Compact pulsed gas transport laser

Details Compact pulsed gas transport laser Compact pulsed gas transport laser

1979-07-16

1981-01-13

Sikes, William L.

Oscillators

Molecular or particle resonant type

331 945C, 331 945G, H01S 311

Patent

active

042451949

ABSTRACT:
A physically compact gas transport laser operable at high pulse rates (greater than 1 kHz) in a high vacuum (greater than 10.sup.-5 Torr) is achieved by flowing the active gas at high velocity (greater than 50 m/sec) between two discharge electrodes in a hermetically sealed housing containing squirrel cage type blowers, a heat exchanger and the laser electrodes. A pulse forming network and blower motors are mounted externally of the housing as is the optical resonator assembly. A central partition divides the housing interior into upper and lower gas flow channels. The blowers are located in the lower channel at the housing end downstream from the electrodes and are rotatable in a plane parallel to the plane of the partition. The heat exchanger is located at the opposite end of the housing and both cools and stabalizes the flow of the circulating gas. The housing is a unitary structure having openings for installation of the blowers, heat exchanger and optical windows, which openings are closed by removable metal-to-metal sealing flanges for permitting access to the housing interior without compromising high vacuum integrity of the system.

REFERENCES:
patent: 3772610 (1973-11-01), Foster et al.
"Performance of a Compact Sealed 200-W CO.sub.2 Laser" by Fahlen, IEEE Quant. Electron., vol. QE-11, pp. 848-849 (Oct. 1975).

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