Chirp laser stabilization system
A chirp modulated laser transmitter system is described comprising: a transmitter laser having an output with a nominal amplitude at a nominal center frequency of oscillation; intracavity electro-optical crystal means for varying the output frequency of the transmitter laser from the nominal center frequency in response to a driving signal; chirp modulation driver means for driving the electro-optical crystal at a relatively high frequency above 10 kilohertz to linearly shift the output of the laser above and below the center frequency; means for detecting asymmetry in the amplitude of the output of the laser as it is shifted in frequency above and below the nominal center frequency thereof; the transmitter laser including an adjustable mirror at one end thereof; and means for varying the position of the adjustable mirror to shift the center frequency of the transmitter laser, in response to detected asymmetry in the amplitude of the output of the detecting means, to minimize the asymmetry and thereby stabilize the laser center frequency substantially at the frequency providing maximum output power.
- Assignee:
- Hughes Aircraft Company, Los Angeles, CA
- Patent Number(s):
- US 4660206
- OSTI ID:
- 6535788
- Country of Publication:
- United States
- Language:
- English
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