Optical switching and contrast enhancement in intense laser systems by cascaded optical parametric amplification
Journal Article
·
· Optics Letters
OSTI ID:883595
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.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 883595
- Report Number(s):
- UCRL-JRNL-215289
- Journal Information:
- Optics Letters, Journal Name: Optics Letters Journal Issue: 6 Vol. 31; ISSN 0146-9592; ISSN OPLEDP
- Country of Publication:
- United States
- Language:
- English
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