Continuous wave dual wavelength laser emission from BiVCSEL device

Summary form only given. A bi-vertical-cavity surface-emitting laser (BiVCSEL) containing two identical or slightly detuned cavities can emit two coaxial laser beams at different wavelengths. The two modes will be optically coupled and therefore they will share the same gain regions. Consequently, energy may be transferred from one mode to the other. By detuning the lengths of the cavities, the coupling strength decreases and the short wavelength mode /spl lambda//sub s/ becomes more localized in the shorter cavity, while the long wavelength mode /spl lambda//sub L/ shifts to the longer cavity. Dual wavelength lasing of a BiVCSEL under pulsed injection was previously reported. We present here the cw operation of a BiVCSEL device with slightly detuned cavities, using low resistance distributed Bragg reflector (DBR) mirrors, oxide apertures for current confinement, and two electrically pumped active regions.