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