Measurement Error of Small Signal Gain and Saturation Parameter in Amplifying Medium with Radial Distribution

Abstract

The measurement errors of small signal gain g0 and saturation parameter Is were analysed using a computer simulation for an amplifying medium with radial distribution. The beam distortion taking place in such a was found to cause considerable errors in the values of g0 and Is obtained using the equationIn G=g0L-1/Is (G-1) IinIn the case of a CO2 waveguide laser of 2 mmφ bore and 10 cm discharge length, the error amounts to as high as 18% for g0 and the latter 25% for Is. The errors estimated in this paper can be used for correcting the measured values of g0 and Is.