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High-power Nd3+:glass laser system in KAIST (Sinmyung I)

Published online by Cambridge University Press:  09 March 2009

H.J. Kong ,
S.S. Lee ,
H.S. Kim ,
K.G. Han ,
N.S. Kim ,
K.Y. Um ,
J.R. Park  and
J.Y. Lee
H.J. Kong
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, 373–1, Kusong-dong, Yusong-gu, Taejon 305–701, Korea
S.S. Lee
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, 373–1, Kusong-dong, Yusong-gu, Taejon 305–701, Korea
H.S. Kim
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, 373–1, Kusong-dong, Yusong-gu, Taejon 305–701, Korea
K.G. Han
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, 373–1, Kusong-dong, Yusong-gu, Taejon 305–701, Korea
N.S. Kim
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, 373–1, Kusong-dong, Yusong-gu, Taejon 305–701, Korea
K.Y. Um
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, 373–1, Kusong-dong, Yusong-gu, Taejon 305–701, Korea
J.R. Park
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, 373–1, Kusong-dong, Yusong-gu, Taejon 305–701, Korea
J.Y. Lee
Affiliation:
Department of Physics, Korea Advanced Institute of Science and Technology, 373–1, Kusong-dong, Yusong-gu, Taejon 305–701, Korea
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Abstract

A high-power Nd3+:glass laser system has been constructed and tested. This system consists of a master oscillator, a four-pass amplifier for preamplification, and five-stage amplifiers. The system has been demonstrated in excess of 80 J (2 TW) at 40-ps pulse duration. Final laser beam quality was quite good due to the compensation of the polarization distortion in the four-pass preamplifier, the minimization of the diffraction effect by the image relaying, and the elimination of high spatial frequency components by the spatial filtering. This enables us to obtain high laser output power without any severe spatial spiking effects. Gains and spatial profiles of output pulses were measured after each amplifier stage.

Type
Regular Papers
Information
Laser and Particle Beams , Volume 15 , Issue 2 , June 1997 , pp. 317 - 324
Copyright
Copyright © Cambridge University Press 1997

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References

REFERENCES

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