Results 1 to 10 of about 30,451 (313)

Demonstration of a violet-distributed feedback laser with fairly small temperature dependence in current-light characteristics [PDF]

Applied Physics Express
We have developed a GaN-based distributed feedback laser diode (DFB-LD) with the detuning of +5 nm to obtain a smaller temperature dependence of the threshold current. We found that the current-light characteristics almost overlapped up to 300 mW between
Toshihiko Fukamachi, Junichi Nishinaka, Koichi Naniwae, Shuichi Usuda, Haruki Fukai, Akihiko Sugitani, Masahiro Uemukai, Tomoyuki Tanikawa, Ryuji Katayama   +8 more
doaj   +2 more sources

Two-Segment Gain-Coupled Distributed Feedback Laser

IEEE Photonics Journal, 2018
A two-segment regrowth-free gain-coupled distributed feedback (DFB) laser monolithically integrated different gain contrast segments was proposed, realizing both wavelength-tunable (5 nm) and wavelength stabilization characteristics, controlled by a ...
Feng Gao, Li Qin, Yong-Yi Chen, Peng Jia, Chao Chen, Hong Chen, Lei Liang, Yu-Gang Zeng, Xing Zhang, Yong-Qiang Ning, Ye-Jin Zhang, Li-Jun Wang   +11 more
doaj   +2 more sources

Design for Distributed Feedback Laser Biosensors Based on the Active Grating Model [PDF]

Sensors, 2019
The distributed feedback (DFB) laser is widely used in sensing because of its portable size, simple fabrication and high sensitivity. Most theoretical design models are based on passive Bragg gratings.
Bowen Wang, Yi Zhou, Zhihe Guo, Xiang Wu
doaj   +2 more sources

Tunable Erbium-Doped Fiber Laser Based on Random Distributed Feedback [PDF]

IEEE Photonics Journal, 2014
A tunable erbium-doped fiber (EDF) laser based on random distributed feedback through backward Rayleigh scattering in a 20-km-long single-mode fiber and a tunable fiber Fabry-Perot interferometer filter is demonstrated.
Lulu Wang, Xinyong Dong, Perry Ping Shum, Haibin Su   +3 more
doaj   +2 more sources

Low-threshold distributed feedback laser based on holographic polymer dispersed liquid crystals through the oriented organic semiconductor films. [PDF]

Sci Rep
Liu L, Liu M, Wang Q, Hu H, Zhang F, Kong X.   +5 more
europepmc   +3 more sources

Ultra-high spectral purity laser derived from weak external distributed perturbation

Opto-Electronic Advances, 2023
Ultra-high spectral purity lasers are of considerable research interests in numerous fields such as coherent optical communication, microwave photonics, distributed optical fiber sensing, gravitational wave detection, optical clock, and so on. Herein, to
Laiyang Dang, Ligang Huang, Leilei Shi, Fuhui Li, Guolu Yin, Lei Gao, Tianyi Lan, Yujia Li, Lidan Jiang, Tao Zhu   +9 more
doaj   +1 more source

Extreme Narrowing of the Distributed Feedback Fiber Laser Linewidth Due to the Rayleigh Backscattering in a Single-Mode Fiber: Model and Experimental Test

Photonics, 2022
We present our theoretical model and experimental results on the extreme linewidth narrowing of an erbium-doped fiber distributed feedback (DFB) laser due to an additional random DFB via Rayleigh backscattering in a long single-mode fiber connected to ...
Mikhail I. Skvortsov, Sofia R. Abdullina, Evgeny V. Podivilov, Alexander A. Vlasov, Danil R. Kharasov, Edgard A. Fomiryakov, Sergey P. Nikitin, Vladimir N. Treshchikov, Sergey A. Babin   +8 more
doaj   +1 more source

Interferometric Optical Pumping of an InGaN/GaN-Based Gain-Coupled Distributed Feedback Multi Quantum Well Laser

Crystals, 2023
We describe an all-optical method to achieve—prior to further advanced processing steps—a perfect match of the relevant wavelength-sensitive parameters of an InGaN/GaN semiconductor distributed feedback laser.
Daniel Hofstetter, Hans Beck, David P. Bour   +2 more
doaj   +1 more source

Low-Threshold Microlasers Based on Holographic Dual-Gratings

Nanomaterials, 2021
Among the efforts to improve the performances of microlasers, optimization of the gain properties and cavity parameters of these lasers has attracted significant attention recently.
Tianrui Zhai, Liang Han, Xiaojie Ma, Xiaolei Wang   +3 more
doaj   +1 more source

Green Perovskite Distributed Feedback Lasers [PDF]

Scientific Reports, 2017
AbstractA visible perovskite distributed feedback laser is fabricated for the first time. Through the use of nanocrystal pinning, highly luminescent methylammonium lead bromide films are used to produce stable lasers emitting at 550 nm, with a low threshold of 6 µJcm−2.
J. R. Harwell, G. L. Whitworth, G. A. Turnbull, I. D. W. Samuel   +3 more
openaire   +4 more sources