Watt-level 1.7-μm single-frequency thulium-doped fiber oscillator

被引：45

作者：

Zhang, Lu ^{[1
,2
]}

Zhang, Junxiang ^{[1
,2
]}

Sheng, Quan ^{[1
,2
]}

Shi, Chaodu ^{[1
,2
]}

Shi, Wei ^{[1
,2
]}

Yao, Jianquan ^{[1
,2
]}

机构：

[1] Tianjin Univ, Sch Precis Instrument & Optoelect Engn, Inst Laser & Optoelect, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Minist Educ, Key Lab Optoelect Informat Sci & Technol, Tianjin 300072, Peoples R China

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 17期

基金：

中国国家自然科学基金;

关键词：

NARROW-LINEWIDTH; RING LASER; CAVITY; POWER; NOISE;

D O I：

10.1364/OE.434001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Here we demonstrated an efficient high-power single-frequency thulium-doped fiber ring laser operating at 1720 nm. Three cascaded sub-rings were inserted into the main cavity to significantly enlarge the effective free spectral range. By incorporating a fiber Bragg grating, the single longitudinal mode operation was achieved. The maximum single-frequency output power reached up to 1.11 W under 3.75-W launched pump power, while the slope efficiency with respect to the absorbed pump power was 46.4%. The laser linewidth at maximum single-frequency power was measured of 1.9 kHz. Potential power scaling of the single-frequency output power with different quantity and lengths of the sub-rings was also theoretically investigated. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

收藏

页码：27048 / 27056

页数：9

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