High-dynamic-range cross-correlator for shot-to-shot measurement of temporal contrast

• Akira Kon

• Mamiko Nishiuchi

• Hiromitsu Kiriyama

• Koichi Ogura

• Michiaki Mori

• Hironao Sakaki

• Masaki Kando

• Kiminori Kondo

Abstract

The temporal contrast of an ultrahigh-intensity laser is a crucial parameter for laser plasma experiments. We have developed a multichannel cross-correlator (MCCC) for single-shot measurements of the temporal contrast in a high-power laser system. The MCCC is based on third-order cross-correlation, and has four channels and independent optical delay lines. We have experimentally demonstrated that the MCCC system achieves a high dynamic range of ∼10 12 and a large temporal window of ∼1 ns. Moreover, we were able to measure the shot-to-shot fluctuations of a short-prepulse intensity at −26 ps and long-pulse (amplified spontaneous emission, ASE) intensities at −30, −450, and −950 ps before the arrival of the main pulse at the interaction point.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 56 (1), 012701-, 2016-12-07

  IOP Publishing

Keywords

• General Physics and Astronomy
• General Engineering

Details

• CRID: 1360003449890869120
• NII Article ID: 210000147337
• DOI: 10.7567/jjap.56.012701
• ISSN: 13474065
• ISSN: 00214922
• Web Site: http://stacks.iop.org/1347-4065/56/i=1/a=012701/pdf
• Web Site: http://stacks.iop.org/1347-4065/56/i=1/a=012701?key=crossref.0e0d54c82e48f56ece64500e98f357ea
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.56.012701
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.56.012701/pdf
• Data Source:
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