WHITE-LIGHT IMAGING BY USE OF A MULTIPLE PASSBAND ACOUSTO-OPTIC TUNABLE FILTER

摘要

White-light imaging was accomplished by operation of a TeO2 acousto-optic tunable filter (AOTF) with 40 simultaneous overlapping passbands from 400 to 700 nm. The AOTF was chromatically compensated by a wedge applied to the output surface of the AOTF, and the measured spatial resolution correlated well with predictions. Switching off specific rf's applied to the AOTF produced optical rejection corresponding to the inactive passbands. A rejection ratio of 30 dB was demonstrated, and tile rejection level was found to be controlled by leakage through the sidelobes of adjacent passbands. (C) 1996 Optical Society of America [References: 29]