Fluctuations of the delay of the near-zone radiation field of injection heterolasers amplitude-modulated at high frequencies

An investigation was made of the distribution of the delay of the phase of modulated radiation in the near zone of (GaAl)As heterolasers. The maximum fluctuations in the delay time at a modulation frequency of 750 MHz varied from 10 to 100 psec and depended on the pumping conditions. The regions with a higher radiation intensity in the heterojunction plane were characterized by a shorter phase delay, whereas the reverse was true in the perpendicular direction.