We have developed GaSb/AlGaSb vertical-cavity surface-emitting lasers (VCSELs) by using solid source molecular beam epitaxy. The reflectivity spectra of the VCSELs show a very narrow (0.9 meV) cavity resonance at 1.5 μm. cw optical pumping results in lasing at the wavelength of the cavity resonance with a laser threshold density of 530 W/cm2 at 77 K.
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Koeth et al. (1998) studied this question.
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