W-type normal dispersion thulium-doped fiber-based high-energy all-fiber femtosecond laser at 1.7 μm

被引：25

作者：

Chen, Shaoxiang ^{[1
]}

Chen, Yuhao ^{[1
]}

Liu, Kun ^{[1
]}

Sidharthan, Raghuraman ^{[1
]}

Li, Huizi ^{[1
]}

Chang, Chen Jian ^{[1
]}

Wang, Qi Jie ^{[1
]}

Tang, Dingyuan ^{[1
]}

Yoo, Seongwoo ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Photon Inst, Singapore 639798, Singapore

来源：

OPTICS LETTERS | 2021年 / 46卷 / 15期

关键词：

GENERATION; PULSES; AMPLIFIERS;

D O I：

10.1364/OL.431023

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a parabolicW-type thulium-doped fiber for the 1.7 mu m high-energy femtosecond pulsed laser. Despite its attractive normal dispersion, the fiber offers high gain in 1.7 mu m region thanks to its distributed short-pass filtering effect. With a proper dispersion management in an all-fiber chirped pulse amplification (CPA) scheme, we demonstrate so far the highest pulse energy of 128.0 nJ in a stable pulse of 174 fs in the 1.7-1.8 mu m region, which marks above an order of magnitude improvement in pulse energy while exhibiting the shortest pulse duration among fiber-based CPA works at 1.7 mu m. Hence, we provide a pathway to an energy scalable and efficient femtosecond laser at 1.7 mu m via a compact and elegant all-fiber solution. (C) 2021 Optical Society of America

引用

页码：3637 / 3640

页数：4

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