Article
Physics, Multidisciplinary
Piotr Garbaczewski, Vladimir A. Stephanovich, Grzegorz Engel
Summary: This paper proposes a method for calculating electronic spectra in ordered and disordered semiconductor structures and discusses the relationship between the electron spectrum and the shape of the QW in such structures. This is significant for high-end electronics, flexible electronics, spintronics, optoelectronics, and energy harvesting applications.
NEW JOURNAL OF PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
John A. Gil-Corrales, Alvaro L. Morales, Carlos A. Duque
Summary: In this study, the physics of a GaAs quantum well with AlGaAs barriers was characterized and analyzed based on an interior doped layer. Using the self-consistent method, the probability density, energy spectrum, and electronic density were analyzed by solving the Schrodinger, Poisson, and charge-neutrality equations. The system's response to geometric changes in well width and non-geometric changes in the doped layer's position, width, and donor density were reviewed. The finite difference method was used to solve all second-order differential equations. Finally, the optical absorption coefficient and electromagnetically induced transparency between the first three confined states were calculated using the obtained wave functions and energies, showing the potential for tunability through system geometry and doped-layer characteristics.
Article
Physics, Condensed Matter
Olga Tikhonova, Andrey N. Vasil'ev
Summary: We have developed a fully quantum theoretical approach to describe the dynamics of Frenkel excitons and bi-excitons induced by few-photon quantum light in nanostructures of finite size. We have observed Rabi-like oscillations and enhanced excitation of high-lying free exciton states in resonance with dressed polariton eigenstates. This discovery of Rabi-shifted resonances is a new and important feature that significantly impacts the understanding of exciton formation and has implications for the development of nanoelectronics and quantum information protocols.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Computer Science, Information Systems
Zhongliang Qiao, Xiang Li, Jia Xubrian Sia, Wanjun Wang, Hong Wang, Lin Li, Zaijin Li, Zhibin Zhao, Yi Qu, Xin Gao, Baoxue Bo, Chongyang Liu
Summary: A monolithic two-section InGaAs/GaAs double quantum wells mode-locked laser emitting at 1.06 mu m demonstrates stable mode locking operation up to 80 degrees C, with a fundamental repetition rate of 9.51 GHz and a signal-to-noise ratio of more than 55 dB. The fourth harmonic at 38.04 GHz is also observed. Characteristic temperature (T-0) and the impact of absorber bias voltage on T-0 have been systematically studied, revealing a two-segment feature for T-0 and slight effects from absorber bias voltage on photon saturation.
Article
Engineering, Electrical & Electronic
Hojjatollah Khajeh Salehani
Summary: In this theoretical study, the optical properties of two-dimensional coupled concentric double quantum rings with a parabolic confinement potential were investigated. The researchers calculated the optical absorption coefficient for the transition from the ground state to the first excited state. They examined the effects of inter-ring coupling, internal or external ring width variation, and on-center donor and acceptor impurities. The results showed that the absorption coefficient peak value decreased with a decrease in the width of the internal ring, while it first increased and then decreased with a decrease in the width of the external ring.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
Zhongliang Qiao, Xiang Li, Jia XuBrian Sia, WanJun Wang, Hong Wang, Lin Li, Zaijin Li, Zhibin Zhao, Guojun Liu, Hao Chen, Yi Qu, Xin Gao, Baoxue Bo, Chongyang Liu
Summary: This study utilizes double quantum wells passively mode locked lasers to achieve subpicosecond pulse generation, finding that operational parameters have significant effects on the mode-locking characteristics of the laser, especially temperature causing an increase in pulse width. This has important implications for improving the performance of the laser.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Kaiyuan Yao, Mary S. Collins, Kara M. Nell, Edward S. Barnard, Nicholas J. Borys, Tevye Kuykendall, J. Nathan Hohman, P. James Schuck
Summary: This study examines the strongly excitonic optical properties of 2D semiconductors, specifically focusing on silver selenide monolayers. The research demonstrates the potential of utilizing multiquantum-well structures for enhancing light matter interactions and constructing optoelectronic and quantum excitonic devices. The efficient blue photoluminescence and ultrafast exciton radiative dynamics of the material highlight its promising characteristics for various applications.
