Visible/long-wave infrared dichroic beamsplitter

Ronald A. Ferrante; Timothy W. Rand; Robert A. Cabrera; Mark A. Paloian

doi:10.1117/1.1927107

1 June 2005 Visible/long-wave infrared dichroic beamsplitter

Ronald A. Ferrante, Timothy W. Rand, Robert A. Cabrera, Mark A. Paloian

Author Affiliations +

Optical Engineering, Vol. 44, Issue 6, 063801 (June 2005). https://doi.org/10.1117/1.1927107

Abstract

Visible/long-wave infrared (LWIR) beamsplitter optical elements are designed, fabricated, and tested to enable implementation of a single common-aperture dual-spectral-mode imaging sensor system. The coating design is compatible with both germanium and low-cost electronic-grade silicon wafer substrates. Multispectral transmission and reflection efficiencies averaging over 90% are measured over both the visible to near IR (NIR) and the LWIR spectral regions, in agreement with theoretical models. The coating design uses commercial-off-the-shelf (COTS) coating materials known to exhibit excellent mechanical and environmental stability for performance reliability and extended operational lifetime.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Ronald A. Ferrante, Timothy W. Rand, Robert A. Cabrera, and Mark A. Paloian "Visible/long-wave infrared dichroic beamsplitter," Optical Engineering 44(6), 063801 (1 June 2005). https://doi.org/10.1117/1.1927107

Published: 1 June 2005

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