Comparative performance of passively Q-switched diode-pumped Yb 3+-doped tungstate and garnet lasers using Cr4+:YAG saturable absorber

Yehoshua Kalisky; Ofra Kalisky; Uzi Rachum; Georges Boulon; Alain Brenier

doi:10.1109/JSTQE.2007.896084

Comparative performance of passively Q-switched diode-pumped Yb ³⁺-doped tungstate and garnet lasers using Cr⁴⁺:YAG saturable absorber

Yehoshua Kalisky, Ofra Kalisky, Uzi Rachum, Georges Boulon, Alain Brenier

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

15 Scopus citations

Abstract

We investigated the continuous wave (CW) free-running and repetitive modulation in the kilohertz frequency domain of a passively Q-switched diode-pumped Yb:YAG, Yb:GGG, and Yb:KYW lasers by using Cr⁴⁺:YAG as a saturable absorber. The results presented in this paper are focused on the design of a passively Q-switched Yb-doped garnets or Yb-doped tungstates microlasers. The free-running performance of Yb:YAG, Yb:GGG, Yb:KGW, and Yb:KYW were characterized, and experimental parameters such as gain and loss were evaluated. We carried out a fit between our experimental results and an existing numerical model, which relates the experimental and the physical parameters of the ytterbium diode-pumped system to the minimal threshold pumping power. The best performance among the laser crystals was obtained for Yb:YAG laser. A maximum peak power of ≈4.5 kW at an average output power of 1.32 W was extracted with an extraction efficiency of ≈25%.

Original language	English
Pages (from-to)	502-510
Number of pages	9
Journal	IEEE Journal of Selected Topics in Quantum Electronics
Volume	13
Issue number	3
DOIs	https://doi.org/10.1109/JSTQE.2007.896084
State	Published - 1 May 2007
Externally published	Yes

Keywords

Diode-pumped lasers
Passive Q-switching
Yb:GGG
Yb:KYW laser
Yb:YAG

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

Access to Document

10.1109/JSTQE.2007.896084

Cite this

@article{660a118823ea41088ed60c998164781d,

title = "Comparative performance of passively Q-switched diode-pumped Yb 3+-doped tungstate and garnet lasers using Cr4+:YAG saturable absorber",

abstract = "We investigated the continuous wave (CW) free-running and repetitive modulation in the kilohertz frequency domain of a passively Q-switched diode-pumped Yb:YAG, Yb:GGG, and Yb:KYW lasers by using Cr4+:YAG as a saturable absorber. The results presented in this paper are focused on the design of a passively Q-switched Yb-doped garnets or Yb-doped tungstates microlasers. The free-running performance of Yb:YAG, Yb:GGG, Yb:KGW, and Yb:KYW were characterized, and experimental parameters such as gain and loss were evaluated. We carried out a fit between our experimental results and an existing numerical model, which relates the experimental and the physical parameters of the ytterbium diode-pumped system to the minimal threshold pumping power. The best performance among the laser crystals was obtained for Yb:YAG laser. A maximum peak power of ≈4.5 kW at an average output power of 1.32 W was extracted with an extraction efficiency of ≈25%.",

keywords = "Diode-pumped lasers, Passive Q-switching, Yb:GGG, Yb:KYW laser, Yb:YAG",

author = "Yehoshua Kalisky and Ofra Kalisky and Uzi Rachum and Georges Boulon and Alain Brenier",

year = "2007",

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AU - Kalisky, Yehoshua

AU - Kalisky, Ofra

AU - Rachum, Uzi

AU - Boulon, Georges

AU - Brenier, Alain

PY - 2007/5/1

Y1 - 2007/5/1

N2 - We investigated the continuous wave (CW) free-running and repetitive modulation in the kilohertz frequency domain of a passively Q-switched diode-pumped Yb:YAG, Yb:GGG, and Yb:KYW lasers by using Cr4+:YAG as a saturable absorber. The results presented in this paper are focused on the design of a passively Q-switched Yb-doped garnets or Yb-doped tungstates microlasers. The free-running performance of Yb:YAG, Yb:GGG, Yb:KGW, and Yb:KYW were characterized, and experimental parameters such as gain and loss were evaluated. We carried out a fit between our experimental results and an existing numerical model, which relates the experimental and the physical parameters of the ytterbium diode-pumped system to the minimal threshold pumping power. The best performance among the laser crystals was obtained for Yb:YAG laser. A maximum peak power of ≈4.5 kW at an average output power of 1.32 W was extracted with an extraction efficiency of ≈25%.

AB - We investigated the continuous wave (CW) free-running and repetitive modulation in the kilohertz frequency domain of a passively Q-switched diode-pumped Yb:YAG, Yb:GGG, and Yb:KYW lasers by using Cr4+:YAG as a saturable absorber. The results presented in this paper are focused on the design of a passively Q-switched Yb-doped garnets or Yb-doped tungstates microlasers. The free-running performance of Yb:YAG, Yb:GGG, Yb:KGW, and Yb:KYW were characterized, and experimental parameters such as gain and loss were evaluated. We carried out a fit between our experimental results and an existing numerical model, which relates the experimental and the physical parameters of the ytterbium diode-pumped system to the minimal threshold pumping power. The best performance among the laser crystals was obtained for Yb:YAG laser. A maximum peak power of ≈4.5 kW at an average output power of 1.32 W was extracted with an extraction efficiency of ≈25%.

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