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

Brendan McAndrew; Joel McCorkel

doi:10.1117/12.2530295

9 September 2019 Time resolved irradiance of an integrating sphere illuminated by a mode-locked optical parametric oscillator

Brendan McAndrew, Joel McCorkel

Author Affiliations +

Proceedings Volume 11127, Earth Observing Systems XXIV; 111270K (2019) https://doi.org/10.1117/12.2530295
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

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.

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Citation Download Citation

Brendan McAndrew and Joel McCorkel "Time resolved irradiance of an integrating sphere illuminated by a mode-locked optical parametric oscillator", Proc. SPIE 11127, Earth Observing Systems XXIV, 111270K (9 September 2019); https://doi.org/10.1117/12.2530295

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