A laser arrangement, and particularly a gas laser, has resonator means contained in a housing or enclosure and mounted therein by yieldable, vibration-dampening means in a manner to mechanically isolate the resonator with respect to the housing so that shifting or expansion of the housing during a warm-up period will not disturb or effect the dimensioning or spacing of reflectors forming a portion of the resonator means. Also, any misalignment of a gas laser tube relative to the resonator reflec...

A TEA gas laser operated by condenser discharge of substantially more than 30 kilovolts directly across a multiplicity of pin electrodes and opposing electrode means to increase uniformity of the shower discharges therebetween and drastically reduce bright arc occurrences while exciting a greater volume of gas per pin and allowing a pin current of up to 10 amperes per pin. In a gas mixture of at least carbon dioxide and helium, less helium is required to sustain the shower discharges, providing ...

A laser mirror has an annular form and a plurality of concentric annular cooling passages internally thereof within about 1/10 inch of the mirror surface thereof. The apparatus has a box-beam rigid construction built around the cooling passages, a cooled inner supporting lip for a central cooperating mirror and a sealing back plate on its rear surface. The apparatus design is tolerant of a wide variety of forces.

A laser phototypesetting system in which a pulsed laser beam is formed into a slit of light which sequentially illuminates portions of a character to form a complete character image. An acousto-optical cell performs the dual functions of deflecting the beam to scan the character with the light slit and intensity-modulating the beam.

A mini-laser package suitable for use as an optical communications oscillator includes a solid state laser and a light pump source emitting in the 7,000 to 9,000 A. region. The laser contains trivalent neodymium as the active ion in a halide host, diluants generally include lanthanum, gadolinium or cerium, trichloride or tribromide.

A room temperature optically pumped solid state laser operating in the 0.8 to 0.9 micron region with inherently low beam divergence enchances covert laser systems because of compatability with high quantum efficiency low noise photocathodes.

A laser gyroscope system which detects frequency shifts in which waves are propagated along a path in opposite directions at different frequencies to minimize interaction between the waves with frequency separation of the waves maintained by both reciprocal and nonreciprocable polarization dispersion in which frequencies of the two waves propagating in one direction lie between the two frequencies of waves propagating in the opposite direction. Rotation of the system produces shifts in the frequ...

Gas laser assembly including an elongated tube having a mirror mount closing one end of the tube wherein a fitting on the tube end has a circumferentially weakened wall section and wherein the mirror is mounted on the fitting on the opposite side of the weakened wall section from the tube itself so that external application of pressure on the mirror mount will deform the weakened wall section to a sufficient degree to permit accurate adjustment of the mirror relative to the axis of the tube. The...

First and second transmitting stations provide two, parallel, line-of-sight, pulsed beams of infrared energy generated from a solid state source. The (laser) beams are intercepted by corresponding receiving stations. The two line of sight beams are displaced horizontally and vertically from each other; and by orienting the beams along a perimeter to be protected, any invasion of the perimeter is sensed by interruption of the beams. Detection of animals, such as dogs, is negated by logic circuitr...

A laser ophthalmoscope is disclosed comprising a pulse laser the radiation of which passes through a light-guide system and an aiming system so as to be directed to the opthalmologic object which is observed with the help of an illumination system. The light-guide system comprises a light-adding means, a mirror and a rotary focusing element which are sequentially mounted along the path of the laser beam and secured on a body hinge-coupled with the mount of the ophthalmoscope. The illumination sy...