Article
Optics
Yi Tian Thung, Rui Duan, Emek G. Durmusoglu, Yichen He, Lian Xiao, Calvin Xiu Xian Lee, Wen Siang Lew, Lin Zhang, Hilmi Volkan Demir, Handong Sun
Summary: Colloidal quantum wells (CQWs) are a promising gain material for optical feedback due to their unique excitonic features from 1D confinement, but current integration methods result in low laser quality. To address this, a liquid-interface kinetically driven self-assembly method is proposed to coat ultrathin CQWs onto silica microsphere cavities, achieving high-quality microlasers with a Q-factor of 13,000 at room temperature. Stable single-mode lasing output is demonstrated through evanescent field coupling in a 2D-3D microcavity configuration, highlighting the potential for future miniaturized colloidal optoelectronic and photonic applications.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Thomas F. K. Weatherley, Wei Liu, Vitaly Osokin, Duncan T. L. Alexander, Robert A. Taylor, Jean-Francois Carlin, Raphael Butte, Nicolas Grandjean
Summary: This study demonstrates the successful spatial resolution and analysis of nonradiative point defects in InGaN/GaN quantum wells using high-resolution cathodoluminescence. The different types of point defects were identified by contrasting behaviors and their densities were measured from 10^14 cm^-3 to as high as 10^16 cm^-3. The results show the interplay between point defects and carrier dynamics, highlighting the impact of point defects on carrier diffusion lengths and nonradiative behaviors.
Article
Chemistry, Multidisciplinary
Ting Lin, Si-Si Gu, Yong-Qiang Xu, Shun-Li Jiang, Shu-Kun Ye, Bao-Chuan Wang, Hai-Ou Li, Guang-Can Guo, Chang-Ling Zou, Xuedong Hu, Gang Cao, Guo-Ping Guo
Summary: We have successfully fabricated and characterized a hybrid quantum device composed of five gate-defined double quantum dots and a high impedance NbTiN transmission resonator. By measuring the microwave transmission through the resonator in the detuning parameter space, we have spectroscopically explored the controllable interactions between the double quantum dots and the resonator. Taking advantage of the high tunability of the system parameters and the high cooperativity (Ctotal > 17.6) interaction between the qubit ensemble and the resonator, we have tuned the charge-photon coupling and observed the transition of the collective microwave response from linear to nonlinear. Our results demonstrate the largest number of double quantum dots coupled to a resonator and provide a potential platform for scaling up qubits and studying collective quantum effects in semiconductor-superconductor hybrid cavity quantum electrodynamics systems.
Article
Chemistry, Multidisciplinary
Thomas Kanne, Dags Olsteins, Mikelis Marnauza, Alexandros Vekris, Juan Carlos Estrada Saldana, Sara Loric, Rasmus D. Schlosser, Daniel Ross, Szabolcs Csonka, Kasper Grove-Rasmussen, Jesper Nygard
Summary: The core platform of several recent quantum device proposals relies on parallel 1D semiconductor channels connected by a superconducting strip, utilizing Andreev processes or topological effects. A strategy for synthesizing double InAs nanowires using III-V molecular beam epitaxy is presented, allowing for the deposition of a superconducting layer onto nanowires without breaking the vacuum in order to ensure pristine interfaces between the superconductor and the semiconductor nanowires. The method demonstrates the utility of high yield merged or separate parallel nanowires with full or half-shell superconductor coatings in complex quantum devices through electron transport measurements.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Joudi Maskoun, Negar Gheshlaghi, Furkan Isik, Savas Delikanli, Onur Erdem, Emine Yegan Erdem, Hilmi Volkan Demir
Summary: This study presents a ultralow-threshold microfluidic single-mode laser using CdSe/CdS@CdxZn1-xS core/crown@gradient-alloyed shell colloidal semiconductor quantum wells (CQWs) dispersed in toluene as the microfluidic gain medium, achieving in-solution lasing with record-low thresholds. The high-quality Fabry-Perot cavity formed by SiO2 protected Ag mirrors contributes to the low thresholds, along with the core/crown@gradient-alloyed shell CQWs having giant gain cross-section and slow Auger rates. This microfabricated CQW laser serves as a compact and inexpensive coherent light source for microfluidics and integrated optics in the visible spectral region.
