Article
Materials Science, Multidisciplinary
Atiqah Nabieha Azmi, Wan Maryam Wan Ahmad Kamil, Haslan Abu Hassan, Wan Zakiah Wan Ismail, Otto L. Muskens
Summary: A novel method of doping Aluminum (Al) into zinc oxide (ZnO) nanorods by a simple chemical dip process is evaluated in terms of its performance in random lasing. The ZnO nanorods were synthesized using chemical bath deposition (CBD) method at 96 degrees C for 3 h. The nanorods were then dipped in a fixed doping solution concentration, and the dip time was varied between 0 s and 80 s. Doping ZnO nanorods in aluminum nitrate nonahydrate solution for 40 s contributes to random lasing with the lowest threshold value of 12.48 mJ/cm2 and a spectral width of 2.12 nm.
Article
Physics, Applied
Hanh Hong Mai, Quang Khai Dao, Minh Nguyet Nguyen, Hong Minh Pham
Summary: A high-performance random laser based on kombucha bacterial cellulose and ZnO bionanocomposite foam is described in this work. The random laser has a low threshold and high flexibility, making it promising for applications in optical, biological, and medical fields.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Optics
Arindam Dey, Ashim Pramanik, Subrata Biswas, Udit Chatterjee, Pathik Kumbhakar
Summary: A simple and low-cost approach for producing tunable and low threshold random lasing emission in the visible region is demonstrated using a fluorescent laser dye as gain medium and light scattering in silica nanospheres. By varying the size of the scatterer particles and the pump light wavelength, both incoherent and coherent random lasing emission can be achieved. The developed random lasing system shows tunable emission and low threshold, making it promising for applications in laser imaging, Raman sensing, and other optoelectronic devices.
JOURNAL OF LUMINESCENCE
(2022)
Article
Physics, Applied
D. V. Lebedev, A. M. Mintairov, A. S. Vlasov, M. M. Kulagina, Yu. A. Guseva, S. I. Troshkov, G. Juska, E. Pelucchi, A. Gocalinska
Summary: This study describes the growth, material characterization, and lasing of InP/GaInP quantum dot microdisks. Two types of InP/GaInP quantum dots with different heights and emission decay lifetimes were observed. The findings also show that lasing occurs via the excited states of a specific type of quantum dots, which is important for technological microlasing applications.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Nurizati Rosli, Mohd Mahadi Halim, Md Roslan Hashim, Wan Maryam Wan Ahmad Kamil, Gia-Yuan Zhuang, Si-Yuan Chan, Hsu-Cheng Hsu
Summary: By tuning the concentration of the chemical bath solution, a transition from ZnO nanowalls to nanoflakes was achieved. The changes in particle size and crystallite size of the nanostructures affect the threshold and emission wavelength of random lasing. Ultimately, the nanoflakes structure showed the lowest threshold for random lasing, making it the best structure for ZnO random lasers.
RESULTS IN PHYSICS
(2021)
Article
Optics
S. F. Haddawi, N. Roostaei, S. M. Hamidi
Summary: This study demonstrates a flexible random laser based on a two-face double grating plasmonic structure made of PDMS. The experimental results confirm that thinner double grating structures can achieve higher efficiency in random lasing properties under certain conditions.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Electrochemistry
Masaya Ichimura, Yuzuki Tomita
Summary: Thin films of Co3O4 were fabricated using electrochemical deposition, showing a p-type photo response. Pn heterostructures were then formed with ZnO, exhibiting clear rectification properties.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Dan Liu, Xianxin Wu, Can Gao, Chenguang Li, Yingshuang Zheng, Yang Li, Ziyi Xie, Deyang Ji, Xinfeng Liu, Xiaotao Zhang, Liqiang Li, Qian Peng, Wenping Hu, Huanli Dong
Summary: This research presents an organic semiconductor material LD-2 with high charge-carrier mobility and low-threshold lasing characteristics, as well as a high-quality factor. Theoretical calculations and experimental data analysis indicate that the superior optoelectronic properties of LD-2 crystal are attributed to the large intermolecular transfer integral and fast radiative transition rate.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Optics
Lukasz Ryglowski, Konrad Cyprych, Jaroslaw Mysliwiec
Summary: This article presents a straightforward procedure to differentiate between amplified spontaneous emission (ASE) and random lasing, in order to determine their respective properties and performance simultaneously.
OPTICS COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Do Quang Trung, Manh-Trung Tran, Nguyen Duy Hung, Quang Nguyen Van, Nguyen Thi Huyen, Nguyen Tu, Huy Pham Thanh
Summary: A new emission-tunable Mn-doped ZnS/ZnO heterostructure nanobelts were successfully synthesized with controllable light emission properties. By adjusting the oxidation temperature, the nanobelts exhibit white light emission characteristics similar to commercial phosphors. By incorporating these nanobelts into UV-pumped WLED fabrication, a prototype with good luminous efficiency was achieved.
Article
Engineering, Electrical & Electronic
Gandhi Kallarasan Periyanayagam, Kazuhiko Shimomura
Summary: This study explores the deposition of GaInAsP crystalline layer structures on a directly bonded InP/Si substrate using conventional metal-organic vapor-phase epitaxy (MOVPE) growth technology, for the fabrication of a laser diode device. It was found that increasing the p-cladding layer thickness significantly improved the laser performance, while increasing the n-cladding layer thickness dramatically decreased the power in the silicon substrate. Numerical analysis was conducted to calculate the confinement factor and threshold current density (J(th)) of the n-cladding layer. The results were compared with a standard InP laser diode substrate.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Optics
R. Gayathri, K. Monika, V. M. Murukeshan, C. Vijayan
Summary: Plasmonic random lasers are of significant interest in optics and photonics due to their improved performance, but absorption losses and fluorescence quenching are major setbacks. One-dimensional anisotropic plasmonic structures can help overcome these limitations by manipulating the spectral overlap, enabling the realization of low-threshold random lasing systems.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Optics
Hao Zhou, Min Liu
Summary: This study reported the nonlinear combination effect of multi-photon absorption and exciton-exciton collision induced random lasing emission from zinc oxide (ZnO) under femtosecond laser excitation. Strong random lasing signals with peaks centered at 407, 412, and 417nm were observed when excited at 800nm wavelength pulses. The threshold of the random lasing peak is approximately 0.9mJ/cm(2). Unlike the conventional three-photon excited random lasing phenomena centered at 390nm, the violet discrete lasing modes ranging from 407nm to 417nm may occur due to excitonic stimulation. The red-shift of the lasing mode signals may be attributed to exciton-exciton interaction enhanced electron-hole plasma emission.
JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Len van Deurzen, Ryan Page, Vladimir Protasenko, Kazuki Nomoto, Huili (Grace) Xing, Debdeep Jena
Summary: This study demonstrates the existence of multimode lasing at sub-300 nm wavelengths through optical pumping in AlGaN heterostructures. The fabricated AlGaN lasers exhibit promising performance at room temperature.
Article
Electrochemistry
Hao Wang, Enyi Hu, Faze Wang, Bin Zhu
Summary: Energy band alignment has been proposed as a method to design promising electrolyte materials for low temperature ceramic fuel cells, leading to enhanced ion conduction and avoidance of short-circuit issues.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
