Doubly Q-switched single longitudinal mode Nd:YAG laser with electro-optical modulator and Cr4＋:YAG

Duo Jin; Zhenxu Bai; Qingzheng Wang; Yifu Chen; Zhaohong Liu; Rong Fan; Yaoyao Qi; Jie Ding; Xuezong Yang; Yulei Wang; Zhiwei Lu

doi:10.1016/j.optcom.2020.125500

Doubly Q-switched single longitudinal mode Nd:YAG laser with electro-optical modulator and Cr^4＋:YAG

Duo Jin, Zhenxu Bai^*, Qingzheng Wang, Yifu Chen, Zhaohong Liu, Rong Fan, Yaoyao Qi, Jie Ding, Xuezong Yang, Yulei Wang, Zhiwei Lu

^*Corresponding author for this work

MQ Photonics Research Centre

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

27 Citations (Scopus)

Abstract

An electro-optical modulator (EOM) and Cr^4＋:YAG saturable-absorber-based doubly Q-switched Nd:YAG laser at 1.06μm with single-longitudinal-mode (SLM) output was demonstrated. The spatial-hole-burning suppression and cavity axial-mode selection were provided by a twisted-mode technique and resonant-reflector-mediated SLM operation. The Cr^4＋:YAG initial transmittance (T₀) affected the pulse profile, pulse energy, and laser spectra, which were analyzed theoretically and experimentally. Consequently, the laser output obtained an SLM rate of 96.2% with a symmetry factor of 0.64 when T₀ was 6.2%. The results indicate that symmetric and SLM laser pulse can be obtained in a double Q-switched laser by adjusting the cavity loss according to T₀. Compared with a solely Q-switched laser, the double Q-switches of EOM and Cr^4＋:YAG provide a practical route toward the generation of a symmetric temporal profile and SLM operation.

Original language	English
Article number	125500
Pages (from-to)	1-6
Number of pages	6
Journal	Optics Communications
Volume	463
DOIs	https://doi.org/10.1016/j.optcom.2020.125500
Publication status	Published - 15 May 2020

Keywords

Doubly Q-switched
Resonant reflector
Single-longitudinal-mode
Symmetric pulses
Twisted-mode cavity

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10.1016/j.optcom.2020.125500

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@article{ec7273af0a4442418b156fae5527dad7,

title = "Doubly Q-switched single longitudinal mode Nd:YAG laser with electro-optical modulator and Cr4＋:YAG",

abstract = "An electro-optical modulator (EOM) and Cr4＋:YAG saturable-absorber-based doubly Q-switched Nd:YAG laser at 1.06μm with single-longitudinal-mode (SLM) output was demonstrated. The spatial-hole-burning suppression and cavity axial-mode selection were provided by a twisted-mode technique and resonant-reflector-mediated SLM operation. The Cr4＋:YAG initial transmittance (T0) affected the pulse profile, pulse energy, and laser spectra, which were analyzed theoretically and experimentally. Consequently, the laser output obtained an SLM rate of 96.2\% with a symmetry factor of 0.64 when T0 was 6.2\%. The results indicate that symmetric and SLM laser pulse can be obtained in a double Q-switched laser by adjusting the cavity loss according to T0. Compared with a solely Q-switched laser, the double Q-switches of EOM and Cr4＋:YAG provide a practical route toward the generation of a symmetric temporal profile and SLM operation.",

keywords = "Doubly Q-switched, Resonant reflector, Single-longitudinal-mode, Symmetric pulses, Twisted-mode cavity",

author = "Duo Jin and Zhenxu Bai and Qingzheng Wang and Yifu Chen and Zhaohong Liu and Rong Fan and Yaoyao Qi and Jie Ding and Xuezong Yang and Yulei Wang and Zhiwei Lu",

year = "2020",

month = may,

day = "15",

doi = "10.1016/j.optcom.2020.125500",

language = "English",

volume = "463",

pages = "1--6",

journal = "Optics Communications",

issn = "0030-4018",

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TY - JOUR

T1 - Doubly Q-switched single longitudinal mode Nd:YAG laser with electro-optical modulator and Cr4＋:YAG

AU - Jin, Duo

AU - Bai, Zhenxu

AU - Wang, Qingzheng

AU - Chen, Yifu

AU - Liu, Zhaohong

AU - Fan, Rong

AU - Qi, Yaoyao

AU - Ding, Jie

AU - Yang, Xuezong

AU - Wang, Yulei

AU - Lu, Zhiwei

PY - 2020/5/15

Y1 - 2020/5/15

N2 - An electro-optical modulator (EOM) and Cr4＋:YAG saturable-absorber-based doubly Q-switched Nd:YAG laser at 1.06μm with single-longitudinal-mode (SLM) output was demonstrated. The spatial-hole-burning suppression and cavity axial-mode selection were provided by a twisted-mode technique and resonant-reflector-mediated SLM operation. The Cr4＋:YAG initial transmittance (T0) affected the pulse profile, pulse energy, and laser spectra, which were analyzed theoretically and experimentally. Consequently, the laser output obtained an SLM rate of 96.2% with a symmetry factor of 0.64 when T0 was 6.2%. The results indicate that symmetric and SLM laser pulse can be obtained in a double Q-switched laser by adjusting the cavity loss according to T0. Compared with a solely Q-switched laser, the double Q-switches of EOM and Cr4＋:YAG provide a practical route toward the generation of a symmetric temporal profile and SLM operation.

AB - An electro-optical modulator (EOM) and Cr4＋:YAG saturable-absorber-based doubly Q-switched Nd:YAG laser at 1.06μm with single-longitudinal-mode (SLM) output was demonstrated. The spatial-hole-burning suppression and cavity axial-mode selection were provided by a twisted-mode technique and resonant-reflector-mediated SLM operation. The Cr4＋:YAG initial transmittance (T0) affected the pulse profile, pulse energy, and laser spectra, which were analyzed theoretically and experimentally. Consequently, the laser output obtained an SLM rate of 96.2% with a symmetry factor of 0.64 when T0 was 6.2%. The results indicate that symmetric and SLM laser pulse can be obtained in a double Q-switched laser by adjusting the cavity loss according to T0. Compared with a solely Q-switched laser, the double Q-switches of EOM and Cr4＋:YAG provide a practical route toward the generation of a symmetric temporal profile and SLM operation.

KW - Doubly Q-switched

KW - Resonant reflector

KW - Single-longitudinal-mode

KW - Symmetric pulses

KW - Twisted-mode cavity

UR - https://www.scopus.com/pages/publications/85079359451

U2 - 10.1016/j.optcom.2020.125500

DO - 10.1016/j.optcom.2020.125500

M3 - Article

AN - SCOPUS:85079359451

SN - 0030-4018

VL - 463

SP - 1

EP - 6

JO - Optics Communications

JF - Optics Communications

M1 - 125500

ER -

Doubly Q-switched single longitudinal mode Nd:YAG laser with electro-optical modulator and Cr^4＋:YAG

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Keywords

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