Article
Optics
Cheng-Jing Gao, Zi-Han Guo, Yuan-Zhe Sun, Hai-Feng Zhang
Summary: This study achieves polarization conversion of electromagnetic waves using metamaterials and observes electromagnetically induced transparency in the terahertz frequency range. By adjusting the structure of the metamaterial, control over different polarization waves is achieved, while also displaying characteristics of slow-light effect and high transmission.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Physics, Condensed Matter
Renxia Ning, Dandan Guan, Yazhou Wang, Ningye He
Summary: A multiband tunable electromagnetic-induced transparency (EIT) effect can be obtained in the graphene metamaterials, with different resonance modes in the structure. The study is of great importance for U-band communication technology and switches.
EUROPEAN PHYSICAL JOURNAL B
(2023)
Article
Chemistry, Physical
Jin Zhang, Zhenfei Li, Linda Shao, Fajun Xiao, Weiren Zhu
Summary: The study demonstrates the active modulation of EIT analog by integrating graphene into a microwave metamaterial for the first time, showing that the EIT peak can be dynamically controlled under a relatively low bias voltage applied on graphene. The continuous tuning of the EIT resonance strength is achieved by variably dampening the dark resonator using graphene.
Article
Physics, Multidisciplinary
Cheng-Jing Gao, Han-Qing Dong, Li Zeng, Hai-Feng Zhang
Summary: This study proposes a double-layer metamaterial that can achieve both electromagnetic induced transparency (EIT) and linear polarization conversion (LPC) by adjusting the structural symmetry. Experimental results demonstrate high transmission coefficients, narrow transmission dips, cross-polarization conversion, and slow-light effect in a specific frequency range.
Article
Multidisciplinary Sciences
Changqing Wang, Xuefeng Jiang, William R. Sweeney, Chia Wei Hsu, Yiming Liu, Guangming Zhao, Bo Peng, Mengzhen Zhang, Liang Jiang, A. Douglas Stone, Lan Yang
Summary: The study reveals that a polarization mismatch between two indirectly coupled resonators can lead to polarization-induced transparency (PIT), which is distinct from EIT and exhibits a unidirectional feature, providing additional routes for manipulating light flow in optical resonator systems.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Optics
Shu-Ting Guo, Yu-Hong Zhang, Liu-Le Wu, Ming-Yong Ye, Xiu-Min Lin
Summary: Electromagnetically induced transparency and absorption have applications in atomic systems, including slow-light generation, while coupled-resonator-induced transparency and absorption serve as their optical analogues. Theoretical and experimental studies on CRIT and CRIA in directly coupled whispering-gallery-mode microresonators provide conditions for observing and predicting transitions between them with changes in coupling strength. The experimental demonstration of transitions between CRIT and CRIA using a microsphere coupled to a sausagelike microresonator offers guidelines for observation.
Article
Chemistry, Multidisciplinary
Liang Gao, Chao Feng, Yongfu Li, Xiaohan Chen, Qingpu Wang, Xian Zhao
Summary: This paper investigates a metal-graphene metamaterial device that exhibits a tunable, electromagnetically induced transparency (EIT) spectral response at terahertz frequencies. The device structure, composed of a strip and a ring resonator, induces the EIT effect by serving as the bright and dark mode, respectively. By utilizing the variable conductivity of graphene to dampen the dark resonator, the device can dynamically shift its response frequency over 100 GHz, satisfying the requirement for convenient post-fabrication tunability. The proposed device also exhibits slow-light behavior with a maximum group delay of 1.2 ps. Moreover, the sensing performance is studied, showing a sensitivity of up to 100 GHz/(RIU) and a figure of merit (FOM) value exceeding 4 RIU-1. Therefore, the graphene-based metamaterial provides a new miniaturized platform to facilitate the development of terahertz modulators, sensors, and slow-light applications.
