High-energy, spatially flat-top green pump laser by beam homogenization for petawatt scale Ti:sapphire laser systems

Tanaka, Momoko; Kiriyama, Hiromitsu; Ochi, Yoshihiro; Nakai, Yoshiki; Sasao, Hajime; Okada, Hajime; Daido, Hiroyuki; Bolton, P.; Kawanishi, Shunichi

We have demonstrated that we can homogenize the spatial profile of a high-energy green laser pulse used for pumping a petawatt scale Ti:sapphire amplifier. The second harmonic of a high-energy, large-aperture Nd:glass laser system generates laser emission at a green wavelength with 75 J single pulse energy. Using a diffractive optical element for beam homogenization, we have obtained a highly spatially uniform flat-top second harmonic profile.

Language	:	English
Journal	:	Optics Communications
Volume	:	282
Number	:	22
Pages	:	p.4401 - 4403
Publication Year/Month	:	2009/11
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Paper URL	:	https://doi.org/10.1016/j.optcom.2009.07.064
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InCites™	:	Percentile:48.65 Category:Optics
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Registration No. : AA20090055
JAEA Abstracts No. : 44001510
Paper Submission No. : 18181

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