Measurement of Temperatures in a Shock Tube by Coherent Antistokes Raman Spectroscopy (CARS),
HOCHSCHULE DER BUNDESWEHR MUNICH (GERMANY F R)
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To measure temperatures behind the shock wave the coherent anti-Stokes Raman spectroscopy CARS was applied. The optical setup consists of a frequency-doubled, Q-switched Nd-Yag laser, a narrow-band, pulsed dye laser, a colinear optical system and an optical multichannel analyser for recording the scattered CARS beam. The double-diaphragm shock tube is operated with helium and with air as driver gas and air as test gas.