Optical switching and contrast enhancement in intense laser systems by cascaded optical parametric amplification

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Optical parametric chirped-pulse amplification (OPCPA) can be used to improve the prepulse contrast in chirped-pulse amplification systems by amplifying the main pulse with a total saturated OPCPA gain, while not affecting the preceding prepulses of the seed oscillator mode-locked pulse train. We show that a simple modification of a multistage OPCPA system into a cascaded optical parametric amplifier (COPA) results in an optical switch and extreme contrast enhancement which can completely eliminate the preceding and trailing oscillator pulses. Instrument-limited measurement of prepulse contrast ratio of 1.4 x 10{sup 11} is demonstrated from COPA at a 30-mJ level.

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Jovanovic, I; Haefner, C; Wattellier, B & Barty, C J September 6, 2005.

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Optical parametric chirped-pulse amplification (OPCPA) can be used to improve the prepulse contrast in chirped-pulse amplification systems by amplifying the main pulse with a total saturated OPCPA gain, while not affecting the preceding prepulses of the seed oscillator mode-locked pulse train. We show that a simple modification of a multistage OPCPA system into a cascaded optical parametric amplifier (COPA) results in an optical switch and extreme contrast enhancement which can completely eliminate the preceding and trailing oscillator pulses. Instrument-limited measurement of prepulse contrast ratio of 1.4 x 10{sup 11} is demonstrated from COPA at a 30-mJ level.

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PDF-file: 19 pages; size: 0.2 Mbytes

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  • Journal Name: Optics Letters; Journal Volume: 31; Journal Issue: 6

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  • Report No.: UCRL-JRNL-215289
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 883595
  • Archival Resource Key: ark:/67531/metadc892703

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 6, 2005

Added to The UNT Digital Library

  • Sept. 23, 2016, 2:42 p.m.

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  • Dec. 7, 2016, 6:34 p.m.

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Jovanovic, I; Haefner, C; Wattellier, B & Barty, C J. Optical switching and contrast enhancement in intense laser systems by cascaded optical parametric amplification, article, September 6, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc892703/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.