Study on periodicity of giant pulses with passive Q-switched laser

Zhu Changhong; Li Zhengjia; Chen Shushu; Qin Junlin; Liu Baining

LASER TECHNOLOGY > 2000 > 24(2): 85-89.

Zhu Changhong, Li Zhengjia, Chen Shushu, Qin Junlin, Liu Baining. Study on periodicity of giant pulses with passive Q-switched laser[J]. LASER TECHNOLOGY, 2000, 24(2): 85-89.

Citation:

Zhu Changhong, Li Zhengjia, Chen Shushu, Qin Junlin, Liu Baining. Study on periodicity of giant pulses with passive Q-switched laser[J]. LASER TECHNOLOGY, 2000, 24(2): 85-89.

Citation:

Zhu Changhong, Li Zhengjia, Chen Shushu, Qin Junlin, Liu Baining. Study on periodicity of giant pulses with passive Q-switched laser[J]. LASER TECHNOLOGY, 2000, 24(2): 85-89.

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Study on periodicity of giant pulses with passive Q-switched laser

National Laboratory of Laser Technology, HUST, Wuhan, 430074

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Received Date: January 17, 1999
Revised Date: April 23, 1999
Published Date: March 24, 2000

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Abstract

Abstract

For passive Q-switched solid state lasers including excite state absorption (ESA),the coupled rate equations is presented. By means of the adiabatic elimination approximation (AEA) and the Hopf bifurcation conditions,the series of multi-pulses produced by passive Q-switch correspond to the limit cycle on the phase plane of optic intensity and population inversion density. Threshold formula for giant pulses and analytical solution for pulses period or repetitive frequency are obtained. The phenomena about Cr4+:YAG saturable absorber Q-switched laser are explained. The calculated results accord with the experiment.
- passive Q-switch,
- adiabatic elimination approximation (AEA),
- Hopf bifurcation

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References

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