Lensless intracavity focusing in a passively Q-switched all-fiber laser using the mode-field-area mismatch

被引：2
作者：
Tsai, Tzong-Yow [1 ]
Lee, Zhi-Cheng [1 ]
Tsao, Hong-Xi [2 ]
Lin, Shih-Ting [2 ]
机构：
[1] Natl Cheng Kung Univ, Dept Elect Engn, Inst Microelect, Lasers & Photon Lab, Tainan 70101, Taiwan
[2] Ind Technol Res Inst, Tainan 734, Taiwan
来源：
OPTICS LETTERS | 2012年 / 37卷 / 13期
关键词：
SATURABLE-ABSORBER Q; MU-M;
D O I：
10.1364/OL.37.002610
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Intense lensless intracavity focusing in a saturable absorber Q-switched all-fiber laser resonator by use of loss arrangement and mode-field-area mismatch between the fibers is investigated for the first time. The intracavity power distribution was related to the locations and values of the cavity losses as the saturable absorption loss, the reflection loss of the output coupler, and the splicing loss between the gain fiber and the absorber fiber. With a mode-field-area mismatch and a reduced splicing loss with the gain fiber, a power density in the absorber fiber was achieved that was 11.9 times higher than that in the gain fiber. (C) 2012 Optical Society of America
引用
收藏
页码：2610 / 2612
页数：3
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