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

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2017,（4）
• 页码范围: 52-55
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201715.041403

摘要

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.