Gain and saturation parameter of a waveguide laser with distributed losses
P. E. Dubovskiĭ,
È. N. Lotkova,
D. I. Ponomarev,
N. N. Sobolev
Abstract:
An analysis is made of the problem of allowance for distributed losses
αd in a gas-discharge waveguide laser when a determination is made of the gain
g0 and of the saturation parameter
Is from the output power
P. Comparisons are made of the values of
g0 and
Is for a carbon monoxide waveguide laser, found experimentally by the method of calibrated losses allowing for and ignoring
αd. A description is given of the method for the determination of
g0 of a waveguide laser by a probe laser (which eliminates the influence of
αd) and the results are given for the 1846.9 cm
–1 line of the CO molecule. It is shown that when
g0 and
Is are calculated from the measured values of
P, an allowance must be made for
αd because otherwise the results are overestimated. Measurements are reported of the values of
P obtained for CO waveguide lasers with capillaries of different lengths and a comparison is made between the experimental data and those calculated allowing for the values of
αd.
UDC:
621.373.826.036.823
PACS:
42.55.Lt,
42.60.Lh,
42.60.Jf,
42.50.Gy Received: 27.07.1984