Results 41 to 50 of about 807 (182)

Wideband Polarization-Resolved Chaos With Time-Delay Signature Suppression in VCSELs Subject to Dual Chaotic Optical Injections

IEEE Access, 2018
Both the polarization-resolved chaotic bandwidth enhancement and time-delay signature suppression have been numerically investigated based on a slave vertical-cavity surface-emitting laser (S-VCSEL) driven by dual chaotic optical injections (DCOIs) from ...
Jian-Jun Chen, Ying-Ni Duan, Lin-Fu Li, Zhu-Qiang Zhong   +3 more
doaj   +1 more source

Progress in Short Wavelength Energy-Efficient High-Speed Vertical-Cavity Surface-Emitting Lasers for Data Communication

Photonics, 2023
The current progress of energy-efficient high-speed VCSELs based on GaAs substrates is presented. Novel approaches for the design of VCSELs are presented, potentially leading to larger bandwidth bit rates and lower power consumption.
Si-Cong Tian, Mansoor Ahamed, Dieter Bimberg   +2 more
doaj   +1 more source

Predicting cochlear structural alterations from auditory function in age‐related hearing loss mice based on optical coherence tomography

Journal of Intelligent Medicine, EarlyView.
Abstract With global population aging, age‐related hearing loss has become a major public health concern. Understanding the relationship between auditory functional decline and cochlear structural degeneration is essential for early detection and precise intervention.
Shu Zheng, Zhiqi Li, Junyue Wang, Guangjian Ni   +3 more
wiley   +1 more source

1 W Single‐Mode Large‐Area Edge‐Emitting Laser via Non‐Hermitian Spatial Mode Filtering

Laser &Photonics Reviews, EarlyView.
We demonstrate a non‐Hermitian spatial mode filtering approach for achieving high‐power single‐mode operation in large‐area edge‐emitting laser diodes. By symmetrically coupling passive filter arrays to the main lasing waveguide, higher‐order transverse modes are effectively suppressed while preserving the fundamental mode.
Ece Karabey, Babak Olyaeefar, Mohammadmahdi Alizadeh, Ramy El‐Ganainy, Abdullah Demir   +4 more
wiley   +1 more source

Polarization bistability of vertical-cavity surface-emitting lasers under Larmor precession of electron spins

APL Photonics
Polarization bistability of vertical-cavity surface-emitting lasers (VCSELs) is the situation in which two orthogonal linear polarization states can selectively and stably exist for a single operation condition (e.g., injected current and temperature ...
Nobuhide Yokota, Kazuhiro Ikeda, Satoshi Iba, Takeo Katayama, Hiroshi Yasaka   +4 more
doaj   +1 more source

Impact of Ge Substrate Thicknesses and Epitaxy Growth Conditions on the Optical and Material Properties of Ge- and GaAs-Based VCSELs

IEEE Photonics Journal
A comparative study is presented on the dependence of optical and material properties of VCSELs on Ge and GaAs substrate thicknesses as well as epitaxy process conditions.
Wenhan Dong, Zeyu Wan, Yun-Cheng Yang, Chao-Hsin Wu, Yiwen Zhang, Rui-Tao Wen, Guangrui Xia   +6 more
doaj   +1 more source

Small-Signal Analysis of High-Performance VCSELs

IEEE Photonics Journal, 2019
In this paper, a comprehensive model to describe the small-signal modulation response of ultra-high performance single- and multi-mode vertical-cavity surface-emitting lasers (VCSELs), with modulation bandwidths exceeding 30 GHz, is presented ...
Wissam Hamad, Marwan Bou Sanayeh, Tobias Siepelmeyer, Hassan Hamad, Werner H. E. Hofmann   +4 more
doaj   +1 more source

Annealing effects of 850 nm vertical-cavity surface-emitting lasers after proton irradiation

Heliyon, 2022
A long-term annealing experiment was performed using 850 nm vertical-cavity surface-emitting lasers (VCSELs) irradiated with 10 MeV protons. Static parameters such as the threshold current, slope efficiency, and light output power were tested using ...
Jiawei Chen, Yudong Li, Heini Maliya, Qi Guo, Dong Zhou, Lin Wen   +5 more
doaj   +1 more source

Sub‐Ensemble Isolation in SERF Magnetometry Enabled by Micrometer‐Scale Polarization Control

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
Inter‐channel crosstalk caused by atomic diffusion fundamentally limits the spatial resolution of single‐cell multi‐channel SERF magnetometers. In this work, a spatial‐variant polarization metasurface is employed to achieve effective sub‐ensemble isolation within a single SERF atomic ensemble, which enables the suppression of inter‐channel crosstalk ...
Yuhao Zhang, Zihua Liang, Lu Liu, Jinsheng Hu, Peng Zhou, Gen Hu, Gaopu Hou, Mao Ye   +7 more
wiley   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, Volume 11, Issue 13, 8 July 2026.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source