Abstract
To efficiently eliminate picosecond pre-pulses that accompany ultrashort pulses emitted from high-power chirped-pulse-amplification laser systems, we have developed a high-performance plasma mirror system. By reducing the reflectivity of the antireflection coating on the substrate for the plasma mirror to the limit of current technology (), we achieved the highest pre-pulse contrast enhancement reported to date for a single plasma mirror of at 1 ps before the pulse peak. By optimizing the laser incidence to the plasma mirror and the laser fluence, the reflectivity of the plasma mirror has been improved to 70%. The contrast improvement indicates extensibility to 100 PW class lasers by doubling this plasma mirror system. Contrast enhancement of should be possible without a serious reduction in energy (no more than 50%).
© 2016 Optical Society of America
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Shunsuke Inoue, Kazuya Maeda, Shigeki Tokita, Kazuaki Mori, Kensuke Teramoto, Masaki Hashida, and Shuji Sakabe, "Single plasma mirror providing 104 contrast enhancement and 70% reflectivity for intense femtosecond lasers: publisher’s note," Appl. Opt. 55, 6435-6435 (2016)https://opg.optica.org/ao/abstract.cfm?uri=ao-55-23-6435
18 July 2016: A correction was made to a formula within the body of the paper.
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