Résumé
Development of all-optical schemes of quantum communication and information processing implies a precise control of photon pulses—in particular, their spectral and temporal characteristics. Therefore “slow light”, propagating with a velocity much lower than the speed of light in vacuum, has been studied intensively in recent years. GaN and related materials are very promising for different applications in nanophotonics and optoelectronics. The advantages of time-of-flight spectroscopy to determine the parameters of bulk semiconductors, as well as investigation of the fine structure of an excitonic spectrum, are presented