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Title: Pulse contrast enhancement via non-collinear sum-frequency generation with the signal and idler of an optical parametric amplifier

Abstract

We outline an approach for improving the temporal contrast of a high-intensity laser system by >8 orders of magnitude using non-collinear sum-frequency generation with the signal and idler of an optical parametric amplifier. We demonstrate the effectiveness of this technique by cleaning pulses from a millijoule-level chirped-pulse amplification system to provide >10 12 intensity contrast relative to all pre-pulses and amplified spontaneous emission >5 ps prior to the main pulse. The output maintains percent-level energy stability on the time scales of a typical user experiment at our facility, highlighting the method's reliability and operational efficiency. After temporal cleansing, the pulses are stretched in time before seeding two multi-pass, Ti:sapphire-based amplifiers. After re-compression, the 1 J, 40 fs (25 TW) laser pulses maintain a >10^10 intensity contrast >30 ps prior to the main pulse. This technique is both energy-scalable and appropriate for preparing seed pulses for a TW- or PW-level chirped-pulse amplification laser system.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
OSTI Identifier:
1515838
Alternate Identifier(s):
OSTI ID: 1525336
Grant/Contract Number:  
AC02-76SF00515; SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 114; Journal Issue: 22; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Cunningham, Eric, Galtier, Eric, Dyer, Gilliss, Robinson, Joseph, and Fry, Alan. Pulse contrast enhancement via non-collinear sum-frequency generation with the signal and idler of an optical parametric amplifier. United States: N. p., 2019. Web. doi:10.1063/1.5108911.
Cunningham, Eric, Galtier, Eric, Dyer, Gilliss, Robinson, Joseph, & Fry, Alan. Pulse contrast enhancement via non-collinear sum-frequency generation with the signal and idler of an optical parametric amplifier. United States. doi:10.1063/1.5108911.
Cunningham, Eric, Galtier, Eric, Dyer, Gilliss, Robinson, Joseph, and Fry, Alan. Fri . "Pulse contrast enhancement via non-collinear sum-frequency generation with the signal and idler of an optical parametric amplifier". United States. doi:10.1063/1.5108911.
@article{osti_1515838,
title = {Pulse contrast enhancement via non-collinear sum-frequency generation with the signal and idler of an optical parametric amplifier},
author = {Cunningham, Eric and Galtier, Eric and Dyer, Gilliss and Robinson, Joseph and Fry, Alan},
abstractNote = {We outline an approach for improving the temporal contrast of a high-intensity laser system by >8 orders of magnitude using non-collinear sum-frequency generation with the signal and idler of an optical parametric amplifier. We demonstrate the effectiveness of this technique by cleaning pulses from a millijoule-level chirped-pulse amplification system to provide >1012 intensity contrast relative to all pre-pulses and amplified spontaneous emission >5 ps prior to the main pulse. The output maintains percent-level energy stability on the time scales of a typical user experiment at our facility, highlighting the method's reliability and operational efficiency. After temporal cleansing, the pulses are stretched in time before seeding two multi-pass, Ti:sapphire-based amplifiers. After re-compression, the 1 J, 40 fs (25 TW) laser pulses maintain a >10^10 intensity contrast >30 ps prior to the main pulse. This technique is both energy-scalable and appropriate for preparing seed pulses for a TW- or PW-level chirped-pulse amplification laser system.},
doi = {10.1063/1.5108911},
journal = {Applied Physics Letters},
number = 22,
volume = 114,
place = {United States},
year = {2019},
month = {6}
}

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