Spectral, space–energy, and polarization characteristics of laser diodes with lasing wavelengths of 530 nm

The characteristics of laser diodes (LDs) with quantum-well (QW) InGaN layers with lasing wavelengths of 530 nm are studied experimentally. It is shown that the LD radiation contrast at the initial phase of operation is quite low (it does not exceed 0.85). It is found that the time dependences of radiation contrast and spectrum become apparent after just 300 h of operation, and the radiation power starts to fall after 1200–1300 h of operation.