Results 61 to 70 of about 2,658 (232)

Fourier Ptychography-Based Measurement of Beam Divergence Angle for Vertical Cavity Surface-Emitting Laser

Photonics, 2023
The Vertical Cavity Surface-Emitting Laser (VCSEL) has led to the rapid development of advanced fields such as communication, optical sensing, smart cars, and more. The accurate testing of VCSEL beam quality is an important prerequisite for its effective
Leilei Jia, Xin Qian, Lingyu Ai
doaj   +1 more source

Viscoelasticity‐Induced Controllable Periodic Meso‐Textures of Liquid Crystal Polymers in Additive Manufacturing

Advanced Functional Materials, Volume 36, Issue 32, 20 April 2026.
Viscoelasticity‐driven instabilities are harnessed to create tunable, periodic textures in 3D‐printed liquid crystalline polymers. This study illustrates how processing parameters control these spontaneous meso‐scale patterns. These unique structural architectures unlock new possibilities for functional devices, ranging from photonic components to ...
Miaomiao Zou, Jiongyi Yan, Dick F. Firdaus, Amy Jin, Jiaxuan Li, Shushan Wang, Ran Chen, Xudong Tao, Zehao Ji, Yi Liu, Zichen Wang, Christos Margadji, Mark Kotter, J. Axel Zeitler, George G. Malliaras, Ronan Daly, Andrew Gleadall, Sebastian W. Pattinson   +17 more
wiley   +1 more source

High-Performance Zn-Diffusion 850-nm Vertical-Cavity Surface-Emitting Lasers With Strained InAlGaAs Multiple Quantum Wells

IEEE Photonics Journal, 2010
We demonstrate a high-performance Zn-diffusion 850-nm vertical-cavity surface-emitting laser (VCSEL). By the use of strained InAlGaAs/AlGaAs multiple quantum wells for the active region, our structure can have a much higher maximum output power, higher ...
J.-W. Shi, W.-C. Weng, F.-M. Kuo, Ying-Jay Yang, S. Pinches, M. Geen, A. Joel   +6 more
doaj   +1 more source

Optical Coherence Tomography for High‐Precision Industrial Inspection in Industry 4.0: Advances, Challenges, and Future Trends

Laser &Photonics Reviews, Volume 20, Issue 8, 17 April 2026.
This review examines how optical coherence tomography transforms industrial inspection by delivering real‐time, micrometer‐resolution, depth‐resolved imaging. It surveys applications across display manufacturing, thin films, microelectronics, laser processing, and coatings, evaluates performance against conventional techniques, and highlights emerging ...
Nipun Shantha Kahatapitiya, Sm Abu Saleah, Daewoon Seong, Naresh Kumar Ravichandran, Sangyeob Han, Ruchire Eranga Wijesinghe, Mansik Jeon, Jeehyun Kim   +7 more
wiley   +1 more source

Gain Measurements on Vertical Cavity Surface Emitting Laser Material Using Segmented Contact Technique [PDF]

, 2021
We report direct measurements of the optical gain profile for a vertical cavity surface emitting laser (VCSEL) epitaxial structure, by characterising the transverse electric (TE) in-plane net modal gain using the segmented contact ...
Gillgrass, Sara-Jayne, J. Iwan Davies, Samuel Shutts, Zhibo Li, Davies, J. Iwan, Allford, Craig P., Shutts, Samuel, Li, Zhibo, Craig P. Allford, Curtis Hentschel, Peter M. Smowton, Hentschel, Curtis, David G. Hayes, Baker, Jack, Smowton, Peter M., Wyn Meredith, Forrest, Richard, Nabialek, Josie, Josie Nabialek, Sara-Jayne Gillgrass, Richard Forrest, Meredith, Wyn, Jack Baker, Hayes, David G.   +23 more
core   +1 more source

Next‐Generation Wearable Optical Sensors for Personalized Health and Point‐of‐Care Diagnostics—A Systematic Review

Advanced Healthcare Materials, Volume 15, Issue 10, 13 March 2026.
This review article presents a comprehensive and integrated overview of wearable optical sensors, systematically bridging advanced functional materials with fundamental optical sensing mechanisms. It further highlights their diverse applications across healthcare, fitness monitoring, environmental surveillance, and food safety.
Rituparna Duarah, Helena Torné‐Morató, Guolong Zhang, Youssef Amin, Mahdieh Pabast, Nidhi Sharma, Sailing He, Manash R. Das, Pier Paolo Pompa   +8 more
wiley   +1 more source

Comparaison de la diaphonie présentée par deux technologies d'intégration de barrettes de VCSEL [PDF]

, 2006
Nous présentons les résultats de simulations et caractérisations de diodes lasers VCSEL (Vertical Cavity Surface Emitting Laser) montées en barrettes selon 2 technologies distinctes: l'une de type microruban développée par Avalon Photonics, et l'autre de
Rissons, Angélique, Mollier, Jean-Claude   +1 more
core  

Utilization of 1-GHz VCSEL for 11.1-Gbps OFDM VLC Wireless Communication

IEEE Photonics Journal, 2016
In this paper, we propose using an energy-efficient and low-cost 682-nm vertical-cavity surface-emitting laser (VCSEL) with 1-GHz modulation bandwidth for high-speed wireless visible light communication (VLC).
I-Cheng Lu, Chien-Hung Yeh, Dar-Zu Hsu, Chi-Wai Chow   +3 more
doaj   +1 more source

Experimental demonstration of 1.3 μm VCSEL‐based optoelectronic oscillator at 12 GHz using optical injection‐locking technique

IET Optoelectronics, 2021
The experimental validation is presented of an optical injection‐locked (OIL) vertical‐cavity surface‐emitting laser (VCSEL)‐based optoelectronic oscillator (VBO) to overcome the direct‐modulation bandwidth limitations of packaged VCSELs.
Juan Coronel, Margarita Varón, Angélique Rissons, Chaouki Kasmi   +3 more
doaj   +1 more source

Emerging Device Applications From Strong Light–Matter Interactions in 2D Materials

Advanced Science, Volume 13, Issue 17, 23 March 2026.
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 ...
Janani Archana K, Kumar Shwetabh, Reyas Ali, Ramji Velayutham, Koustav Das, Abhishek Mondal, Prashant Kumar, Surendra B. Anantharaman   +7 more
wiley   +1 more source