Results 81 to 90 of about 13,663 (209)

GaN‐Based Red Resonant Cavity Light‐Emitting Diode up to 673 nm

Electronics Letters, Volume 62, Issue 1, January/December 2026.
GaN‐based red resonant‐cavity light‐emitting diodes were successfully fabricated using two dielectric distributed Bragg reflectors as the top and bottom mirrors.The device exhibited a mode wavelength of up to 673 nm, which is the longest emission wavelength reported to date for GaN‐based microcavity devices.
Wei Ou, Xin Hou, Yang Mei, Baoping Zhang, Daisuke Iida, Kazuhiro Ohkawa   +5 more
wiley   +1 more source

VCSEL with multi-transverse cavities with bandwidth beyond 100 GHz

Nanophotonics, 2021
To fulfill the demands of high-speed photonic applications, researchers, and engineers have been working to improve the modulation bandwidth (MBW) of semiconductor lasers.
Heidari Elham, Ahmed Moustafa, Dalir Hamed, Bakry Ahmed, Alshahrie Ahmed, Sorger Volker J.   +5 more
doaj   +1 more source

A Novel Optical Package for ATLAS Pixel Detector [PDF]

, 2001
An optical package of novel design has been developed for the ATLAS pixel detector. The package contains two VCSELs and one PIN diode to transmit and receive optical signals. The design is based on a simple connector-type concept and is made of radiation-
Gan, K. K.
core   +2 more sources

Downconversion Master Slave OCT With a Bidirectional Sweeping Laser

Journal of Biophotonics, Volume 18, Issue 12, December 2025.
ABSTRACT This paper explores the challenges of signal processing when using optical coherence tomography (OCT) imaging instruments driven by asymmetric MHz bidirectional sweeping lasers. A downconversion master–slave (DMS) method is proposed as a viable alternative to the traditional OCT protocol.
A. Martinez Jimenez, R. Cernat, A. Bradu, R. Riha, E. A. Proano Grijalva, B. O. Meyer, T. Ansbaek, K. Yvind, A. Podoleanu   +8 more
wiley   +1 more source

A 56 Gb/s PAM4 VCSEL-Based LiFi Transmission With Two-Stage Injection-Locked Technique

IEEE Photonics Journal, 2017
A 56 Gb/s four-level pulse amplitude modulation (PAM4) light-based WiFi (LiFi) transmission based on a 680-nm/5.4-GHz vertical-cavity surface-emitting laser (VCSEL) with a two-stage injection-locked technique is proposed and demonstrated ...
Hai-Han Lu, Chung-Yi Li, Hwan-Wei Chen, Chun-Ming Ho, Ming-Te Cheng, Zih-Yi Yang, Chang-Kai Lu   +6 more
doaj   +1 more source

Real‐Time Monitoring of 2D TMDC MOCVD: An In Situ Spectroscopic Reflectance Approach

Advanced Materials Interfaces, Volume 12, Issue 22, November 22, 2025.
By processing the high‐temperature reflectance spectra acquired during MOCVD, the dynamic differential reflectance colormap is plotted, where the nucleation, lateral growth, and coalescence of monolayer TMDCs can be clearly distinguished via plateau and valley features.
Songyao Tang, Yibing Wang, Hleb Fiadziushkin, Yingfang Ding, Amir Ghiami, Michael Heuken, Andrei Vescan, Holger Kalisch   +7 more
wiley   +1 more source

Illuminating Quantum Phenomena in 2D Materials: The Power of Optical Spectroscopy

Advanced Optical Materials, Volume 13, Issue 31, November 5, 2025.
Atomically thin 2D materials host quantum tunnelling, plasmonic and excitonic phenomena driven by reduced dimensionality and strong many‐body interactions. This review links these effects to state‐of‐the‐art optical probes—NSOM, pump–probe, CARS, TRR, and optical frequency comb spectroscopy—highlighting how their ultrahigh spatial–temporal resolution ...
Yuhui Zhou, Jiaru Zhang, Guanghui Ren, Bao Yue Zhang, Jian Zhen Ou   +4 more
wiley   +1 more source

A MHz−Level Swept Source by Time Stretching the Shot−Noise Limited Supercontinuum Based on a Mode−Locked Laser and the Application in Optical Coherence Tomography

Laser &Photonics Reviews, Volume 19, Issue 22, November 19, 2025.
This work pioneers a 5.7 MHz all−fiber mode−locked laser−based broadband swept−source OCT system, achieving record−breaking performance: 11.4 µm axial resolution and 119 mm detection range. The system demonstrates exceptional coherence and stability, overcoming traditional trade−off between imaging speed and detection range.
Laiyang Dang, Wenhao Zhu, Shuyuan Zhu, Yujia Li, Yihuan Shi, Qian Li, Feng Li, Dongmei Huang   +7 more
wiley   +1 more source

High-speed PAM4-based Optical SDM Interconnects with Directly Modulated Long-wavelength VCSEL

, 2018
This paper reports the demonstration of high-speed PAM-4 transmission using a 1.5-{\mu}m single-mode vertical cavity surface emitting laser (SM-VCSEL) over multicore fiber with 7 cores over different distances.
Amann, Markus-Christian, Bauwelinck, Johan, Chen, Jiajia, Fu, Songnian, Gan, Lin, Jacobsen, Gunnar, Li, Haolin, Lin, Rui, Liu, Deming, Ozolins, Oskars, Pang, Xiaodan, Popov, Sergei, Schatz, Richard, Spiga, Silvia, Tang, Ming, Tong, Weijun, Torfs, Guy, Udalcovs, Aleksejs, Van Kerrebrouck, Joris, Yin, Xin, Zhang, Lu   +20 more
core   +1 more source

Simultaneous Dual Band Transmission Over Multimode Fiber-Fed Indoor Wireless Network [PDF]

, 2006
Performance measurements of different combinations of digital enhanced cordless telecommunications packet radio service, global system for mobile communications, universal mobile telecommunication service, and 802.11g (54 Mbps) signals in a dual band ...
Batchelor, John C., Das, Anjali, Garcia Zuazola, Ignacio Julio, Gomes, Nathan J., Lethien, Christophe, Nkansah, Anthony, Vilcot, Jean-Pierre, Wake, David   +7 more
core   +1 more source