Results 1 to 10 of about 662 (179)

Optical in-memory computing using laser array [PDF]

Light: Science & Applications
A new optical in-memory computing system based on an array of vertical-cavity surface-emitting lasers (VCSELs) has the potential to circumvent the Von Neumann bottleneck.
Omar Alkhazragi
doaj   +2 more sources

Wafer Scale III-Nitride Deep-Ultraviolet Vertical-Cavity Surface-Emitting Lasers Featuring Nanometer-Class Control of Cavity Length. [PDF]

Adv Sci (Weinh)
A DUV‐VCSEL strategy featuring the nanometer‐class control of the cavity length is proposed in the DUV optoelectronic framework based on GaN templates. After the sapphire removal, a self‐terminated etching technology is developed, whereby the cavity length can be accurately determined by epitaxy instead of the fabrication process. As such, a record low
Ji C, Wang J, Xu F, Zhang L, Lang J, Zhang Z, Tan F, Ji C, Zhang J, Zhang E, Kang X, Qin Z, Ju G, Wu J, Yang X, Tang N, Wang X, Ge W, Shen B.   +18 more
europepmc   +2 more sources

Multi-junction cascaded vertical-cavity surface-emitting laser with a high power conversion efficiency of 74% [PDF]

Light: Science & Applications
High electro-optical conversion efficiency is one of the most distinctive features of semiconductor lasers as compared to other types of lasers. Its further increase remains a significant objective.
Yao Xiao, Jun Wang, Heng Liu, Pei Miao, Yudan Gou, Zhicheng Zhang, Guoliang Deng, Shouhuan Zhou   +7 more
doaj   +2 more sources

Emerging Device Applications From Strong Light-Matter Interactions in 2D Materials. [PDF]

Adv Sci (Weinh)
Two‐dimensional semiconductors enable extremely compact optoelectronic devices such as solar cells, sensors, LEDs, and lasers. Their strong light–matter interactions allow efficient light emission, detection, and energy conversion. This review article discusses the recent progress in integrating these materials with optical cavities and nanostructures ...
Archana K J, Shwetabh K, Ali R, Velayutham R, Das K, Mondal A, Kumar P, Anantharaman SB.   +7 more
europepmc   +2 more sources

Antireflective vertical-cavity surface-emitting laser for LiDAR [PDF]

Nature Communications
Multijunction vertical-cavity surface-emitting lasers (VCSELs) have gained popularity in automotive LiDARs, yet achieving a divergence of less than 16° (D86) is difficult for conventional extended cavity designs due to multiple-longitudinal-mode lasing ...
Cheng Zhang, Huijie Li, Dong Liang
doaj   +2 more sources

Simulation of Modal Control of Metal Mode-Filtered Vertical-Cavity Surface-Emitting Laser [PDF]

Sensors
In this study, a novel metal-dielectric film mode filter structure that can flexibly regulate the transverse mode inside vertical-cavity surface-emitting lasers (VCSELs) is proposed.
Jingfei Mu, Yinli Zhou, Chao Chen, Xing Zhang, Jianwei Zhang, Tianjiao Liu, Zhuo Zhang, Yuehui Xu, Gaohui Yuan, Jiye Zhang, Yongqiang Ning, Lijun Wang   +11 more
doaj   +2 more sources

Reducing the Threshold of Organic Polariton Lasers by Active Layer Micropatterning and Lateral Confinement

Small Structures
Vertical‐cavity surface‐emitting lasers (VCSELs) are vital for modern photonics, offering compactness, low thresholds, and ease of integration. Pushing them to wavelength‐scale dimensions, however, introduces fabrication and performance challenges ...
Julia Witt, Jiwoo Oh, Tommaso Marcato, Andreas Mischok, Chih‐Jen Shih, Malte C. Gather   +5 more
doaj   +2 more sources

First vertical-cavity surface-emitting laser made entirely in Poland [PDF]

Bulletin of the Polish Academy of Sciences: Technical Sciences, 2021
The paper presents the first vertical-cavity surface-emitting lasers (VCSELs) designed, grown, processed and evaluated entirely in Poland. The lasers emit at »850 nm, which is the most commonly used wavelength for short-reach (
Marcin Gębski, Patrycja Śpiewak, Walery Kołkowski, Iwona Pasternak, Weronika Głowadzka, Włodzimierz Nakwaski, Robert P. Sarzała, Michał Wasiak, Tomasz Czyszanowski, Włodzimierz Strupiński   +9 more
doaj   +1 more source

Surface-Emitting Lasers with Surface Metastructures

Photonics, 2023
Vertical-cavity surface-emitting lasers (VCSELs) have been widely used in consumer electronics, light detection and ranging, optical interconnects, atomic sensors, and so on. In this paper, a VCSEL with the surface metastructure like one-dimensional high-
Anjin Liu, Jing Zhang, Chenxi Hao, Minglu Wang, Wanhua Zheng   +4 more
doaj   +1 more source

Spin-decoupling of vertical cavity surface-emitting lasers with complete phase modulation using on-chip integrated Jones matrix metasurfaces

Nature Communications, 2022
Here the authors harness the on-chip integration of Jones matrix metasurfaces to demonstrate an ultra-compact approach to access and manipulate the optical spin states of vertical cavity surface-emitting lasers (VCSELs) with previously unattainable phase
Pei-Nan Ni, Pan Fu, Pei-Pei Chen, Chen Xu, Yi-Yang Xie, Patrice Genevet   +5 more
doaj   +1 more source