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-microsecond 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 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 that the pulse-to-pulse standard deviation of the beat frequency is + or - 500 kHz, the long-term drift being controlled by the stabilization system. Measurements of the beat frequency during the pulse show a frequency sweeping (chirp) of about 1.7 MHz microsecond 2 during the pulse tail.
Report Number
DREV-4130/79 —
Date of publication
15 May 1979
Number of Pages
21
DSTKIM No
79-02026
CANDIS No
86376
Format(s):
Originator's fiche received by DSIS;Hardcopy

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