High pulse rate interferometry using a ruby laser and a cordin model 360 camera
This system was originally developed in support of a dynamic diffraction moire effort, but has obvious applications to other types of imaging, interferometry, and high speed optical measurement techniques. The system includes a holographic grade Apollo ruby laser and a Cordin model 330A high speed film camera. The laser has been modified to generate a train of 1 to 100 or more pulses having individual pulse energies of about 40 mJ and a pulse width under 50 ns. The separation between pulses is currently 8 {mu}s, but is expected to soon be reduced to about 1 {mu}s. The laser pulses are synchronized with the framing sync signals from the Cordin camera, so that an individual interferogram is recorded on each of the available frames (a maximum record length of 80 frames is possible). The system is currently configured as a diffraction moire interferometer that illuminates a specimen diffraction grating with a pair of laser beams. The resulting interferograms are recorded using the Cordin camera. The system and the experimental synchronization method are described and some representative experimental data are presented. 1 ref., 5 figs.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls, ID (USA)
- Sponsoring Organization:
- USDOD
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6515394
- Report Number(s):
- EGG-M-90380; CONF-9009248-3; ON: DE91001882
- Resource Relation:
- Conference: 19. international congress on high speed photography and photonics, Cambridge (UK), 16-22 Sep 1990
- Country of Publication:
- United States
- Language:
- English
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