ADVANCED MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
V. Ya Aleshkin, A. Germanenko, G. M. Minkov, A. A. Sherstobitov
Summary: The study on polarizability of electrons in CdTe/CdxHg1-xTe/CdTe quantum wells reveals that without cadmium, the polarizability is negative. This negative polarizability can decrease the dielectric constant of the quantum wells by up to 15% and result in the blue shift of the interband light absorption edge under an electric field.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Nanoscience & Nanotechnology
Guangren Na, Yawen Li, Xiaoyu Wang, Yuhao Fu, Lijun Zhang
Summary: Quantum confinement effect drastically alters the electronic and optical properties of optoelectronic materials. In this study, the controllable morphology evolution of InAs nanostructures was demonstrated by tuning the growth conditions. Tapered InAs nanostructures exhibit weaker quantum confinement effect and smaller bandgap compared to uniform nanomaterials, indicating the potential of morphology engineering for modulating the electronic and optoelectronic properties of nanomaterials.
Article
Chemistry, Multidisciplinary
Esin Kasapoglu, Melike Behiye Yucel, Carlos A. Duque
Summary: In this study, we investigated the optical properties of electrons in symmetrical and asymmetrical double quantum wells under an applied magnetic field. The calculations were carried out using the effective mass and parabolic band approximations. By diagonalization, we obtained the eigenvalues and eigenfunctions of the confined electron. The linear and third-order non-linear optical absorption and refractive index coefficients were calculated using a two-level density matrix expansion. The proposed potential model is valuable for simulating and controlling the optical and electronic properties of double quantum heterostructures subjected to externally applied magnetic fields.
Article
Chemistry, Multidisciplinary
Rafael G. Toscano-Negrette, Jose C. Leon-Gonzalez, Juan A. Vinasco, A. L. Morales, Fatih Koc, Ahmet Emre Kavruk, Mehmet Sahin, M. E. Mora-Ramos, Jose Sierra-Ortega, J. C. Martinez-Orozco, R. L. Restrepo, C. A. Duque
Summary: A theoretical analysis of optical properties in a ZnS/CdS/ZnS core/shell/shell spherical quantum dot was conducted, considering variations of internal dot radius, the application of electric and magnetic fields, as well as the presence of on-center donor impurity. It was found that the transition energy decreases with the growth of internal radius and the increase of external magnetic field, leading to red-shift of resonant peaks. Conversely, the application of electric field resulted in a blue-shift of resonances but a decrease in the amplitude of optical responses. The activation of impurity effects caused a decrease in energy values, particularly impacting the ground state and resulting in an increase in transition energies.
Article
Physics, Condensed Matter
D. A. Pshenay-Severin, R. B. Adamov, M. Ya Vinnichenko, M. D. Moldavskaya, V. A. Shalygin
Summary: The temperature evolution of the high-resolution far-infrared transmission spectra of a 6H-SiC single crystal slab was experimentally investigated in the temperature range of 5-320 K. The temperature dependence of the phonon lifetimes for the long-lived phonons, specifically the IR active folded transverse acoustic (FTA) phonon doublet, was determined. It was found that three-phonon anharmonic processes dominate the FTA phonon decay at temperatures above 160 K, leading to a rapid decrease in phonon lifetimes with increasing temperature. The contribution of four-phonon anharmonic processes was negligibly small at temperatures below 320 K.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Esin Kasapoglu, Melike Behiye Yucel, Carlos A. Duque
Summary: In this study, the electronic and optical properties of an electron in symmetric and asymmetric double quantum wells with a harmonic potential and an internal Gaussian barrier under a nonresonant intense laser field were investigated. The electronic structure was obtained using the two-dimensional diagonalization method. The combination of the standard density matrix formalism and the perturbation expansion method was used to calculate the linear and nonlinear absorption, and refractive index coefficients. The obtained results demonstrate the possibility of adjusting the electronic and optical properties of the considered double quantum wells through parameter alterations and the application of a nonresonant intense laser field.
Article
Chemistry, Multidisciplinary
Jose C. Leon-Gonzalez, Rafael G. Toscano-Negrette, A. L. Morales, J. A. Vinasco, M. B. Yucel, H. Sari, E. Kasapoglu, S. Sakiroglu, M. E. Mora-Ramos, R. L. Restrepo, C. A. Duque
Summary: In this study, the effects of spin-orbit interaction and Zeeman splitting on the electronic properties of an electron in GaAs single quantum rings are investigated using effective mass theory. The energies and wavefunctions are determined by solving the Schrodinger equation. The study considers an inversely quadratic model potential for electron confinement and analyzes the influence of applied electric and magnetic fields. Results show that both spin-orbit interaction and Zeeman splitting reduce the absorption intensity for the considered transitions and have non-monotonic effects on the resonant peaks with external magnetic fields.
