Accession Number : AD0667948

Title :   AN ANALYSIS OF SINGLE MODE OPERATION OF GAS LASERS.

Descriptive Note : Technical rept.,

Corporate Author : HARRY DIAMOND LABS WASHINGTON D C

Personal Author(s) : Young,R. T. , Jr

Report Date : DEC 1967

Pagination or Media Count : 27

Abstract : An approximate higher order theory is applied to the single mode operation of gas lasers at both low and high power levels. Three cases are worked out: (a) Uniform field, uniform excitation; (b) Finite circular plane mirrors and a Bessel function radial variation of excitation; (c) Confocal mirrors. It is shown that there are two regimes of operation: output power varies with the square of the excitation rate, and output power is a linear function of the excitation rate. The quadratic type of operation occurs either for low power, or small ratio of atomic linewidth to Doppler bandwidth; the linear type for either high power or large ratio of linewidth to Doppler bandwidth. Two representative cases, a He-Ne laser and an Ar+ laser, are treated, and the results are compared with experimental data. (Author)

Descriptors :   (*GAS LASERS, OPERATION), HELIUM, NEON, ARGON, ATOMIC ENERGY LEVELS, IONS, EXCITATION, FIELD THEORY, BESSEL FUNCTIONS, MIRRORS, DOPPLER EFFECT, BANDWIDTH, ELECTROMAGNETIC FIELDS, PHASE, INFRARED RADIATION, RESONANCE ABSORPTION, TEST METHODS, EXPERIMENTAL DATA, PERFORMANCE(ENGINEERING)

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE