Output Power Change Associated with Longitudinal Mode Jumping in Semiconductor Injection Lasers

Abstract
Output power change associated with longitudinal mode jumping in an AlGaAs injection laser has been examined. It has been found that the power level for a shorter wavelength mode is higher than that for a longer wavelength mode both at hysteretic mode-jumping and at random mode-switching. The results have been interpreted in terms of asymmetric mode coupling in laser diodes.