Device for frequency modulation of a laser output spectrum
Patent
·
OSTI ID:5836617
A device is provided for fast frequency modulating the output spectrum of multimode lasers and single frequency lasers that are not actively stabilized. A piezoelectric transducer attached to a laser cavity mirror is driven in an unconventional manner to excite resonance vibration of the tranducer to rapidly, cyclicly change the laser cavity length. The result is a cyclic sweeping of the output wavelength sufficient to fill the gaps in the laser output frequency spectrum. When a laser is used to excite atoms or molecules, complete absorption line coverage is made possible.
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Dept. of Energy
- Patent Number(s):
- None
- Application Number:
- ON: DE85011634
- OSTI ID:
- 5836617
- Country of Publication:
- United States
- Language:
- English
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