Coherent light generators – Particular beam control device – Tuning
Patent
1991-04-12
1992-04-21
Epps, Georgia
Coherent light generators
Particular beam control device
Tuning
372105, H01S 310
Patent
active
051075091
ABSTRACT:
A tunable solid state laser for producing a laser emission at any desired w or high laser gain transition in a predetermined range of wavelengths is disclosed. The tunable solid state laser comprises: a laser cavity defined by a first reflective element and an output coupler reflective element to form a reflective path therebetween; a laser crystal disposed in the laser cavity; means for optically exciting the laser crystal to produce a laser emission in the predetermined range of wavelengths; a tunable element disposed in the laser cavity between the laser crystal and one of the reflective elements for tuning the laser emission to any desired laser transition in the predetermined range of wavelengths; and a plurality of optical plates oriented at Brewster's angle in the reflective path in the laser cavity for suppressing oscillation of undesired wavelengths within the laser cavity, the optical plates being transparent to the laser emission over the predetermined range of wavelengths. The tunable solid state laser can further include an aperture disposed in the reflective path in the laser cavity to allow the laser to lase in the laser cavity only at the lowest order spatial transverse mode of the desired wavelength in the predetermined range of wavelengths.
REFERENCES:
patent: 4068190 (1978-01-01), Ferguson
patent: 4689794 (1987-08-01), Brosnan
patent: 4914664 (1990-04-01), Woodward
patent: 4969150 (1990-11-01), Esterowitz et al.
Esterowitz Leon
Pinto Joseph F.
Quarles Gregory J.
Epps Georgia
Jameson George
McDonnell Thomas E.
The United States of America as respresented by the Secretary of
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