Chirp Measurements Of A Ten Joule Pulsed CO[sub]2[/sub] Oscillator

Ethan D. Hoag

doi:10.1117/12.951264

28 July 1989 Chirp Measurements Of A Ten Joule Pulsed CO₂ Oscillator

Ethan D. Hoag

Proceedings Volume 1042, CO2 Lasers and Applications; (1989) https://doi.org/10.1117/12.951264
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

Chirp measurements have been conducted on the pulsed output of an unstable resonator oscillating on the P20 line of the 10.6 micron band of an e-beam sustained CO₂ gain medium. A heterodyne method was used, mixing the oscillator signal with a cw laser operating on the same line. The mode volume was approximately 5 liters at a pressure between 1/3 and 1/2 atm. The measurements were conducted at pulse lengths of the order of 20 microseconds and are useful in characterizing the device for use in radar applications. Chirp values of less than 1 MHz are observed during the first 10 μ sec, in the remainder of the pulse, values of several MHz are observed, with decreasing frequency.

Citation Download Citation

Ethan D. Hoag "Chirp Measurements Of A Ten Joule Pulsed CO₂ Oscillator", Proc. SPIE 1042, CO2 Lasers and Applications, (28 July 1989); https://doi.org/10.1117/12.951264

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