Comparison among illumination options for SWIR sensors

Jean Orr; Mayra Sarmiento; Jonathan Steckel

doi:10.1117/12.3001785

12 March 2024 Comparison among illumination options for SWIR sensors

Jean Orr, Mayra Sarmiento, Jonathan Steckel

Author Affiliations +

Proceedings Volume 12866, Components and Packaging for Laser Systems X; 128660B (2024) https://doi.org/10.1117/12.3001785
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

Feasibility of various illumination sources for a SWIR sensor was explored: Edge Emitting Laser (EEL), Vertical Cavity Surface Emitting Laser (VCSEL), and Light Emitting Diode (LED) were evaluated in terms of level of optical power, optical power variation over temperature and image quality. The highest optical power was measured from the EEL, while the LED showed the best images quality: LED ⪆ VCSEL ⪆ EEL, because of the spatial incoherency of LED as well as the lack of optimization of the EEL diffuser. Emission wavelength variation with temperature requires the use of long pass filtering of the illumination sources. If an application needs a narrow band pass filter, the temperature should be controlled. A combination of numerical, graphical, and actual images will be presented to compare the performance of the devices under study.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jean Orr, Mayra Sarmiento, and Jonathan Steckel "Comparison among illumination options for SWIR sensors", Proc. SPIE 12866, Components and Packaging for Laser Systems X, 128660B (12 March 2024); https://doi.org/10.1117/12.3001785

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