Long cavity laser system including frequency doubling long cavit

Details Long cavity laser system including frequency doubling long cavit Long cavity laser system including frequency doubling long cavit

1997-06-27

1999-10-12

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Nonlinear device

372 93, 372 6, 372 27, 372 92, 372108, H01S 310

Patent

active

059663910

ABSTRACT:
A polarization controlled laser system receiving a pump laser beam includes a long laser cavity for precluding mode hopping. Preferably, the long laser cavity is defined by first and second dichroic reflectors, a rare earth doped optical fiber disposed between the first and second dichroic reflectors for amplifying the pump laser beam to thereby produce an amplified laser beam, a polarization controller for controlling polarization of the amplified laser beam, and a polarization selector for selecting the polarization of the amplified laser beam. The polarization selector can include a polarizing optical fiber while the polarization controller advantageously may include a polarization maintaining optical fiber. Alternatively, the rare-earth doped optical fiber, the polarization controller, and the polarization selector are all formed from a single polarizing rare-earth doped optical fiber. The polarization controlled laser system may be converted to a frequency doubled polarization controlled laser system by adding a doubling crystal to the long laser cavity. Methods for generating polarization controlled laser beams using a long laser cavity formed from a rare-earth doped optical fiber are also described.

REFERENCES:
patent: 5497386 (1996-03-01), Fontana
patent: 5504771 (1996-04-01), Vahala et al.

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