Article
Chemistry, Multidisciplinary
John A. Gil-Corrales, Alvaro L. Morales, Carlos A. Duque
Summary: In this study, the physics of a GaAs quantum well with AlGaAs barriers was characterized and analyzed based on an interior doped layer. Using the self-consistent method, the probability density, energy spectrum, and electronic density were analyzed by solving the Schrodinger, Poisson, and charge-neutrality equations. The system's response to geometric changes in well width and non-geometric changes in the doped layer's position, width, and donor density were reviewed. The finite difference method was used to solve all second-order differential equations. Finally, the optical absorption coefficient and electromagnetically induced transparency between the first three confined states were calculated using the obtained wave functions and energies, showing the potential for tunability through system geometry and doped-layer characteristics.
Article
Chemistry, Multidisciplinary
Christian Heyn, Leonardo Ranasinghe, Ahmed Alshaikh, Carlos A. Duque
Summary: This study investigates the optical emission of cone-shell quantum structures (CSQS) under vertical electric and magnetic fields using simulations. The unique shape of CSQS undergoes a transformation from a disk into a quantum-ring with a tunable radius under an electric field. The influence of an additional magnetic field is also examined.
Article
Chemistry, Multidisciplinary
Esin Kasapoglu, Melike Behiye Yucel, Carlos A. Duque
Summary: In this study, we investigated the optical properties of electrons in symmetrical and asymmetrical double quantum wells under an applied magnetic field. The calculations were carried out using the effective mass and parabolic band approximations. By diagonalization, we obtained the eigenvalues and eigenfunctions of the confined electron. The linear and third-order non-linear optical absorption and refractive index coefficients were calculated using a two-level density matrix expansion. The proposed potential model is valuable for simulating and controlling the optical and electronic properties of double quantum heterostructures subjected to externally applied magnetic fields.
Article
Chemistry, Multidisciplinary
Christian Heyn, Leonardo Ranasinghe, Kristian Deneke, Ahmed Alshaikh, Carlos A. Duque, Wolfgang Hansen
Summary: Strain-free GaAs cone-shell quantum structures (CSQS) with highly tunable wave functions (WF) were fabricated using local droplet etching (LDE) during molecular beam epitaxy (MBE). An electric field was applied to tune the WF in the CSQS, resulting in a highly asymmetric exciton Stark shift. The unique shape of the CSQS allows for a large charge-carrier separation and a strong Stark shift.
Article
Physics, Condensed Matter
Hernan A. Gomez-Urrea, Jose G. Cardona, Miguel E. Mora-Ramos, Carlos A. Duque
Summary: In this theoretical study, we investigate the light propagation properties in two-dimensional square photonic crystals (PCs) made of copper oxide high-temperature superconductors (HTSCs), following the Bravais-Moire (BM) patterns. The BM PCs are composed of cylindrical cores formed from a combination of two square Bravais lattices, with a commensurable rotation between them. The dielectric function of the superconducting material is modeled using the two-fluid Gorter-Casimir theory. We present the corresponding gap, the mapping of dielectric core radius, and the dispersion relations of TM modes for both BM PCs and the waveguide system created from defect lines within the crystal. BM PCs made of copper oxide HTSCs offer a high tunability in terms of temperature.
Article
Physics, Condensed Matter
Jose C. Leon-Gonzalez, Rafael G. Toscano-Negrette, Juan A. Vinasco, Alvaro L. Morales, Miguel E. Mora-Ramos, Carlos A. Duque
Summary: We investigated the effects of a non-resonant intense laser, structural defects, and magnetic fields on the electronic and optical properties of a simple GaAs quantum ring. The presence of a laser field and a structural defect disrupted the axial symmetry of the system, leading to changes in the excited states and linear absorption coefficients. The behavior of the absorption peaks also varied with the magnetic field, depending on the presence of a structural defect and the type of polarization.
Article
Physics, Condensed Matter
Waira Murillo-Garcia, Hernan A. Gomez-Urrea, Miguel E. Mora-Ramos, Carlos A. Duque
Summary: This study presents the transmission spectra and electric field amplitudes of electromagnetic modes in hybrid periodic/quasiperiodic multilayer photonic structures in one dimension. By optimizing the parameters, narrowband filters are obtained.