Article
Engineering, Electrical & Electronic
Renxia Ning, Zhiqiang Xiao, Zhenhai Chen, Wei Huang
Summary: This study investigates a multilayer structure of graphene with nesting vanadium dioxide (VO2) that exhibits a dual-tunable electromagnetically induced transparency (EIT) effect. The EIT effect can be tuned based on the chemical potential of graphene and temperature of VO2, and is found to be insensitive to polarization. The results have potential applications in terahertz devices.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Optics
A. H. Gevorgyan
Summary: Theoretical discovery of magnetically induced transparency in a magnetically active helically structured medium allows tuning of frequency and linewidth of the transparency band by changing external magnetic field and absorption.
Article
Nanoscience & Nanotechnology
Cheng-Jing Gao, Yuan-Zhe Sun, Hai-Feng Zhang
Summary: A tunable dual-band linear-to-circular polarization conversion related to electromagnetically induced transparency (EIT) is achieved using graphene metamaterial in the terahertz (THz) regime. The electric and magnetic resonances of x- and y-polarized waves are mutually coupled, resulting in EIT behavior due to destructive interference. The presented metamaterial with subwavelength thickness and high transparency opens new possibilities for applications in beam steering and polarization controls.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Physics, Multidisciplinary
Yuan-Zhe Sun, Cheng-Jing Gao, Jia Qu, Hai-Feng Zhang
Summary: Superior analogs for EIT and EIA have been achieved in metasurfaces, and both polarization manipulations can be realized. The integration of circular-polarization transmission and absorption is achieved by adjusting the states of VO2.
ANNALEN DER PHYSIK
(2022)
Article
Physics, Condensed Matter
Hanqing Dong, Chengjing Gao, Li Zeng, Dan Zhang, Haifeng Zhang
Summary: This study proposes an electromagnetically induced transparency (EIT) metamaterial based on the bright-dark-quasi-dark theory, which achieves the transition from EIT to electromagnetically induced absorption (EIA) by adjusting the coupling distance. By adding nested split-ring resonators (SRRs), substantial absorption enhancement is achieved, and the structure also exhibits polarization-insensitive characteristics. The influences of different structural parameters on absorption performance are further discussed.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Engineering, Electrical & Electronic
Mingming Chen, Zhongyin Xiao, Fei Lv, Zhentao Cui, Qidi Xu
Summary: A simple and multi-layer metamaterial made of graphene is proposed to achieve excellent manipulation of the EIT-like effect. By adjusting the Fermi level of graphene, tunable EIT-like effect can be obtained. In addition, wideband EIT-like effect with high transmission can be achieved by adjusting the geometrical parameters of the metamaterial.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Tingting Lang, Zhenyu Yu, Jinhui Zhang, Zhi Hong, Jianjun Liu, Ping Wang
Summary: This study designs and theoretically analyzes a new type of sensor based on electromagnetically induced transparency metamaterials. The proposed metamaterial sensor consists of a polyimide substrate at the bottom and a periodic aluminum structure on the top. CST STUDIO SUITE is used to determine the transmission spectrum of the metamaterials in the terahertz band. The simulation results show that the sensitivity of the metamaterial sensor reaches 270.4 GHz/RIU. The metamaterial sensor is then fabricated to detect bovine serum albumin with a sensitivity of 15.390 GHz/(mg/mL) and a limit of detection (LOD) of 8.97 μg/mL in the concentration range of 0-10 mg/mL. The proposed sensor has the advantages of incident-angle insensitivity, polarization insensitivity, and small size, making it suitable for various research fields including physics, biology, and chemical sensing.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Physics, Multidisciplinary
Tian Yang, Xiaoming Liu, Ji Zhou
Summary: The paper introduces a unique metamaterial design combining the EIT effect and polarization conversion, achieving nearly perfect cross-polarization conversion and suppressing radiation loss. The importance of symmetry is demonstrated in the phenomenon of polarization conversion and EIT effects disappearing when an identical cut-wire is placed on the other side of the SRR, providing a new way to address the loss problem in MM polarization devices and inspiring new high-performance multifunctional MM designs.
