Accession Number : AD0452584


Title :   A PROPOSED 'TWISTED-MODE' TECHNIQUE FOR OBTAINING SINGLE-AXIAL-MODE OSCILLATION IN A RUBY LASER,


Corporate Author : STANFORD UNIV CA STANFORD ELECTRONICS LABS


Personal Author(s) : Siegman, A E


Report Date : Sep 1964


Pagination or Media Count : 24


Abstract : A proposed technique for obtaining oscillation in a single axial mode in a ruby laser is described and analyzed. The technique involves the use of a quarter-wave plate inside each laser mirror, together with a 0 degree ruby rod. The principal axes of the quarter-wave plates are rotated by 45 degrees with respect to each other. The axial modes in this system have the form of twisted ribbons, with axially uniform transverse E field density. It is believed that this will lead to axially uniform ruby saturation, and hence oscillation in a single axial mode. The general case of arbitrary wave plates at arbitrary angles has also been analysed, and the resulting mode forms and mode spectra are presented. (Author)


Descriptors :   *LASERS , OSCILLATION , RUBY , MIRRORS , STANDING WAVE RATIOS , REFRACTION , POLARIZATION , WAVE PROPAGATION , INSTRUMENTATION


Distribution Statement : APPROVED FOR PUBLIC RELEASE