Polarization control and tuning efficiency of tunable vertical-cavity surface-emitting laser with internal-cavity sub-wavelength grating

Wang Xiao-Long, Zou Yong-Gang^†, He Zhi-Fang, Liu Guo-Jun^‡, Ma Xiao-Hui^§

The relationship between threshold gain and different polarization modes for the TE-type tunable VCSEL (a) and the TM-type tunable VCSEL (b).