Coherent light generators – Particular resonant cavity – Mirror support or alignment structure
Patent
1992-10-01
1994-10-18
Bovernick, Rodney B.
Coherent light generators
Particular resonant cavity
Mirror support or alignment structure
372 35, 372 93, 372103, 359845, H01S 3086, H01S 304, G02B 510
Patent
active
053575393
ABSTRACT:
A laser oscillator comprising a laser resonator having a plurality of mirrors for directing the laser energy from source to exit apertures, the mirrors being constructed and mounted adjustably for reducing parasitic oscillations. The mirrors are mounted in adjusting members that have channels therein for coolant and are provided with heat insulating members that minimize heat gradients and unwanted heat transfers that may result in the distortion of the reflecting surfaces. In addition, the mirrors are angled so that light paths are defined that present a Z-shaped turning pattern. Apertures proximate to the mirrors through which the light beams are directed are offset from a common plane so that a reflective surface is not within the aperture of the opposing reflective surface. One or more of the apertures can be so offset to reduce the possibility of parasitic oscillations. Further, the reflectors can be angled and the apertures sized so as to eliminate parasitic oscillations.
REFERENCES:
patent: 3904983 (1975-09-01), Moreno et al.
patent: 4672626 (1987-06-01), Koseki
patent: 4760581 (1988-07-01), Hoag
patent: 4872179 (1989-10-01), Nitsche et al.
Endo Tetuya
Kuzumoto Masaki
Nishida Satoshi
Otani Akihiro
Bovernick Rodney B.
McNutt Robert
Mitsubishi Denki & Kabushiki Kaisha
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