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

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