Spectroscopy characteristics of quasi three level laser transition induced by flashlamp pumped ND:YAG laser

Abstract

Laser transition at 946 nm from flashlamp pumped Nd:YAG crystal is investigated. The fluorescence radiation induced after pumping is observed via spectrometer. The spectra comprised of absorption and emission lines. The optimum absorption fluorescence is found to be at thermal boosted line of 882 nm. This is an indicator of less heat generation involve in the laser transition. This is confirmed by the generation quasi three level transition at 946 nm. The stimulated emission cross section of 946 nm is estimated to be three times greater than that reported by previous researcher.