ANNALEN DER PHYSIK
(2021)
Article
Chemistry, Multidisciplinary
Anton Vakulenko, Svetlana Kiriushechkina, Mingsong Wang, Mengyao Li, Dmitry Zhirihin, Xiang Ni, Sriram Guddala, Dmitry Korobkin, Andrea Alu, Alexander B. Khanikaev
Summary: This study introduces a new mechanism for establishing all-dielectric infrared HOTI metasurfaces, showing two types of HOTI states and observing the topological transition and emergence of HOTI states through experiments. The proposed all-dielectric HOTI metasurface offers a new approach to confine the optical field in micro- and nano-scale topological cavities.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Lev E. Zelenkov, Anatoly P. Pushkarev, Maxim A. Gorlach, Andrey L. Rogach, Sergey Makarov, Alexander B. Khanikaev, Alexander S. Berestennikov, Anton Vakulenko, Svetlana Kiriushechkina, Mengyao Li, Yanxiu Li
Summary: The study demonstrates the coupling of halide perovskite nanocrystals with higher-order zero-dimensional states confined to the corners of a topological metasurface. By measuring the photoluminescence spectra of perovskite nanocrystals, researchers reveal a significant enhancement at the frequency of zero-dimensional topological corner states, highlighting the interplay of topological physics and the Purcell effect.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Physics, Applied
Yuma Kawaguchi, Mengyao Li, Kai Chen, Vinod Menon, Andrea Alu, Alexander B. Khanikaev
Summary: This paper proposes an alternative approach to realize nonreciprocal devices based on magneto-optical circular dichroism, relying on the presence of optical absorption. The approach utilizes the phenomenon of spin-Hall effect of light, leading to chiral near field interactions of light with matter in lossy regimes. This method may significantly broaden the possible choice of magneto-optical materials for nonreciprocal devices, enabling operation even in lossy regimes.
APPLIED PHYSICS LETTERS
(2021)
Article
Multidisciplinary Sciences
Kai Chen, Matthew Weiner, Mengyao Li, Xiang Ni, Andrea Alu, Alexander B. Khanikaev
Summary: This study demonstrates the construction of a one-dimensional deterministic aperiodic counterpart with the same spectrum and topological characteristics in higher-dimensional topological systems, and further explores the possibility of extended topological classification in lower dimensions.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Materials Science, Multidisciplinary
Yuma Kawaguchi, Andrea Alu, Alexander B. Khanikaev
Summary: In this paper, the operation of a nonreciprocal non-Hermitian system composed of a lossy magneto-optical ring resonator coupled to another ring resonator with gain and loss is explored. It is demonstrated that such a system can exhibit non-reciprocity-based broken parity-time (PT) symmetry and supports one-way exceptional points. The response of the system strongly depends on the regime of operation, which can be leveraged for optical isolator or one-way laser functionality by adjusting loss/gain.
OPTICAL MATERIALS EXPRESS
(2022)
Review
Optics
Hannah Price, Yidong Chong, Alexander Khanikaev, Henning Schomerus, Lukas J. Maczewsky, Mark Kremer, Matthias Heinrich, Alexander Szameit, Oded Zilberberg, Yihao Yang, Baile Zhang, Andrea Alu, Ronny Thomale, Iacopo Carusotto, Philippe St-Jean, Alberto Amo, Avik Dutt, Luqi Yuan, Shanhui Fan, Xuefan Yin, Chao Peng, Tomoki Ozawa, Andrea Blanco-Redondo
Summary: Topological photonics controls the behavior of light through the design of photonic structures, with potential applications in photonics devices. This roadmap surveys emerging areas of research within this field, with a focus on addressing fundamental scientific questions and presenting exciting opportunities for future research and developments.
JOURNAL OF PHYSICS-PHOTONICS
(2022)
Editorial Material
Chemistry, Physical
Alexander B. Khanikaev
Summary: The use of a temporal modulation protocol enables the realization of a bimorphic Floquet system where Chern and anomalous Floquet phases coexist on a single platform of laser-written waveguides.
