FREQUENCY CHARACTERISTICS OF A MINIATURE TRANSVERSELY EXCITED CO2 LASER

Authors
  1. Pace, P.
  2. Lacombe, M.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
A small, single-frequency TE-CO2 laser has been constructed and operated under sealed conditions. Measurements indicate that an output energy of 15 mJ is obtained in a 45-ns (FWHM) 100-kW pulse followed by a 2-mu s-long tail. Single-longitudinal-mode operation was obtained by the insertion of a 7.5 mm diameter iris into an 18-cm-long cavity. The discharge volume was 10 mm x 10 mm x 100 mm. The frequency of the laser was controlled by locking it to a reference CW local oscillator using a computing-counter controlled feedback technique. Results of the experiments indicate the pulse-to-pulse standard deviation of the beat frequency to be + or - 500 kHz, the long term drift being cntrolled by the stabilization system. Measurements of the beat frequency during the pulse indicate a frequency sweeping, 'chirp', of about 1.7 MHz square mu s during the pulse tail.
Date of publication
01 Jan 1979
Number of Pages
6
Reprinted from
Can J of Physics, vol 57, no 9, 1979, p 1350-1355
DSTKIM No
79-03507
CANDIS No
87832
Format(s):
Originator's fiche received by DSIS;Hardcopy

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