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This content will become publicly available on August 17, 2018

Title: Absolute calibration of optical streak cameras on picosecond time scales using supercontinuum generation

Here we report a new method using high stability, laser-driven supercontinuum generation in a liquid cell to calibrate the absolute photon response of fast optical streak cameras as a function of wavelength when operating at fastest sweep speeds. A stable, pulsed white light source based around the use of self-phase modulation in a salt solution was developed to provide the required brightness on picosecond timescales, enabling streak camera calibration in fully dynamic operation. The measured spectral brightness allowed for absolute photon response calibration over a broad spectral range (425-650nm). Calibrations performed with two Axis Photonique streak cameras using the Photonis P820PSU streak tube demonstrated responses which qualitatively follow the photocathode response. Peak sensitivities were 1 photon/count above background. The absolute dynamic sensitivity is less than the static by up to an order of magnitude. We attribute this to the dynamic response of the phosphor being lower.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [3] ;  [1] ;  [5] ;  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); AWE, Aldermaston, Reading, Berkshire (United Kingdom); Imperial College, London (United Kingdom). Blackett Lab.
  3. Imperial College, London (United Kingdom). Blackett Lab.
  4. AWE, Aldermaston, Reading, Berkshire (United Kingdom)
  5. First Light Fusion, Kidlington (United Kingdom)
Publication Date:
Report Number(s):
LLNL-JRNL-732138
Journal ID: ISSN 1559-128X; APOPAI
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Applied Optics
Additional Journal Information:
Journal Volume: 56; Journal Issue: 24; Journal ID: ISSN 1559-128X
Publisher:
Optical Society of America
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Optical instruments; Supercontinuum generation; Detectors; Photodetectors
OSTI Identifier:
1389936
Alternate Identifier(s):
OSTI ID: 1375275