Characterization of wave-front corrected 100 TW, 10 Hz laser pulses with peak intensities greater than 1020W∕cm2

An improvement of laser-focused peak intensity has been achieved in a JAERI 100 TW Ti:sapphire chirped-pulse amplifier chain with a feedback controlled adaptive optics system operating at a 10 Hz repetition rate. The Strehl ratio was enhanced to 0.8 by means of a Bimorph deformable mirror with a Sha...

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Bibliographic Details
Published in:Review of scientific instruments 2006-02, Vol.77 (2)
Main Authors: Akahane, Yutaka, Ma, Jinglong, Fukuda, Yuji, Aoyoma, Makoto, Kiriyama, Hiromitsu, Sheldakova, Julia V., Kudryashov, Alexis V., Yamakawa, Koichi
Format: Article
Language:English
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Summary:An improvement of laser-focused peak intensity has been achieved in a JAERI 100 TW Ti:sapphire chirped-pulse amplifier chain with a feedback controlled adaptive optics system operating at a 10 Hz repetition rate. The Strehl ratio was enhanced to 0.8 by means of a Bimorph deformable mirror with a Shack-Hartmann wave-front sensor. Measurements of optical parameters of the laser pulse and an experimental tunneling ionization yield of helium have practically confirmed focusing to ultrarelativistic intensities of over 1020W∕cm2 within 16% accuracy.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.2166669