High-power actively Q-switched Ho-doped gadolinium tantalate laser

Xiaoming Duan; Jiaze Wu; Renqin Dou; Qingli Zhang; Tongyu Dai; Xiaotao Yang

doi:10.1364/OE.420706

High-power actively Q-switched Ho-doped gadolinium tantalate laser

Xiaoming Duan^*
, Jiaze Wu
, Renqin Dou
, Qingli Zhang^*
, Tongyu Dai
, Xiaotao Yang^*

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology
CAS - Anhui Institute of Optics and Fine Mechanics
College of Power and Energy Engineering, Harbin Engineering University

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

In this paper, we present the acousto-optical (AO) Q-switched performance of a holmium (Ho):gadolinium tantalate (GdTaO₄) (Ho:GTO) laser pumped by a thulium (Tm)-fiber laser emitting at 1.94 µm. In the efficient continuous wave (CW) regime, a maximum output power of 30.5 W at 2068.8 nm was achieved, corresponding to a slope efficiency of 74.9% with respect to the absorbed pump power. In the Q-switching regime, pulse energies of 2.4 mJ, 1.2 mJ, and 0.9 mJ were obtained with pulse repetition frequencies of 10 kHz, 20 kHz, and 30 kHz, respectively. The minimum pulse widths were 18 ns, 23 ns, and 26 ns, corresponding to peak powers of approximately 133.3 kW, 52.2 kW, and 34.6 kW, respectively.

Original language	English
Pages (from-to)	12471-12477
Number of pages	7
Journal	Optics Express
Volume	29
Issue number	8
DOIs	https://doi.org/10.1364/OE.420706
State	Published - 12 Apr 2021

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title = "High-power actively Q-switched Ho-doped gadolinium tantalate laser",

abstract = "In this paper, we present the acousto-optical (AO) Q-switched performance of a holmium (Ho):gadolinium tantalate (GdTaO4) (Ho:GTO) laser pumped by a thulium (Tm)-fiber laser emitting at 1.94 µm. In the efficient continuous wave (CW) regime, a maximum output power of 30.5 W at 2068.8 nm was achieved, corresponding to a slope efficiency of 74.9\% with respect to the absorbed pump power. In the Q-switching regime, pulse energies of 2.4 mJ, 1.2 mJ, and 0.9 mJ were obtained with pulse repetition frequencies of 10 kHz, 20 kHz, and 30 kHz, respectively. The minimum pulse widths were 18 ns, 23 ns, and 26 ns, corresponding to peak powers of approximately 133.3 kW, 52.2 kW, and 34.6 kW, respectively.",

author = "Xiaoming Duan and Jiaze Wu and Renqin Dou and Qingli Zhang and Tongyu Dai and Xiaotao Yang",

note = "Publisher Copyright: {\textcopyright} 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement",

year = "2021",

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doi = "10.1364/OE.420706",

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T1 - High-power actively Q-switched Ho-doped gadolinium tantalate laser

AU - Duan, Xiaoming

AU - Wu, Jiaze

AU - Dou, Renqin

AU - Zhang, Qingli

AU - Dai, Tongyu

AU - Yang, Xiaotao

PY - 2021/4/12

Y1 - 2021/4/12

N2 - In this paper, we present the acousto-optical (AO) Q-switched performance of a holmium (Ho):gadolinium tantalate (GdTaO4) (Ho:GTO) laser pumped by a thulium (Tm)-fiber laser emitting at 1.94 µm. In the efficient continuous wave (CW) regime, a maximum output power of 30.5 W at 2068.8 nm was achieved, corresponding to a slope efficiency of 74.9% with respect to the absorbed pump power. In the Q-switching regime, pulse energies of 2.4 mJ, 1.2 mJ, and 0.9 mJ were obtained with pulse repetition frequencies of 10 kHz, 20 kHz, and 30 kHz, respectively. The minimum pulse widths were 18 ns, 23 ns, and 26 ns, corresponding to peak powers of approximately 133.3 kW, 52.2 kW, and 34.6 kW, respectively.

AB - In this paper, we present the acousto-optical (AO) Q-switched performance of a holmium (Ho):gadolinium tantalate (GdTaO4) (Ho:GTO) laser pumped by a thulium (Tm)-fiber laser emitting at 1.94 µm. In the efficient continuous wave (CW) regime, a maximum output power of 30.5 W at 2068.8 nm was achieved, corresponding to a slope efficiency of 74.9% with respect to the absorbed pump power. In the Q-switching regime, pulse energies of 2.4 mJ, 1.2 mJ, and 0.9 mJ were obtained with pulse repetition frequencies of 10 kHz, 20 kHz, and 30 kHz, respectively. The minimum pulse widths were 18 ns, 23 ns, and 26 ns, corresponding to peak powers of approximately 133.3 kW, 52.2 kW, and 34.6 kW, respectively.

UR - https://www.scopus.com/pages/publications/85104449103

U2 - 10.1364/OE.420706

DO - 10.1364/OE.420706

M3 - 文章

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AN - SCOPUS:85104449103

SN - 1094-4087

VL - 29

SP - 12471

EP - 12477

JO - Optics Express

JF - Optics Express

IS - 8

ER -

High-power actively Q-switched Ho-doped gadolinium tantalate laser

Abstract

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