linear amamplitude grating
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- mode pattern
- optical harmonic generation
- optical head controllers,control ics/modules
- frequency summing
- Varotal lens
- infra-red beam folower
- optical deformation
- diatomic roto
- visible emissivity
- filters
- multilongitudianl-mode laser
- metacrystalline
- chronophotography
- push out
- upper state relaxation
- intensifying screen
- time-averaged shadow-moire method
- astrospectrograph camera
- geometrical focus
- holographic gratings