A gigawatt CO2 laser with telescopic amplifier

Details A gigawatt CO2 laser with telescopic amplifier A gigawatt CO2 laser with telescopic amplifier

Apr 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jap....47.1295l&link_type=abstract

Journal of Applied Physics, vol. 47, Apr. 1976, p. 1295-1298.

Physics

Optics

2

Carbon Dioxide Lasers, Light Amplifiers, Reflecting Telescopes, Tea Lasers, Ultrashort Pulsed Lasers, Cassegrain Optics, Laser Outputs, Laser Windows, Efficiency, Stability, Gain, And Other Operational Parameters

Scientific paper

A triple-pass TEA CO2 telescopic laser amplifier has been developed with an energy gain of 1000 for millijoule laser pulses of about 1 ns in duration. The device has been used to generate pulses with a minimum width of 0.8 ns and 1 GW peak power (total energy 1 J) from an active length of 1 m for an input power of 1 MW. The amplifier design ensures optimum energy extraction and eliminates self-oscillation due to optical feedback from diffraction at the edges of the telescope apertures. Parasitic oscillations in the amplifier are overcome by minimizing the specular and diffuse reflection from the window and mirror mounts.

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