1.2 W single-frequency Tm3+/Ho3+ co-doped fiber oscillator at 2050 nm

In this Letter, a watt-level single-frequency fiber oscillator at 2050 nm was demonstrated for the first time, to the best of our knowlegde, in a linear laser cavity with a piece of an un-pumped Tm3+/Ho3+ co-doped fiber serving as a saturable absorber. With delicate optimization of mode filtering ef...

Full description

Saved in:
Bibliographic Details
Published in:Optics letters 2023-12, Vol.48 (23), p.6144-6147
Main Authors: Shi, Chaodu, Jiang, Peiheng, Fu, Shijie, Sheng, Quan, Chen, Lin, Shi, Wei, Fu, Cailing, Wang, Yiping, Yao, Jianquan
Format: Article
Language:English
Subjects:
Absorbers
Doped fibers
Holmium
Laser outputs
Oscillators
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this Letter, a watt-level single-frequency fiber oscillator at 2050 nm was demonstrated for the first time, to the best of our knowlegde, in a linear laser cavity with a piece of an un-pumped Tm3+/Ho3+ co-doped fiber serving as a saturable absorber. With delicate optimization of mode filtering effect of the dynamic gratings formed in the saturable absorber, a maximum single-frequency laser output power of 1.2 W was achieved under a total bidirectional pump power of 5.8 W at 1570 nm, and the corresponding optical efficiency is 20.7%. This is, to the best of our knowledge, the highest power of a single-frequency fiber oscillator at the wavelength above 2 µm.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.502554