Results 11 to 20 of about 140,675 (264)

Single longitudinal mode narrow linewidth thulium-doped fiber laser based on an eye-shaped dual-ring filter

Frontiers in Physics, 2023
A single-longitudinal-mode (SLM) thulium-doped fiber laser, based on an eye-shaped passive dual-ring filter, is designed and constructed. The eye-shaped passive compound cavity consisting of four couplers is used to increase the longitudinal mode spacing,
Xiangdong Wang, Fengping Yan, Hao Guo, Wei Wang, Qi Qin, Dandan Yang, Pengfei Wang, Ting Li, Chenhao Yu, Biao Guan, Kazuo Kumamoto, Yuping Suo, Yan Bai   +12 more
doaj   +1 more source

Single-Longitudinal-Mode Laser at 1123 nm Based on a Twisted-Mode Cavity

Crystals, 2021
A single-longitudinal-mode (SLM) Neodymiun-doped Yttrium Aluminium Garnet (Nd:YAG) laser at 1123 nm was first demonstrated with a twisted-mode (TM) cavity. By eliminating the spatial hole burning phenomenon, a stable SLM 1123 nm laser output was obtained.
Yang Liu, Sasa Zhang, Zhenhua Cong, Shaojie Men, Chen Guan, Yongyao Xie, Zhaojun Liu   +6 more
doaj   +1 more source

Study of the Effects of Cavity Mode Spacing on Mode-Hopping in III–V/Si Hybrid Photonic Crystal Lasers

Crystals, 2021
We present a design methodology for hybrid lasers to realise mode-hop free operation by controlling the cavity mode spacing. In this study, a compact hybrid photonic crystal laser (H-PhCL) was employed which allowed a reduction of the Fabry–Perot length ...
Praveen K. J. Singaravelu, Sharon M. Butler, Robert N. Sheehan, Alexandros A. Liles, Stephen P. Hegarty, Liam O’Faolain   +5 more
doaj   +1 more source

A Resonantly Pumped Single-Longitudinal Mode Ho:Sc2SiO5 Laser with Two Fabry–Perot Etalons

Applied Sciences, 2017
We present a single-longitudinal-mode Ho:Sc2SiO5 (Ho:SSO) laser pumped by a Tm:YAP laser for the first time. Two intra-cavity Fabry–Perot etalons were used to realize the single-longitudinal mode of operation.
Xiao-Tao Yang, Long Liu, Peng Zhang, Wen-Qiang Xie   +3 more
doaj   +1 more source

Theoretical analysis of the longitudinal mode behavior due to mode competition in bulk semiconductor lasers

AIP Advances, 2023
The following typical longitudinal mode phenomena occur in bulk semiconductor lasers: single-mode or multimode operation for longitudinal modes, longitudinal mode suppression except for a dominant mode, asymmetry of the spectral profile of longitudinal ...
Toshiaki Mizukami
doaj   +1 more source

Single Longitudinal Mode and Widely Tunable Er:Y₂O₃ Ceramic Laser at ∼ 2.7 μm

IEEE Photonics Journal, 2023
We report on single-longitudinal-mode and tunable operation of an Er:Y2O3 ceramic laser at ∼2.7 μm using intracavity Fabry-Perot etalons combined with a birefringent filter. The laser is pumped with a high brightness, narrow linewidth diode
Manman Ding, Xuanxi Li, Fei Wang, Jun Wang, Deyuan Shen, Dingyuan Tang, Heyuan Zhu   +6 more
doaj   +1 more source

Mode-Hopping-Free Single-Longitudinal-Mode Actively Q-Switched Ring Cavity Fiber Laser With an Injection Seeding Technique

IEEE Photonics Journal, 2017
With a fiber pigtailed electro-optic modulator as the active Q-switch, mode-hopping-free single-longitudinal-mode pulses are generated by a ring cavity fiber laser based on the injection seeding technique.
Wencai Li, Haowei Liu, Ji Zhang, Bo Yao, Sujuan Feng, Li Wei, Qinghe Mao   +6 more
doaj   +1 more source

Single-Longitudinal Mode Ytterbium-Doped Fiber Laser with Ultra-Narrow Linewidth and High OSNR Using a Double-Ring Passive Subcavity

Photonics, 2023
A continuous wave (CW) ultra-narrow linewidth single-longitudinal mode (SLM) ytterbium-doped fiber laser (YDFL) based on narrowband fiber Bragg grating (NB-FBG) and double-ring passive subcavity (DR-PS) was studied.
Han Wen, Yaqi Zhai, Baole Lu, Haowei Chen   +3 more
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Single Longitudinal Mode Optofluidic Microring Laser Based on a Hollow-Core Microstructured Optical Fiber

IEEE Photonics Journal, 2017
A single longitudinal mode microring dye laser based on a simplified hollow-core microstructured optical fiber (SHMOF) is proposed and demonstrated. The dye laser uses a submicron thickness silica microring embedded in the SHMOF as resonator and has the ...
Jie Yu, Yange Liu, Mingming Luo, Zhi Wang, Guang Yang, Hongwei Zhang, Xiaohui Zhang   +6 more
doaj   +1 more source

Single Longitudinal Mode Lasers by Using Artificially Controlled Backscattering Erbium Doped Fibers

IEEE Access, 2021
In this work, we propose and experimentally demonstrate a new distributed short linear cavity fiber laser. At one of the cavity ends, fabricated by a commercial femtosecond fiber laser chirped pulse amplifier, an artificially controlled backscattering ...
Rosa Ana Perez-Herrera, Pablo Roldan-Varona, Luis Rodriguez Cobo, Jose Miguel Lopez-Higuera, Manuel Lopez-Amo   +4 more
doaj   +1 more source