Results 51 to 60 of about 6,513 (222)

Ultrahigh Detectivity Colloidal Quantum dot Avalanche Photodetectors Driven by Electron Mobility of the n‐Type Layer

Advanced Electronic Materials, Volume 12, Issue 19, 12 October 2026.
Herein, electron mobility of the n‐type layer is demonstrated to be a key parameter governing detection performance in CQD‐APDs through a comparative study of ZnO nanoparticles (NPs) and ZnO sol–gel (S‐G). The incorporation of ZnO NPs with high electron mobility facilitates efficient extraction of photogenerated electrons, thereby achieving improved ...
Changjo Kim, Byeongsu Kim
wiley   +1 more source

Source misalignment in multimode polymer tapered waveguides for optical backplanes [PDF]

, 2007
Polymer tapered multimode waveguides were modeled using the finite difference wide-angle beam propagation method to investigate whether tapered input waveguide couplers decreasing in width away from the waveguide entrance give improved tolerance to ...
Rashed, AM, Selviah, DR
core  

Speed enhancement in VCSELs employing grating mirrors [PDF]

, 2013
In recent years, various approaches to improve the speed of directly modulated vertical-cavity surface-emitting lasers (VCSELs) have been reported and demonstrated good improvement.
Il-Sug Chung, Jesper Mørk, M??rk, Jesper, Mørk, Jesper, Chung, Il-Sug   +4 more
core   +1 more source

Investigations on polarization dynamics of birefringent spin-VCSELs

, 2021
Vertical-cavity surface-emitting lasers (VCSELs) are widely used in optical data communication mainly in data centers for short-haul transmissions. However, their intensity modulation resonance frequency does not exceed 40 GHz which also limits the ...
Debernardi P, Lindemann M, Hoti P, Gerhardt NC, Jung N, Hashib MF, Michalzik R, Pusch T, Hofmann MR   +8 more
core   +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

Integrated Sensing and Communication in a Fiber‐Wireless System With Time‐Phase Synthesis Dimension Waveform

Nanophotonics, Volume 15, Issue 17, 11 September 2026.
A unified fiber‐wireless integrated sensing and communication system is enabled by a single microwave photonic platform with a time‐phase synthesis dimension waveform. This architecture simultaneously delivers high‐speed data transmission, high‐precision wireless ranging, and accurate fiber diagnostics over a high‐power analog radio‐over‐fiber link ...
Shengkun Chen, Zhenglin Tang, Weiqiang Lyu, Mengke Wang, Yaowen Zhang, Zhen Zeng, Lingjie Zhang, Heping Li, Zhiyao Zhang, Yong Liu   +9 more
wiley   +1 more source

High Contrast Grating VCSELs: Properties and Implementation on InP-based VCSELs [PDF]

, 2011
Vertical cavity surface emitting lasers (VCSELs) have become of large commercial importance over the last two decades. They have become the dominant low cost, low power coherent sources in many applications such as optical sensing and short distance data
Chase, Christopher
core  

Multimode vertical-cavity surface-emitting lasers under spin injection [PDF]

APL Photonics
Recent research revealed that single-mode vertical-cavity surface-emitting lasers under spin injection (spin-VCSELs) have the potential to revolutionize laser technology for short-haul optical communications. While previous studies have focused solely on
Uliana Diiankova, Mariusz Drong, Tobias Pusch, Rainer Michalzik, Markus Lindemann, Nils C. Gerhardt, Martin R. Hofmann   +6 more
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, Volume 38, Issue 51, 11 September 2026.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +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