Abstract

Laser pulse contrast exceeding 1011 was demonstrated on a kilojoule-class petawatt laser for fast ignition experiments (LFEX) laser system [J. Phys. IV France 133, 81 (2006) [CrossRef]  ] by implementing a 2 in. plasma mirror. Laser beams of up to 1.2 kJ striking the plasma mirror with a pulse duration of 1.5 ps were reflected and focused onto a target without significant distortions in the focal spot. Transmitted light from the plasma mirror reveals that it has a high reflectivity 2 ps before the main peak. The estimated laser pulse contrast at the target was 1011 at 1 ns before the main peak. No preformed plasma was observed with optical interferometry diagnostics, but in the experiment without a plasma mirror a preplasma was clearly observed. The energetic proton was generated from a 0.1 μm thick CH film showing excellent pulse contrast. This technique constitutes a promising method to enhance the LFEX laser system performance in fast ignition experiments.

© 2016 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Spectrum shaping of an all Nd:glass CPA 1–10 ps kilojoule petawatt-class laser system

Ming Li, Bin Zhang, Yaping Dai, and Tao Wang
J. Opt. Soc. Am. B 27(8) 1534-1542 (2010)

Single plasma mirror providing 104 contrast enhancement and 70% reflectivity for intense femtosecond lasers

Shunsuke Inoue, Kazuya Maeda, Shigeki Tokita, Kazuaki Mori, Kensuke Teramoto, Masaki Hashida, and Shuji Sakabe
Appl. Opt. 55(21) 5647-5651 (2016)

Pre-plasma formation in experiments using petawatt lasers

Florian Wagner, Stefan Bedacht, Alex Ortner, Markus Roth, Anna Tauschwitz, Bernhard Zielbauer, and Vincent Bagnoud
Opt. Express 22(24) 29505-29514 (2014)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription