Infrared fiber coupled acousto-optic tunable filter spectrometerA spectrometer design is introduced which combines an acoustooptic tunable filter (AOTF) and IR-transmitting flouride-glass fibers. The AOTF crystal is fabricated from TeO2 and permits random access to any wavelength in less than 50 microseconds, and the resulting spectrometer is tested for the remote analysis of gases and hydrocarbons. The AOTF spectrometer, when operated with a high-speed frequency synthesizer and optimized algorithms, permits accurate high-speed spectroscopy in the mid-IR spectral region.
Document ID
19910067246
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Levin, K. H. (Infrared Fibers Systems, Inc. Silver Spring, MD, United States)
Kindler, E. (Infrared Fibers Systems, Inc. Silver Spring, MD, United States)
Ko, T. (Infrared Fibers Systems, Inc. Silver Spring, MD, United States)
Lee, F. (Infrared Fibers Systems, Inc. Silver Spring, MD, United States)
Tran, D. C. (Infrared Fiber Systems Silver Spring, MD, United States)
Tapphorn, R. M. (NASA White Sands Test Facility; Lockheed Engineering and Sciences Co. Las Cruces, NM, United States)