Frequency doubled, cavity dumped feedback laser
This patent describes an apparatus for efficient frequency doubling while cavity dumping a pumped laser in a resonator cavity in order to produce modulated output light pulses. The apparatus consists of: a laser having a pumped gain medium in the resonator cavity for emitting light at a first frequency on a fixed axis between two mirrors, modulating means placed between one of the two mirrors and the gain medium for deflecting light in the resonant cavity along a path at a fixed angle with respect to the fixed axis between the two mirrors in response to a cavity-dumping control signal, a third mirror placed to receive resonant cavity light deflected by the modulating means, and to redirect it back on the same path, frequency doubling means placed in the deflected light path between the modulating means and the third mirror, and beamsplitting means placed between the frequency doubling means and the modulating means for separating out frequency doubled light as a modulated output pulse, and passing undoubled frequency light through the modulating means and the gain medium, whereby light in the resonator cavity between the two mirrors experiences cavity dumping and frequency doubling while transmitting a modulated pulse of light reflected from the third mirror and redirection of undoubled frequency light into the resonator cavity while transmitting the modulated pulse of light for greater efficiency.
- Assignee:
- California Institute of Technology, Pasadena, CA
- Patent Number(s):
- US 4841528
- OSTI ID:
- 5552298
- Resource Relation:
- Patent File Date: 6 Sep 1988
- Country of Publication:
- United States
- Language:
- English
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