Abstract
It is expected that an M-type modulation-doped quantum well (QW) lasers can achieve the reduction of threshold current. This is based on the physics that the absorption determined by fv(1 − fc), where fc and fv are the Fermi–Dirac distribution functions for conduction and valence band, respectively, can be reduced by making fc unity, which the aid of n-type modulation doping.1 Furthermore, it has been.examined that the carrier lifetime is also reduced.
© 1996 Optical Society of America
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