D. Patel et al., NONMONOTONIC BEHAVIOR OF THE THRESHOLD CURRENT OF COMPRESSIVELY STRAINED 1.3 MU-M INGAASP LASERS WITH HYDROSTATIC-PRESSURE, Physica status solidi. b, Basic research, 198(1), 1996, pp. 375-380
Hydrostatic pressure measurements of the threshold current of 1.3 mu m
compressively strained InGaAsP multiple quantum well lasers show an i
nitial decrease up to 1.2 GPa followed by an increase at higher pressu
res. This behavior is explained by considering the changes in the diff
erential gain and optical losses determined from measurements of the s
pontaneous emission and of the external differential efficiency as a f
unction of pressure, respectively.