Acceleration and deformation measurements using coherent laser radar
Abstract
A solid state coherent laser radar system was employed to measure accelerations and/or deformations of metal foils. The foils were ablatively accelerated by a short laser pulse to velocities of approximately 1 km/s. Velocity profiles were determined by digitizing the chirped waveform produced by the target as its velocity changes. This waveform was analyzed to determine the Doppler shift as a function of time. Measured velocity profiles were found to be in good agreement with a simple model of ablative acceleration. Vibrations of the target foils due to the accelerating pulse were also observed.
- Publication:
-
Lasers 1989
- Pub Date:
- 1990
- Bibcode:
- 1990lase.conf..644R
- Keywords:
-
- Accelerometers;
- Laser Doppler Velocimeters;
- Optical Radar;
- Radar Measurement;
- Deformation;
- Laser Targets;
- Metal Foils;
- Vibration Measurement;
- Instrumentation and Photography