LUMINOUS ELEMENT AND LUMINOUS ELEMENT MODULE

摘要

A luminous element having a substrate transparent to an emission wavelength, and an active layer structure formed on the substrate, characterized in that the substrate is up to 75 mu m thick, and/or a layer for restricting the modulation of an oscillation intensity in a guide mode originated by the substrate is formed between the substrate and the active layer structure. The luminous element restricts an intensity modulation for an oscillation wavelength involving a substrate-originated guide mode which is recognized when the substrate is transparent to an emission wavelength, and delivers an excellent optical output linearity and coupling characteristics with respect to an external resonator.