Dual-band antireflection coatings for the infrared

Thomas D. Rahmlow Jr.; Jeanne E. Lazo-Wasem; Scott Wilkinson; Flemming Tinker

doi:10.1117/12.780288

15 April 2008 Dual band antireflection coatings for the infrared

Thomas D. Rahmlow Jr., Jeanne E. Lazo-Wasem, Scott Wilkinson, Flemming Tinker

Proceedings Volume 6940, Infrared Technology and Applications XXXIV; 69400T (2008) https://doi.org/10.1117/12.780288
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

Sensor performance for dual band forward looking infrared (FLIR) imagers can be substantially improved by increased simultaneous throughput of both sensor bands in the optical systems. Currently available antireflection coatings (ARs) have optimized performance for either spectral band, but not both on the same optic. Where AR coatings cover the mid and long wave infrared (LWIR) bands, or the entire broad band spectrum from visible to LWIR, performance is not sufficient for future systems. A method of designing and fabricating high performance ARs has been developed. This paper presents a discussion of the trade-off of film thickness and complexity versus transmission performance. Fabrication results for high, medium and low index lens materials are also presented.

Citation Download Citation

Thomas D. Rahmlow Jr., Jeanne E. Lazo-Wasem, Scott Wilkinson, and Flemming Tinker "Dual band antireflection coatings for the infrared", Proc. SPIE 6940, Infrared Technology and Applications XXXIV, 69400T (15 April 2008); https://doi.org/10.1117/12.780288

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