We have packaged a rectangular 3 mm × 4 mm, 10-μm-thick Z-cut lithium niobate (LiNbO<sub>3</sub>) 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-μm-thick LiNbO<sub>3</sub> plate and describe the detectors' spatial uniformity and noise-equivalent power.
© 2000 Optical Society of America
John H. Lehman, Antonije M. Radojevic, Richard M. Osgood, Miguel Levy, and Chris N. Pannell, "Fabrication and evaluation of a freestanding pyroelectric detector made from single-crystal LiNbO3 film," Opt. Lett. 25, 1657-1659 (2000)