Chinese Journal of Lasers, Volume. 33, Issue suppl, 115(2006)

Efficient Second Harmonic Generation of Ultra Intense Femtosecond Ti:Sapphire Laser

[in Chinese]1、*, [in Chinese]1, [in Chinese]2, and [in Chinese]2
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
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    The methods for increasing the conversion efficiency of the type Ⅰ and type Ⅱ second harmonic generation with KDP crystal for the ultra intense femtosecond laser pulse have been discussed in detail. The results show that group-velocity mismatching is the main reason of the broadening of the second harmonic pulse and could lead to the decrement of conversion efficiency. The effects of nonlinear phase-modulation cause the distortion of the shape of the second harmonic pulse and also decrease the conversion efficiency. For the type Ⅰ second harmonic generation, the proper spatial phase-mismatching can be helpful in compensation for the decrement of the conversion efficiency caused by the self- and cross-phase-modulation. For the type Ⅱ second harmonic generation, the proper time predelay to the incident fundamental extraordinary pulse can efficiently increase the conversion efficiency, and also restrain the broadening of second harmonic pulse.

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    [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Efficient Second Harmonic Generation of Ultra Intense Femtosecond Ti:Sapphire Laser[J]. Chinese Journal of Lasers, 2006, 33(suppl): 115

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    Paper Information

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    Received: --

    Accepted: --

    Published Online: Apr. 21, 2006

    The Author Email: (anryco@sohu.com)

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