Abstract
A compact forward-directed
transmissive beam scanner
operating at a wavelength of 1550 nm was constructed and
characterized. The scanner consists of two wire-grid polarizers (WGPs)
surrounding a 45° Faraday rotator, causing incident light to reflect
once from each WGP before transmitting through the second polarizer.
Scanning is achieved by tilting one of the WGPs. Measured efficiency
remained above 73% over a 90° forward scan range (−45∘ to +45∘) for vertically polarized incident
light. Additionally, we measured the efficiency versus beam deflection
for four different incident linear polarization configurations, three
of which maintained >70% efficiency for deflection angles up
to −60∘.
Funder
Air Force Research
Laboratory