Results 51 to 60 of about 934 (185)

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

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

Quantum-Well-Embedded InGaN Quantum Dot Vertical-Cavity Surface-Emitting Laser and Its Photoelectric Performance

Photonics
An electrically injected vertical-cavity surface-emitting laser (VCSEL) with quantum-well-embedded InGaN quantum dots (QDs) as the active region was designed.
Zinan Hua, Hailiang Dong, Zhigang Jia, Wei Jia, Lin Shang, Bingshe Xu   +5 more
doaj   +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

VCSEL with intra-cavity circular Bragg gratings for single-mode operation

AIP Advances
In this paper, we present the design and fabrication of a single-mode Vertical-Cavity Surface-Emitting Laser (VCSEL) incorporating circular Bragg gratings (CBGs).
Shanting Hu, Xinchen Zhang, Chengyuan Lee, Bo Tian, Lei Zhu, Xiangjun Xin   +5 more
doaj   +1 more source

Nanomembrane Etching and Release Process for the Realization of Hybrid InP/Si Photonic‐Crystal Surface‐Emitting Lasers Using Micro‐Transfer Printing

physica status solidi (a), Volume 222, Issue 21, November 2025.
In this article, a process for achieving small‐area, high‐bandwidth photonic‐crystal surface‐emitting lasers for optical telecom is presented. InP active material is integrated onto an Si‐photonic crystal using a commercially established micro‐transfer printing technique.
Olof Sjödin, Rutvik Urdhwareshe, Ishwor Koirala, Axel Strömberg, Mattias Hammar   +4 more
wiley   +1 more source

A 5 m/25 Gbps Underwater Wireless Optical Communication System

IEEE Photonics Journal, 2018
A 25-Gbps underwater wireless optical communication (UWOC) system with a two-stage injection-locked 680-nm red-light vertical-cavity surface-emitting laser (VCSEL) transmitter to enhance the frequency response and a laser beam expander to expand the ...
Chung-Yi Li, Hai-Han Lu, Wen-Shing Tsai, Zhen-Han Wang, Chung-Wei Hung, Chung-Wei Su, Yi-Feng Lu   +6 more
doaj   +1 more source

POST: photonic swin transformer for automated and efficient prediction of PCSEL

Nanophotonics, Volume 14, Issue 22, Page 3599-3610, 01 November 2025.
Abstract This work designs a model named POST based on the vision transformer (ViT) approach. Across single, double, and even triple lattices, as well as various non‐circular complex hole structures, POST enables prediction of multiple optical properties of photonic crystal layers in photonic crystal surface emitting lasers (PCSELs) with high speed and
Qi Xin, Hai Huang, Chenyu Li, Kewei Shi, Zhaoyu Zhang   +4 more
wiley   +1 more source

Performance improvement of GaN-based vertical cavity surface emitting laser by employing a hole storage layer and enhancing the carrier transport behavior

Results in Physics
In this paper, the transport behavior of carriers between multiple quantum wells (vertical) and inside a single quantum well (radial) in a GaN-based Vertical Cavity Surface Emitting Laser (VCSEL) is investigated, and a new device structure with a hole ...
Yachen Wang, Feng Liang, Jing Yang, Ping Chen, Zongshun Liu, Changsheng Xia, Degang Zhao   +6 more
doaj   +1 more source

A 50-m/40 Gb/s 680-nm VCSEL-Based FSO Communication

IEEE Photonics Journal, 2016
A 50-m/40-Gb/s 680-nm vertical-cavity surface-emitting laser (VCSEL)-based free-space optical (FSO) communication employing three-stage injection-locked technique and the afocal scheme is proposed and experimentally demonstrated.
Wen-Shing Tsai, Hai-Han Lu, Chung-Yi Li, Ting-Chieh Lu, Chen-Hong Liao, Chien-An Chu, Peng-Chun Peng   +6 more
doaj   +1 more source