Spectroscopy of a ZnCdSe/ZnSSe quantum well diode laser in high magnetic fields

摘要

We have investigated the characteristics of green-blue II-VI semiconductor diode lasers at room temperature in high magnetic fields. Small spectral shifts, less than 2 meV during the sweep of a field up to 29 T, were measured in ZnCdSe/ZnSSe single quantum well index guided diode devices. This behavior is in contrast with expectations for a noninteracting electron-hole gas in a quantum well system at comparable pair densities (～l0↑(12) cm↑(-2)), implying that the optical gain spectrum shifts diamagnetically. The measured diamagnetic shifts are in close agreement with the low injection electroluminescence and absorption spectra at the n = 1 heavy-hole excitonic transition of the ZnCdSe QW. # 1997 American Institute of Physics. S0003-6951 (97)01546-5