DocumentCode :
1764440
Title :
Passively 
-Switched Erbium-Doped Fiber Laser Based on Few-Layer MoS2 Saturable Absorber
Author :
Heping Li ; Handing Xia ; Changyong Lan ; Chun Li ; Xiaoxia Zhang ; Jianfeng Li ; Yong Liu
Author_Institution :
State Key Lab. of Electron. Thin Films & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Volume :
27
Issue :
1
fYear :
2015
fDate :
Jan.1, 1 2015
Firstpage :
69
Lastpage :
72
Abstract :
We demonstrate a passively Q-switched erbium-doped fiber laser (EDFL) based on few-layer MoS2 as a saturable absorber (SA). Few-layer MoS2 is prepared by the chemical vapor deposition method. The prepared MoS2 is transferred onto the end face of a fiber connector to form a fiber-compatible MoS2-based SA. The saturation intensity and modulation depth of the MoS2 SA are measured to be 0.43 MW/cm2 and 33.2%, respectively. The Q-switched EDFL has an all-fiber linear cavity with two fiber Bragg gratings as the end mirrors. By inserting the MoS2 SA into the laser cavity, stable Q-switched operation is achieved at 1.55 μm. The laser has a pump threshold of 20.4 mW, a pulse repetition rate tunable from 10.6 to 173.1 kHz, and a minimum pulse duration of 1.66 μs. Our results show that few-layer MoS2 is a promising SA for Q-switching laser operation.
Keywords :
Bragg gratings; Q-switching; chemical vapour deposition; erbium; fibre lasers; laser cavity resonators; laser mirrors; laser stability; laser tuning; molybdenum compounds; optical fibre couplers; optical modulation; optical pumping; optical saturable absorption; MoS2; Q-switched EDFL; Q-switching laser operation; all-fiber linear cavity; chemical vapor deposition method; end mirrors; few-layer saturable absorber; fiber Bragg gratings; fiber connector end face; frequency 10.6 kHz to 173.1 kHz; laser cavity; modulation depth; passively Q-switched erbium-doped fiber laser; power 20.4 mW; pulse duration; pulse repetition rate; pump threshold; saturation intensity; stable Q-switched operation; time 1.66 mus; wavelength 1.55 mum; Erbium-doped fiber lasers; Laser excitation; Laser mode locking; Optical fiber polarization; Pump lasers; Surface emitting lasers; Fiber lasers; Molybdenum sulfide; Nanomaterials; Q-switching; molybdenum sulfide; nanomaterials;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2014.2361899
Filename :
6918430
Link To Document :