Article
Optics
Daniel A. Bobylev, Dmitry Tikhonenko, Dmitry Zhirihin, Maxim Mazanov, Anton Vakulenko, Daria A. Smirnova, Alexander B. Khanikaev, Maxim A. Gorlach
Summary: The rapid development of topological concepts in photonics has revealed exotic phenomena such as unidirectional electromagnetic wave propagation and disorder-immune localization of light. Higher-order topological insulators (HOTIs) provide additional degrees of control over light confinement and steering. However, current designs of photonic HOTIs only exploit fixed lattice geometries, limiting their tunability. This article introduces a new mechanism for engineering topological edge and corner states using both electric and magnetic responses of meta-atoms. The alignment of these responses allows for the reconfiguration and tailoring of photonic band topology. Experimental demonstrations in microwave domains and numerical predictions further highlight the potential of this approach in inducing and controlling higher-order topological phases and states.
LASER & PHOTONICS REVIEWS
(2023)
Article
Multidisciplinary Sciences
Matthew Weiner, Xiang Ni, Andrea Alu, Alexander B. Khanikaev
Summary: This study experimentally demonstrates the control of sound waves through material design in two types of acoustic systems. One method involves the excitation of transverse angular momentum in evanescent sound waves in perforated films, while the other method involves the excitation of synthetic transverse pseudo-spin through the lattice symmetries of an acoustic kagome lattice. These results offer new design approaches for acoustic devices.
NATURE COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Svetlana Kiriushechkina, Anton Vakulenko, Daria Smirnova, Sriram Guddala, Yuma Kawaguchi, Filipp Komissarenko, Monica Allen, Jeffery Allen, Alexander B. Khanikaev
Summary: Photonic Dirac metasurfaces with smooth trapping potentials guide optical modes endowed with pseudo-spin. Such potentials give rise to different radiative properties of modes of opposite pseudo-spin. The spin-dependent field distributions and radiative lifetimes of their guided modes indicate that photonic Dirac metasurfaces could be used for spin-multiplexing, controlling the characteristics of optical guided modes, and tuning light-matter interactions with photonic pseudo-spins.
NATURE NANOTECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Kai Chen, Filipp Komissarenko, Daria Smirnova, Anton Vakulenko, Svetlana Kiriushechkina, Irina Volkovskaya, Sriram Guddala, Vinod Menon, Andrea Alu, Alexander B. Khanikaev
Summary: Photonics has emerged as a strong platform for emulating relativistic phenomena. In this study, we demonstrate the realization of relativistic-like trapping in a photonic system, with the formation of photonic modes that possess unique characteristics similar to atomic orbitals. These modes exhibit features such as pseudo-particle-Hall symmetry, spin degeneracy, and topological charge, and can be selectively excited by pseudo-spin-polarized boundary states. This research not only enhances our understanding of the structure of these pseudo-relativistic orbitals, but also opens up new possibilities for designing nanophotonic devices and topological light sources compatible with integrated photonics platforms.
Article
Multidisciplinary Sciences
Anton Vakulenko, Svetlana Kiriushechkina, Daria Smirnova, Sriram Guddala, Filipp Komissarenko, Andrea Alu, Monica Allen, Jeffery Allen, Alexander B. Khanikaev
Summary: Topological photonic interfaces with slowly varying synthetic gauge fields improve the guiding features of topological metasurfaces and their boundary modes, leading to improved bandgap crossing and longer propagation distances.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Applied
Daniel A. Bobylev, Dmitry I. Tikhonenko, Alexander B. Khanikaev, Maxim A. Gorlach, Dmitry V. Zhirihin
Summary: Topological states in a simple square lattice can be tailored by the orientation of non-centrosymmetric split-ring resonators, offering a new design strategy for disorder-robust localization of electromagnetic waves at the edges and corners of photonic structures. Numerical predictions are confirmed experimentally by observing the emergence of nontrivial topological properties and localized edge and corner states.
