Phased-Array Monolithic PEM for FT Spectrometry With Applications in Explosive Detection and CB Defense
SEMIOTIC ENGINEERING ASSOCIATES LLC ALBUQUERQUE NM
Pagination or Media Count:
We present the theory and multiphysics simulation of a novel type of photoelastic modulator PEM for use in ultra-high performance FT spectrometers with applications in the optical recognition of explosives and CB warfare agents. This new technology is based on the strain birefringence induced along a bar-shaped optical element by a phased array of piezoelectric transducers PZT. Appropriate phase and amplitude relationships among the array PZTs ensure that induced birefringence oscillations add constructively and result in high total retardation. When used in PEMFT spectrometers Buican, 2006 Buican and Carrieri, 2004, 2006, monolithic virtualstack phased-array VSPA PEMs Buican 2008 will provide ultra-high scan rates to 105 interferogramss broad spectral range high spectral resolution and high light throughput.
- Miscellaneous Detection and Detectors