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