APPLIED PHYSICS LETTERS
(2023)
Proceedings Paper
Engineering, Aerospace
Kamil B. Alici
Summary: Imaging satellite performance parameters, such as modulation transfer function (MTF), can be measured and analyzed using simulated images. The validity of MTF extraction algorithms was confirmed by comparing theoretical input with actual results. Factors such as slanted edge angle, TDI steps, pixel pitch size, restoration level, ROI selection, dark noise, and oversampling number were found to have varying degrees of impact on MTF curves.
2023 10TH INTERNATIONAL CONFERENCE ON RECENT ADVANCES IN AIR AND SPACE TECHNOLOGIES, RAST
(2023)
Article
Materials Science, Multidisciplinary
Kai Chen, Alexander B. Khanikaev
Summary: We propose a non-Hermitian topological system protected by the generalized rotational symmetry, which hosts two pairs of in-gap edge modes and is characterized by a non-Hermitian Chern number. This finding opens up possibilities for non-Hermitian topological systems with large values of topological invariants and multiple in-gap edge states.
Article
Optics
Hang Dong, Zhixin Sun, Jingyi Li, Yahui Li, Wei Zhang, Guangyong Jin
Summary: This paper calculates thermal stresses and adsorption forces to determine laser cleaning conditions and establishes relevant models. Experimental results show that the removal effect is better with increasing nanosecond pulse delay, with the best effect achieved at 600 milliseconds pulse delay. Based on the findings, the mechanisms of oxide film removal involve thermal stress against adsorption and plasma shock wave breaking the oxide layer.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Junjie Zhang, Wenjun Li, Bingtao Li, Zheng-Da Hu, Jicheng Wang, Feng Zhang, Lei Wang
Summary: A multilayer thin film device structure based on Tamm plasmons is proposed for high-performance near-infrared hot electron photodetectors. By optimizing the device structure parameters, high responsivity detection can be achieved.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hong Huang, Zhiguang Han
Summary: This paper proposes a new ghost imaging reconstruction method using ordered orthogonal Hadamard derived speckle as the illumination speckle series, and introduces the alternating direction multiplier method to improve the imaging performance. The evaluation results show that the method can achieve high-quality reconstructed images under low sampling conditions.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Moritsugu Sakamoto, Yuki Ono, Kohei Noda, Tomoyuki Sasaki, Nobuhiro Kawatsuki, Masayuki Tanaka, Hiroshi Ono
Summary: The effect of wavelength and polarization of illuminating light in polarization imaging for birefringent objects placed behind a scattering structure was experimentally investigated. The result shows that the spatial distribution of the birefringent object was more clearly visualized in the longer wavelength combined with circularly polarized light illumination. This finding indicates the potential of using polarization imaging with circularly polarized light illumination in the near-infrared range for visualizing birefringent objects with scattering.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Peihui Du, Hongfang Wang, Pengwei Li, Rukeyemuhan Abadula, Hmbat Batelbek, Min Gao
Summary: In this study, we theoretically demonstrate the strong coupling between Tamm plasmons and exciton polaritons in metal Al/DBR-molecular structures, extending the operating wavelength to the deep ultraviolet region. The coupling strength can be effectively manipulated by adjusting the structure parameters, offering potential benefits for the development of new-style optical filters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Priyanka Chaudhary, Akhilesh Kumar Mishra
Summary: We design and numerically investigate the switching dynamics between two outer waveguides in a parity-time (PT)-symmetric adiabatically coupled three waveguides nonlinear directional coupler (NLDC) system. The study shows that the device can provide switching even when the middle waveguide is nonlinear and the outer waveguides are linear. Furthermore, the effect of loss to gain ratio on critical switching power and the impact of launched light power and gain (loss) value on transmitted power are also studied.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Wei Feng, Yongcong Yi, Shuyang Li, Zhi Xiong, Boya Xie, Zhen Zeng
