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Proceedings Paper

Time resolved irradiance of an integrating sphere illuminated by a mode-locked optical parametric oscillator
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Paper Abstract

The Goddard Laser for Absolute Measurement of Radiance (GLAMR) is a transportable calibration facility that provides characterization of spectral and radiometric response of airborne and satellite-based instruments operating in the solarreflective spectral region. In this work, the time resolved output of GLAMR’s integrating sphere coupled with a modelocked source was measured. The 76-cm diameter sphere with 30-cm output aperture was illuminated using a modelocked pulse train at 76 MHz, with single pulse durations of 12 ps. The time constant of the sphere was found to be 36 ns, and the resultant temporal averaging of pulses produced a maximum time varying irradiance at the output of 20% of the mean. A comparison of instrument calibration data generated with this integrating sphere using both a mode-locked source and a continuous-wave source is also given.

Paper Details

Date Published: 9 September 2019
PDF: 7 pages
Proc. SPIE 11127, Earth Observing Systems XXIV, 111270K (9 September 2019); doi: 10.1117/12.2530295
Show Author Affiliations
Brendan McAndrew, NASA Goddard Space Flight Ctr. (United States)
Joel McCorkel, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 11127:
Earth Observing Systems XXIV
James J. Butler; Xiaoxiong (Jack) Xiong; Xingfa Gu, Editor(s)

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