Highly efficient double plasma mirror producing ultrahigh-contrast multi-petawatt laser pulses

We present a highly efficient double plasma mirror (DPM) that provides ultrahigh-contrast multi-petawatt (PW) laser pulses with a temporal contrast ratio reaching 1 0 17 up to 160 ps and 1 0 12 up to 2 ps before the main pulse. The high reflectivity of 70%, along with the high-contrast enhancement f...

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Bibliographic Details
Published in:Optics letters 2020-12, Vol.45 (23), p.6342-6345
Main Authors: Choi, Il Woo, Jeon, Cheonha, Lee, Seong Geun, Kim, Seung Yeon, Kim, Tae Yun, Kim, I Jong, Lee, Hwang Woon, Woo Yoon, Jin, Sung, Jae Hee, Lee, Seong Ku, Nam, Chang Hee
Format: Article
Language:English
Subjects:
Lasers
Sapphire
Wave generation
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Summary:We present a highly efficient double plasma mirror (DPM) that provides ultrahigh-contrast multi-petawatt (PW) laser pulses with a temporal contrast ratio reaching 1 0 17 up to 160 ps and 1 0 12 up to 2 ps before the main pulse. The high reflectivity of 70%, along with the high-contrast enhancement factor of  700,000, was achieved from the DPM installed after the final stage of a 4 PW Ti:sapphire laser. The 4 PW laser was equipped with cross-polarized wave generation and optical parametric chirped-pulse amplification stages for initial high-contrast operation. The DPM operation was undertaken with conditions that did not modify the spatiotemporal profiles of incident multi-PW laser pulses. This highly efficient DPM with the high-contrast enhancement promises the utilization of multiple PMs as a practical rear end for upcoming tens of petawatt lasers to achieve ultrahigh temporal contrast.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.409749