Efficient high-pulse-energy eye-safe laser generated by an intracavity Nd: YLF/KTP optical parametric oscillator: Role of thermally induced polarization switching

Y. J. Huang; C. Y. Tang; Y. P. Huang; C. Y. Cho; Kuan-Wei Su; Yung-Fu Chen

doi:10.7452/lapl.201210071

Efficient high-pulse-energy eye-safe laser generated by an intracavity Nd: YLF/KTP optical parametric oscillator: Role of thermally induced polarization switching

Y. J. Huang, C. Y. Tang, Y. P. Huang, C. Y. Cho, Kuan-Wei Su, Yung-Fu Chen^*

^*Corresponding author for this work

Department of Electrophysics

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

9 Scopus citations

Abstract

A high-pulse-energy eye-safe laser at 1552 nm is effectually generated by an intracavity Nd:YLF/KTP optical parametric oscillator (OPO) with the help of the thermally induced polarization switching. The polarization characteristics of the c-cut Nd:YLF laser at 1053 nm in the continuous-wave (CW) and Q-switched operation are comprehensively investigated. We experimentally verify the thermally induced birefringence can lead to a polarization switching between the mutually orthogonal components of the fundamental pulses. Consequently, an efficient intracavity nonlinear frequency conversion can be achieved in an optically isotropic laser crystal without any additional polarization control. With this finding, the pulse energy and peak power of the compact Nd:YLF/KTP eye-safe laser under an incident pump power of 12.7 W and a pulse repetition rate of 5 kHz are up to 306 μJ and 4 kW, respectively.

Original language	English
Pages (from-to)	709-715
Number of pages	7
Journal	Laser Physics Letters
Volume	9
Issue number	10
DOIs	https://doi.org/10.7452/lapl.201210071
State	Published - 2012

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title = "Efficient high-pulse-energy eye-safe laser generated by an intracavity Nd: YLF/KTP optical parametric oscillator: Role of thermally induced polarization switching",

abstract = "A high-pulse-energy eye-safe laser at 1552 nm is effectually generated by an intracavity Nd:YLF/KTP optical parametric oscillator (OPO) with the help of the thermally induced polarization switching. The polarization characteristics of the c-cut Nd:YLF laser at 1053 nm in the continuous-wave (CW) and Q-switched operation are comprehensively investigated. We experimentally verify the thermally induced birefringence can lead to a polarization switching between the mutually orthogonal components of the fundamental pulses. Consequently, an efficient intracavity nonlinear frequency conversion can be achieved in an optically isotropic laser crystal without any additional polarization control. With this finding, the pulse energy and peak power of the compact Nd:YLF/KTP eye-safe laser under an incident pump power of 12.7 W and a pulse repetition rate of 5 kHz are up to 306 μJ and 4 kW, respectively.",

author = "Huang, {Y. J.} and Tang, {C. Y.} and Huang, {Y. P.} and Cho, {C. Y.} and Kuan-Wei Su and Yung-Fu Chen",

year = "2012",

doi = "10.7452/lapl.201210071",

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journal = "Laser Physics Letters",

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T1 - Efficient high-pulse-energy eye-safe laser generated by an intracavity Nd

T2 - YLF/KTP optical parametric oscillator: Role of thermally induced polarization switching

AU - Huang, Y. J.

AU - Tang, C. Y.

AU - Huang, Y. P.

AU - Cho, C. Y.

AU - Su, Kuan-Wei

AU - Chen, Yung-Fu

PY - 2012

Y1 - 2012

N2 - A high-pulse-energy eye-safe laser at 1552 nm is effectually generated by an intracavity Nd:YLF/KTP optical parametric oscillator (OPO) with the help of the thermally induced polarization switching. The polarization characteristics of the c-cut Nd:YLF laser at 1053 nm in the continuous-wave (CW) and Q-switched operation are comprehensively investigated. We experimentally verify the thermally induced birefringence can lead to a polarization switching between the mutually orthogonal components of the fundamental pulses. Consequently, an efficient intracavity nonlinear frequency conversion can be achieved in an optically isotropic laser crystal without any additional polarization control. With this finding, the pulse energy and peak power of the compact Nd:YLF/KTP eye-safe laser under an incident pump power of 12.7 W and a pulse repetition rate of 5 kHz are up to 306 μJ and 4 kW, respectively.

AB - A high-pulse-energy eye-safe laser at 1552 nm is effectually generated by an intracavity Nd:YLF/KTP optical parametric oscillator (OPO) with the help of the thermally induced polarization switching. The polarization characteristics of the c-cut Nd:YLF laser at 1053 nm in the continuous-wave (CW) and Q-switched operation are comprehensively investigated. We experimentally verify the thermally induced birefringence can lead to a polarization switching between the mutually orthogonal components of the fundamental pulses. Consequently, an efficient intracavity nonlinear frequency conversion can be achieved in an optically isotropic laser crystal without any additional polarization control. With this finding, the pulse energy and peak power of the compact Nd:YLF/KTP eye-safe laser under an incident pump power of 12.7 W and a pulse repetition rate of 5 kHz are up to 306 μJ and 4 kW, respectively.

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Efficient high-pulse-energy eye-safe laser generated by an intracavity Nd: YLF/KTP optical parametric oscillator: Role of thermally induced polarization switching

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