Results 41 to 50 of about 144,471 (205)

Purely Gain-Coupled Distributed Feedback Bragg Semiconductor Laser Emitting At 795 Nm With a Wide Tunable Range

IEEE Photonics Journal, 2021
We demonstrate a distributed feedback (DFB) semiconductor laser based on i-line lithography and surface periodic current injection technologies with a lasing wavelength of 795 nm, which corresponds to the D1 spectrum of Rb and has many applications with ...
Chunkao Ruan, Yongyi Chen, Li Qin, Dezheng Ma, Peng Jia, Xia Liu, Lei Liang, Yuxin Lei, Yugang Zeng, Yue Song, Zhijun Zhang, Zaijin Li, Lijun Wang   +12 more
doaj   +1 more source

High channel count and high precision channel spacing multi-wavelength laser array for future PICs [PDF]

, 2014
Multi-wavelength semiconductor laser arrays (MLAs) have wide applications in wavelength multiplexing division (WDM) networks. In spite of their tremendous potential, adoption of the MLA has been hampered by a number of issues, particularly wavelength ...
Chen, Xiangfei, Hou, Lianping, Li, Jingsi, Li, Lianyan, Li, Simin, Marsh, John H., Qiu, Bocang, Shi, Yuechen, Tang, Song, Zhang, Tingting, Zhang, Yunshan, Zheng, Jilin   +11 more
core   +2 more sources

Single-Longitudinal-Mode Dual Wavelength-Switchable Fiber Laser Based on Superposed Fiber Bragg Gratings

IEEE Photonics Journal, 2015
In this work, a simple switchable dual-wavelength short-cavity fiber laser operating in a single-longitudinal-mode regime at room temperature and based on superposed fiber Bragg gratings is proposed and experimentally demonstrated.
R. A. Perez-Herrera, L. Rodriguez-Cobo, M. A. Quintela, J. M Lopez Higuera, M. Lopez-Amo   +4 more
doaj   +1 more source

Stabilisation of single longitudinal mode operation in a Q-switched Nd:YAG laser [PDF]

, 1985
Detection of the reflected laser beam power from the mode-selecting etalon in a prelase-Q-switched laser provides an indicator of mode-frequency drifts.
Arnaud, Berry, D.C. Hanna, Evtuhov, Hanna, Hanna, Hanna, I.D. Carr, K.-H. Wong, Leeb   +9 more
core   +1 more source

Single longitudinal mode operation of a 3 atm pulsed CO2 laser with hybrid method [PDF]

مجله علوم و فنون هسته‌ای, 2019
In this work, the hybrid configuration was used to produce the single longitudinal mode operation of pulsed CO2 laser with 14 cm long active volume at the pressure 3 atm.
S Kazemi Sangsari, S Jelvani, M Mollabashi, M Ilchi, Z Pourhasannezhad, D Ahadpour, K Silakhori   +6 more
doaj   +1 more source

Single-longitudinal-mode condition for DFB lasers

Electronics Letters, 1985
We show theoretically that the loss difference of about 10% is required between the main mode and the side mode for a semiconductor laser to oscillate in single-longitudinal mode. The DFB laser has been found to meet this requirement, and a side-mode suppression of more than 30 dB was observed under high-speed direct modulation.
G. Motosugi, Y. Yoshikuni, T. Ikegami
openaire   +1 more source

990 nm High-Power High-Beam-Quality DFB Laser With Narrow Linewidth Controlled by Gain-Coupled Effect

IEEE Photonics Journal, 2019
High-power single-longitudinal-mode regrowth-free gain-coupled distributed feedback laser diode based on ridge waveguide with periodic current injection is achieved at 990 nm. Our device is fabricated only by standard i-line lithography with micron-scale
Yu-Xin Lei, Yong-Yi Chen, Feng Gao, De-Zheng Ma, Peng Jia, Qiu Cheng, Hao Wu, Chun-Kao Ruan, Lei Liang, Chao Chen, Jun Zhang, Jing-Yu Tian, Li Qin, Yong-Qiang Ning, Li-Jun Wang   +14 more
doaj   +1 more source

Cavity-QED entangled photon source based on two truncated Rabi oscillations [PDF]

, 2006
We discuss a cavity-QED scheme to deterministically generate entangled photons pairs by using a three-level atom successively coupled to two single longitudinal mode high-Q cavities presenting polarization degeneracy.
Akopian, Arimondo, Aspect, Bennett, Bennett, Beveratos, Clauser, Dalibard, Ekert, Ferrari, Foster, Gisin, Jennewein, Jordi Mompart, Kai Eckert, Katori, Kuhn, Legero, Miller, Morigi, Naik, Ramón Corbalán, Rauschenbeutel, Rempe, Rocío García-Maraver, Sauer, Scarani, Shimizu, Stevenson, Takamoto, Tittel, Varcoe, Walther, Ye, Zhou   +34 more
core   +2 more sources

Wavelength-Spacing Switchable Dual-Wavelength Single Longitudinal Mode Thulium-Doped Fiber Laser at 1.9 μm

IEEE Photonics Journal, 2016
We propose and demonstrate a spacing switchable dual-wavelength single longitudinal mode thulium-doped fiber laser at 1.9 μm. The fiber laser employs a ring cavity and a segment of 4-m thulium-doped fiber pumped by a 1563 nm laser. A
Wanzhuo Ma, Tianshu Wang, Yuwei Su, Yan Zhang, Peng Liu, Qingsong Jia, Peng Zhang, Huilin Jiang   +7 more
doaj   +1 more source

Six-Wavelength-Switchable SLM Thulium-Doped Fiber Laser Enabled by Sampled FBGs and 3 × 3 Coupler Based Dual-Ring Compound Cavity Filter

IEEE Photonics Journal, 2022
A switchable and tunable six-wavelength single-longitudinal mode (SLM) thulium-doped fiber laser in the 2050 nm band is proposed and experimentally demonstrated.
Dan Cheng, Fengping Yan, Ting Feng, Luna Zhang, Wenguo Han, Qi Qin, Ting Li, Zhuoya Bai, Dandan Yang, Ying Guo, Wei Wang, Yan Bai   +11 more
doaj   +1 more source