H. Mawatari et al., MODULATION-DOPED GAINAS GAINASP STRAINED MULTIPLE-QUANTUM-WELL LASERSGROWN BY CHEMICAL BEAM EPITAXY/, Applied physics letters, 65(3), 1994, pp. 277-279
We report the characteristics of Be-modulation-doped strained multiple
-quantum-well (MQW) buried heterostructure lasers grown by chemical-be
am epitaxy. Secondary ion mass spectroscopy revealed that the Be-modul
ation-doping profile was fabricated and maintained even after annealin
g at 620-degrees-C for 30 min, which is the same condition used to fab
ricate the buried heterostructure. A linewidth enhancement factor (alp
ha parameter) of only 0.8 was obtained in 3X10(18) cm-3 Be-modulation-
doped strained MQW Fabry-Perot lasers at a wavelength of 35 nm shorter
than the gain peak.