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