Article
Physics, Condensed Matter
Rafael G. Toscano-Negrette, Jose C. Leon-Gonzalez, Juan A. Vinasco, Judith Helena Ojeda Silva, Alvaro L. Morales, Carlos A. Duque
Summary: This article presents a study on using a particular diphenyl-ether molecule as a functional device. The electrical and thermal properties of the molecule, including electric current, electrical and thermal conductance, Seebeck coefficient, and figure of merit, are investigated in both strong and weak coupling regimes, with consideration of different structural configurations and variations with temperature. The results could be valuable for laboratory applications and verification.
Article
Physics, Condensed Matter
Miguel E. Mora-Ramos, Juan A. Vinasco, A. Radu, Ricardo L. Restrepo, Alvaro L. Morales, Mehmet Sahin, Omar Mommadi, Jose Sierra-Ortega, Gene Elizabeth Escorcia-Salas, Carlos A. Duque
Summary: We investigated the electronic properties of a semiconductor quantum ring with an elliptical shape and non-uniform height, considering the effects of spin-orbit interactions and magnetic field. The results show that these factors have an impact on the allowed electron states and the linear optical absorption response.
Article
Physics, Condensed Matter
Rafael G. Toscano-Negrette, Jose C. Leon-Gonzalez, Juan A. Vinasco, Alvaro L. Morales, Miguel E. Mora-Ramos, Carlos A. Duque
Summary: A theoretical analysis was conducted to examine the electronic and optical properties of a confined electron and a hole in a type-II core-shell spherical quantum dot composed of CdSe/ZnTe and ZnTe/CdSe. The Schrodinger equation for the electron and the hole was numerically solved, and the effects of variations in inner radius and electric and magnetic fields were investigated. The results showed that the magnetic field caused a blue shift in absorption peaks, while the electric field decreased the overlap of electron and hole wavefunctions, resulting in a decrease in the amplitude of absorption peaks.
Article
Physics, Condensed Matter
Benita Turijan-Clara, Julian D. Correa, Miguel E. Mora-Ramos, Carlos A. Duque
Summary: Recently, it has been found that the heterostructure of blue phosphorene nanoribbons and P3HT polymer chains exhibits a type-II band alignment. This finding is important for understanding and improving the efficiency of novel solar cells.
Article
Materials Science, Multidisciplinary
Yanbin Wang, Xinyou Huang, Ziqiu Cheng, Penghui Chen, Yuyang Chen, Junhao Ye, Haohong Chen, Zhenzhen Zhou, Denis Yu Kosyanov, Jiang Li
Summary: Uniform Al2O3-Ce:LuAG composite phosphor ceramics (CPCs) with excellent luminescent properties and thermal stability have been successfully synthesized in this study, showing great potential for application in solid-state laser lighting.
Article
Materials Science, Multidisciplinary
Syed Muhammad Ali Zaidi, Mazhar Ali Kalyar, Zulfiqar Ali Raza, Aayesha Shoukat, Rubaila Waseem, Muhammad Aslam
Summary: Polyvinyl alcohol (PVA) nanocomposite strips embedded with graphene nanosheets and copper-ferrite nanoparticles were synthesized using solution casting technique. Laser pulse irradiations were then applied to modify the structural, optical, and electrical properties of the strips, showing potential for optoelectronic devices.
Article
Materials Science, Multidisciplinary
Yunru Chen, Jialing Wu, Jiajia Wang, Shihui Ma, Hongwei Yu
Summary: This paper investigates the angular non-critical phase-matching second-harmonic-generation properties of Ba3(ZnB5O10)PO4 crystal and explores its potential applications in the output spectral regions.
Article
Materials Science, Multidisciplinary
Qun Jing, Menglin Zhu, Lu Li, Xu Ji, Haiming Duan, Henglei Chen, Ming-Hsien Lee
Summary: The paper introduces two new nonlinear optical materials, MZnPO4 (M = Rb, Cs), synthesized by cation substitution. These materials exhibit a honeycomb-like structure and show mild SHG responses with short absorption edges. The thermal properties, IR spectra, and theoretical calculations of the materials are also discussed.
