Abstract
We have packaged a rectangular 3 mm x 4 mm, 10-mum-thick Z-cut lithium niobate (LiNbO(3)) film produced by crystal ion slicing (CIS) and evaluated its performance as a pyroelectric optical detector. We justify the difficulty of preparing the film by showing that the freestanding detector has much greater sensitivity than the same detector bonded to a substrate. We compare the sensitivity of three CIS-film detectors with that of a detector based on a 230-mum-thick LiNbO(3) plate and describe the detectors' spatial uniformity and noise-equivalent power.
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