Summary: Traditional imaging techniques are ineffective in achieving clear underwater imaging due to the presence of scattering media. Single-pixel imaging (SPI) system based on Unet++ offers a solution for reconstructing high-quality images in highly turbid water environments.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiaorui Qu, Jufeng Zhao, Haijun Tian, Junjie Zhu, Guangmang Cui
Summary: This paper studies the structural similarity between RGB and spectral images and proposes a non-iterative Images Structure Similarity (ISS) method for fast reconstruction of spectral images. Additionally, the input of the Deep Image Prior (DIP) method is optimized for the first time by using the initial spectral data reconstructed by ISS, leading to an improved starting value for the iteration. The experimental results show that the proposed method can enhance the reconstruction quality in both spectral and spatial resolutions, while significantly reducing the reconstruction time compared to other DIP-based methods.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Donghe Sheng, Zhe Han, Zanyang Qiao, Tianpei Dong, Chenxi Wang, Huiping Tian
Summary: In this study, a distributed multi-parameter sensor based on an etched few-mode multi-core fiber is proposed, allowing simultaneous sensing of temperature, strain, and sample refractive index. By combining space division multiplexing and stimulated Brillouin scattering, the sensor achieves high sensitivity in detecting these parameters.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Dehao Chen, Zhenwu Mo, Zehong Liang, Junjie Jiang, Huilin Tang, Yidan Sun, Ziyu Wang, Quanfeng Wei, Yanru Chen, Dongmei Deng
Summary: In this study, a novel family of elliptical Airyprime vortex beams (EAPVBs) is introduced, which inherits the excellent self-focusing properties of the circular Airyprime vortex beam (CAPVB). The asymmetric focusing of EAPVB leads to some novel properties, such as the splitting of high-order optical vortex and the formation of two foci. By taking advantage of these properties, EAPVB is constructed as a tunable optical bottle for particle capture.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Xiao Ma, Qiongchan Shao, Jian-Jun He
Summary: In this study, an SHS chip based on Su8 waveguide was designed and fabricated. By physically adjusting the metal electrodes and compensating for transmissivity fluctuations, the generation of side ripples was successfully suppressed.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Hongbin Zhang, Jiansen Du, Zongtao Chi, Hailin Cong, Bin Wang
Summary: In this paper, a novel type of dual-wavelength confocal metalens is proposed to solve the spatial crosstalk between two wavelengths. The metalens can greatly reduce the spatial crosstalk and achieve high precision and efficiency in confocal imaging. It can also focus light in specific wavelength ranges, making it suitable for imaging, microscopy, and optical fiber communication.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Rui Qiu, Guanmao Zhang, Shaokai Du, Jie Liu, Hongyu Jib, Kaiyun Bi, Bochuan Xing, Guangchao Diao
Summary: Recent research has developed an achromatic metalens that shows potential for replacing traditional lenses. This study focuses on a continuously variable focus height broadband achromatic metalens for long-wavelength infrared applications. By optimizing materials and parameters, chromatic aberration is effectively corrected, making it suitable for high-resolution LWIR imaging and spectroscopy systems.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Marcos Troncoso-Costas, Gaurav Jain, Yiming Li, Mohammed Patel, Lakshmi Narayanan Venkatasubramani, Sean O'Duill, Frank Smyth, Andrew Ellis, Francisco Diaz-Otero, Colm Browning, Liam Barry
Summary: In this work, a fast-switching tuneable laser capable of wide wavelength coverage, low noise and linewidth levels suitable for high-order modulation formats is demonstrated. The laser is characterized to cover a wavelength range of 35 nm in the C-band with nanosecond switching time. It is used to successfully demonstrate 480 Gbit/s 16QAM transmission over 25 km of single-mode fiber for a wavelength range of 19 nm.
OPTICS COMMUNICATIONS
(2024)
Article
Optics
Takeshi Moriyasu, Masahiko Tani, Hideaki Kitahara, Takashi Furuya, Jessica Afalla, Toshiro Kohmoto, Daishiro Koide, Hiroki Sato, Mitsutaka Kumakura
Summary: Optical pump-terahertz probe spectroscopy was used to study the photocarrier dynamics and optical characteristics of semiconductor Si. The results showed that the thickness of Si influenced the transmitted terahertz field amplitude and peak delay time, indicating differences in photocarrier dynamics between different Si materials.
OPTICS COMMUNICATIONS
(2024)
