Accession Number : AD0433961


Title :   GASEOUS OPTICAL MASERS


Descriptive Note : Rept. for May 1962-Nov 1963


Corporate Author : WATKINS-JOHNSON CO PALO ALTO CA


Personal Author(s) : Sobottka, S E ; Met, V


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/433961.pdf


Report Date : Dec 1963


Pagination or Media Count : 81


Abstract : Studies were made of basic processes operating in He-Ne lasers with emphasis on acquiring information related to techniques for increasing the output powers. It was found that the population of the upper maser level for the 6328A and 1.15 micron transitions saturates with increasing electron density or energy as is predicted for excitation by resonance transfer from He metastables. The population of the lower maser level for the 6328A transition does not saturate so that the laser output power, as a function of electron density, increases to a maximum and then decreases to zero. Excitation to the lower maser level or to any level directly excitated by electron collisions is much more effective with pulsed currents (having large average electron energies) than for dc currents.


Descriptors :   *LASERS , ATOMIC ENERGY LEVELS , DISCHARGE TUBES , ELECTRON DENSITY , EXCITATION , GAS DISCHARGES , GASES , HELIUM , MEASUREMENT , NEON , PARAMAGNETIC RESONANCE , POWER , SPECTROPHOTOMETERS , THEORY


Subject Categories : Lasers and Masers


Distribution Statement : APPROVED FOR PUBLIC RELEASE