Efficient high-power UV laser generated by an optimized flat-flat actively Q-switched laser with extra-cavity harmonic generations

Y. J. Huang; P. Y. Chiang; H. C. Liang; Kuan-Wei Su; Yung-Fu Chen

doi:10.1016/j.optcom.2011.09.002

Efficient high-power UV laser generated by an optimized flat-flat actively Q-switched laser with extra-cavity harmonic generations

Y. J. Huang, P. Y. Chiang, H. C. Liang, Kuan-Wei Su, Yung-Fu Chen^*

^*Corresponding author for this work

Department of Electrophysics

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

6 Scopus citations

Abstract

We investigate the parasitic lasing effect in the high-power actively Q-switched laser with a flat-flat resonator. The parasitic lasing effect in the low-Q stage is found to lead to long tails in the output pulses, corresponding to the peak-power reduction. We experimentally determine the shortest cavity length without the parasitic lasing effect to optimize the performance of the high-power actively Q-switched laser with a flat-flat cavity. We further use the optimized fundamental laser to generate green and UV lasers by extra-cavity harmonic generations. At a pump power of 44 W, the output powers at 355 nm and 532 nm as high as 6.65 W and 8.38 W are obtained at a pulse repetition rate of 40 kHz.

Original language	English
Pages (from-to)	59-63
Number of pages	5
Journal	Optics Communications
Volume	285
Issue number	1
DOIs	https://doi.org/10.1016/j.optcom.2011.09.002
State	Published - 1 Jan 2012

Keywords

Acousto-optically Q-switching
Diode-pumped solid-state laser
Extra-cavity second and third harmonic generation
Parasitic lasing effect

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10.1016/j.optcom.2011.09.002

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title = "Efficient high-power UV laser generated by an optimized flat-flat actively Q-switched laser with extra-cavity harmonic generations",

abstract = "We investigate the parasitic lasing effect in the high-power actively Q-switched laser with a flat-flat resonator. The parasitic lasing effect in the low-Q stage is found to lead to long tails in the output pulses, corresponding to the peak-power reduction. We experimentally determine the shortest cavity length without the parasitic lasing effect to optimize the performance of the high-power actively Q-switched laser with a flat-flat cavity. We further use the optimized fundamental laser to generate green and UV lasers by extra-cavity harmonic generations. At a pump power of 44 W, the output powers at 355 nm and 532 nm as high as 6.65 W and 8.38 W are obtained at a pulse repetition rate of 40 kHz.",

keywords = "Acousto-optically Q-switching, Diode-pumped solid-state laser, Extra-cavity second and third harmonic generation, Parasitic lasing effect",

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

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AU - Chiang, P. Y.

AU - Liang, H. C.

AU - Su, Kuan-Wei

AU - Chen, Yung-Fu

PY - 2012/1/1

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N2 - We investigate the parasitic lasing effect in the high-power actively Q-switched laser with a flat-flat resonator. The parasitic lasing effect in the low-Q stage is found to lead to long tails in the output pulses, corresponding to the peak-power reduction. We experimentally determine the shortest cavity length without the parasitic lasing effect to optimize the performance of the high-power actively Q-switched laser with a flat-flat cavity. We further use the optimized fundamental laser to generate green and UV lasers by extra-cavity harmonic generations. At a pump power of 44 W, the output powers at 355 nm and 532 nm as high as 6.65 W and 8.38 W are obtained at a pulse repetition rate of 40 kHz.

AB - We investigate the parasitic lasing effect in the high-power actively Q-switched laser with a flat-flat resonator. The parasitic lasing effect in the low-Q stage is found to lead to long tails in the output pulses, corresponding to the peak-power reduction. We experimentally determine the shortest cavity length without the parasitic lasing effect to optimize the performance of the high-power actively Q-switched laser with a flat-flat cavity. We further use the optimized fundamental laser to generate green and UV lasers by extra-cavity harmonic generations. At a pump power of 44 W, the output powers at 355 nm and 532 nm as high as 6.65 W and 8.38 W are obtained at a pulse repetition rate of 40 kHz.

KW - Acousto-optically Q-switching

KW - Diode-pumped solid-state laser

KW - Extra-cavity second and third harmonic generation

KW - Parasitic lasing effect

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DO - 10.1016/j.optcom.2011.09.002

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JO - Optics Communications

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Efficient high-power UV laser generated by an optimized flat-flat actively Q-switched laser with extra-cavity harmonic generations

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Keywords

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