Article
Materials Science, Multidisciplinary
Camila Ianhez-Pereira, Akhil Kuriakose, Ariano De Giovanni Rodrigues, Ana Luiza Costa Silva, Ottavia Jedrkiewicz, Monica Bollani, Marcio Peron Franco de Godoy
Summary: This study aims to evaluate the crystalline changes induced by ultrafast laser micromachining on manganese oxide thin films using micro-Raman spectroscopy. The results show that laser-writing is effective in locally modifying low-crystallinity films and increasing crystallite sizes, highlighting an interesting approach to evaluate laser-induced structural modifications on metal oxide thin films.
Article
Materials Science, Multidisciplinary
Kamal Bansal, Neeraj Kumar Mishra, Ibrahim Abdullahi, Param Jeet Singh, Mohit Tyagi, Sukhpal Singh
Summary: A novel Sm3+ activated oxyfluoride glass was synthesized and its structure and properties were analyzed. The glass showed potential applications in lasers, optical temperature sensing, and high-energy scintillators.
Article
Materials Science, Multidisciplinary
Xingjian Wang, Zhixu Wu, Jiawei Zhu, Yubin Kang, Mengqiang Cai, Yong Xia, Hui Deng
Summary: Antimony sulfide (Sb2S3) has been investigated as a promising material for visible light photodetectors due to its non-toxicity, stability, and high absorption coefficient. In this study, we systematically explored the impact of key parameters on the performance of Sb2S3 devices using simulation and successfully fabricated self-powered photodetectors with high responsivity and specific detectivity. Furthermore, we demonstrated the application of the Sb2S3 detector in a scanning imaging system, showcasing its potential for developing new types of visible light detectors and imaging systems.
Article
Materials Science, Multidisciplinary
O. I. Sallam, R. M. Ahmed
Summary: The 20NaF-60P2O5-20Na2O fluorophosphate glass systems doped with 3 wt% of CoO and NiO were investigated for their optical parameters before and after gamma irradiation. The presence of defects within the glass network and the addition of transition metals were found to affect the properties of the composites. After irradiation, a red shift was observed in the dissipation factor spectrum. The energy lost at the surface of the composites was larger than the energy lost within the constituent materials. All investigated composites showed insulating behavior and exhibited increased nonlinear optical parameters after irradiation, with the CoO-doped composite showing the highest values.
Article
Materials Science, Multidisciplinary
Fahimeh Ahmadi, Zeinab Ebrahimpour, Asghar Asgari, Bao Van
Summary: In this study, Er3+-doped sulfophosphate glasses containing titanium nanoparticles (TiO2 NPs) and different concentrations of silver nanoparticles (AgNPs) were synthesized. The impact of AgNPs on the physical and structural characteristics, optical absorption and emission features, and photocatalytic activity of the glasses were investigated. The results showed that the addition of AgNPs enhanced the emission intensity of the glasses, with the system containing 0.04 mol% of AgNPs exhibiting optimal performance. Furthermore, the presence of AgNPs and TiO2 NPs in the glass matrix positively affected the photocatalytic performance.
Article
Materials Science, Multidisciplinary
Zhuang Li, Rongfei Huang, Wei Yuan, Shaoqiang Zheng, Wenlu Liao, Huiying Xu, Zhiping Cai
Summary: This study reports the first realization of an 868 nm Pr:YLF laser pumped by an InGaN blue laser diode. The laser achieved a maximum power of 641 mW with stable output and good beam quality. The experimental results were in agreement with theoretical simulations.
Article
Materials Science, Multidisciplinary
Bhishma Karki, Youssef Trabelsi, Amrindra Pal, Sofyan A. Taya, Ram Bharos Yadav
Summary: This study proposes an SF11 Prism- Ag- ZnO nanowires-CeO2-Sensing layer-based surface plasmon resonance sensor for measuring dopamine concentration in human blood. The sensor demonstrates high sensitivity and detection accuracy, and holds significant importance for early diagnosis of neurological diseases.
Article
Materials Science, Multidisciplinary
M. Taoufiq, A. Soussi, A. Elfanaoui, A. Ait Hssi, S. Baoubih, A. Ihlal, K. Bouabid
Summary: In this study, the effect of copper doping within ZnS on glass substrates was investigated through experimental and theoretical approaches. Pure ZnS and Cu-doped ZnS films with varying copper concentrations were deposited on glass substrates using the SILAR technique. The structural, morphological, and optical properties of the films were characterized, and the theoretical FP-LAPW method based on density functional theory was employed to study the properties of copper-doped ZnS.
