A passively Q-switching of diode-pumped 2.08-µm Ho:CaF2 laser

Xiaoming Duan; Yingjie Shen; Zhen Zhang; Liangbi Su; Tongyu Dai

doi:10.1016/j.infrared.2019.103071

A passively Q-switching of diode-pumped 2.08-µm Ho:CaF₂ laser

Xiaoming Duan^*
, Yingjie Shen
, Zhen Zhang
, Liangbi Su
, Tongyu Dai

^*Corresponding author for this work

School of Astronautics

Harbin Institute of Technology
Yantai University
CAS - Shanghai Institute of Ceramics

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

16 Scopus citations

Abstract

In this paper we demonstrate a continuous wave and passively Q-switched Ho:CaF₂ laser pumped by a laser diode at 1.94 µm. In the continuous wave regime, the Ho:CaF₂ laser produced 4.2 W output power at 2085.2 nm, corresponding to the slope efficiency of 48.4% with respect to the absorbed pump power. With Cr²⁺:ZnS saturable absorber, the maximum average output power of 3.6 W at 2084.1 nm, minimum pulse width of 92 ns and repletion rate of 5.88 kHz were achieved with a slope efficiency of 42.2%. Furthermore, the beam quality factors of passively Q-switched diode-pumped Ho:CaF₂ laser were estimated to be about 1.3 in both vertical and horizontal directions.

Original language	English
Article number	103071
Journal	Infrared Physics and Technology
Volume	103
DOIs	https://doi.org/10.1016/j.infrared.2019.103071
State	Published - Dec 2019

Keywords

Diode-pumped
Ho:CaF
Infrared lasers
Passive Q-switched

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10.1016/j.infrared.2019.103071

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title = "A passively Q-switching of diode-pumped 2.08-µm Ho:CaF2 laser",

abstract = "In this paper we demonstrate a continuous wave and passively Q-switched Ho:CaF2 laser pumped by a laser diode at 1.94 µm. In the continuous wave regime, the Ho:CaF2 laser produced 4.2 W output power at 2085.2 nm, corresponding to the slope efficiency of 48.4\% with respect to the absorbed pump power. With Cr2+:ZnS saturable absorber, the maximum average output power of 3.6 W at 2084.1 nm, minimum pulse width of 92 ns and repletion rate of 5.88 kHz were achieved with a slope efficiency of 42.2\%. Furthermore, the beam quality factors of passively Q-switched diode-pumped Ho:CaF2 laser were estimated to be about 1.3 in both vertical and horizontal directions.",

keywords = "Diode-pumped, Ho:CaF, Infrared lasers, Passive Q-switched",

author = "Xiaoming Duan and Yingjie Shen and Zhen Zhang and Liangbi Su and Tongyu Dai",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = dec,

doi = "10.1016/j.infrared.2019.103071",

language = "英语",

volume = "103",

journal = "Infrared Physics and Technology",

issn = "1350-4495",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - A passively Q-switching of diode-pumped 2.08-µm Ho:CaF2 laser

AU - Duan, Xiaoming

AU - Shen, Yingjie

AU - Zhang, Zhen

AU - Su, Liangbi

AU - Dai, Tongyu

PY - 2019/12

Y1 - 2019/12

N2 - In this paper we demonstrate a continuous wave and passively Q-switched Ho:CaF2 laser pumped by a laser diode at 1.94 µm. In the continuous wave regime, the Ho:CaF2 laser produced 4.2 W output power at 2085.2 nm, corresponding to the slope efficiency of 48.4% with respect to the absorbed pump power. With Cr2+:ZnS saturable absorber, the maximum average output power of 3.6 W at 2084.1 nm, minimum pulse width of 92 ns and repletion rate of 5.88 kHz were achieved with a slope efficiency of 42.2%. Furthermore, the beam quality factors of passively Q-switched diode-pumped Ho:CaF2 laser were estimated to be about 1.3 in both vertical and horizontal directions.

AB - In this paper we demonstrate a continuous wave and passively Q-switched Ho:CaF2 laser pumped by a laser diode at 1.94 µm. In the continuous wave regime, the Ho:CaF2 laser produced 4.2 W output power at 2085.2 nm, corresponding to the slope efficiency of 48.4% with respect to the absorbed pump power. With Cr2+:ZnS saturable absorber, the maximum average output power of 3.6 W at 2084.1 nm, minimum pulse width of 92 ns and repletion rate of 5.88 kHz were achieved with a slope efficiency of 42.2%. Furthermore, the beam quality factors of passively Q-switched diode-pumped Ho:CaF2 laser were estimated to be about 1.3 in both vertical and horizontal directions.

KW - Diode-pumped

KW - Ho:CaF

KW - Infrared lasers

KW - Passive Q-switched

UR - https://www.scopus.com/pages/publications/85073686544

U2 - 10.1016/j.infrared.2019.103071

DO - 10.1016/j.infrared.2019.103071

M3 - 文章

AN - SCOPUS:85073686544

SN - 1350-4495

VL - 103

JO - Infrared Physics and Technology

JF - Infrared Physics and Technology

M1 - 103071

ER -

A passively Q-switching of diode-pumped 2.08-µm Ho:CaF₂ laser

Abstract

Keywords

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