Characterization and application of a LED-driven integrating sphere source

Leibo Ding; Elena M. Georgieva; James J. Butler; John W. Cooper; Georgi T. Georgiev; Gilbert R. Smith

doi:10.1117/12.2191371

11 September 2015 Characterization and application of a LED-driven integrating sphere source

Leibo Ding, Elena M. Georgieva, James J. Butler, John W. Cooper, Georgi T. Georgiev, Gilbert R. Smith

Proceedings Volume 9607, Earth Observing Systems XX; 96070Y (2015) https://doi.org/10.1117/12.2191371
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

A Light-Emitting Diode (LED)-driven integrating sphere light source has been fabricated and assembled in the NASA Goddard Space Flight Center (GSFC) Code 618 Biospheric Sciences Laboratory’s Calibration Facility. This light source is a 30.5 cm diameter integrating sphere lined with Spectralon. A set of four LEDs of different wavelengths are mounted on the integrating sphere’s wall ports. A National Institute of Standards and Technology (NIST) characterized Si detector is mounted on a port to provide real-time monitoring data for reference. The measurement results presented here include the short-term and long-term stability and polarization characterization of the output from this LED-driven integrating sphere light source. As an initial application, this light source is used to characterize detector/pre-amplifier gain linearity in light detection systems. The measurement results will be presented and discussed.

Citation Download Citation

Leibo Ding, Elena M. Georgieva, James J. Butler, John W. Cooper, Georgi T. Georgiev, and Gilbert R. Smith "Characterization and application of a LED-driven integrating sphere source", Proc. SPIE 9607, Earth Observing Systems XX, 96070Y (11 September 2015); https://doi.org/10.1117/12.2191371

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