Chinese Optics Letters, 2017, 15 (4): 041403, Published Online: Jul. 25, 2018   

Mode-locked thulium-doped fiber laser based on 0.3 nm diameter single-walled carbon nanotubes at 1.95  μm

Author Affiliations
1 Shenzhen Key Laboratory of Laser Engineering, Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
2 Institute of Applied Physics and Materials Engineering, University of Macau, Macau, China
Abstract
Employing 0.3 nm diameter single-walled carbon nanotubes (SWCNTs) as saturable absorbers, we demonstrate a passively mode-locked fiber laser operating at 1950 nm. The 0.3 nm diameter SWCNTs are prepared by pyrolyzing dipropylamine in the channels of zeolite crystals MgAPO-11 (AEL). The laser pumped by a 1550 nm laser source produces 972 fs pulses with a spectral width at half-maximum of 4.2 nm and a repetition rate of 21.05 MHz, an average output power of 2.3 mW corresponding to the maximum pump power of 420 mW with a 10% output coupler.

Yanping Chen, Jianpang Zhai, Xintong Xu, Ling Li, Jinzhang Wang, Min Zhang, Shuangchen Ruan, Zikang Tang. Mode-locked thulium-doped fiber laser based on 0.3 nm diameter single-walled carbon nanotubes at 1.95  μm[J]. Chinese Optics Letters, 2017, 15(4): 041403.

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