Coherent light generators – Particular beam control device – Nonlinear device
Patent
1991-05-01
1993-01-05
Davie, James W.
Coherent light generators
Particular beam control device
Nonlinear device
372 93, 372105, H01S 310
Patent
active
051777517
ABSTRACT:
Disclosed is a laser apparatus having an optical pumping source, first and second resonator mirrors, a laser medium provided on a light route between the first and second resonator mirrors, an optical system provided in a light route between the laser medium and the second resonator mirror; and a nonlinear optical crystal for generating through wavelength conversion a higher harmonic wave(s) from a fundamental wave of laser generated by the laser medium. The nonlinear optical crystal is capable of being inserted between the intermediate optical system and the second resonator mirror. The second resonator mirror is a concave mirror. The intermediate optical system is constituted by a single concave mirror reflecting the fundamental wave and transmitting the higher harmonic wave(s). The intermediate optical system may also be constituted by a single plane mirror reflecting the fundamental wave and transmitting the higher harmonic wave(s), and an intermediate concave mirror reflecting light reflected from the plane mirror to the second resonator mirror and reflecting light reflected from the second resonator mirror to the plane mirror, and the nonlinear optical crystal is capable of being inserted between the intermediate concave mirror and second resonator mirror. Cooling structure for an optical pumping source is also disclosed.
REFERENCES:
patent: 3949323 (1976-04-01), Bierlein et al.
patent: 4048515 (1977-09-01), Liu
patent: 5056103 (1991-10-01), Alfrey et al.
Walter Koechner "Solid-State Laser Engineering," Springer Series in Optical Sciences, Springer-Verlag, pp. 504-518.
Kanai Yoshikazu
Kobayashi Kuniaki
Sugiyama Seiji
Tsunoda Tatsuo
Davie James W.
Leonix Corporation
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