Jk. White et al., EFFECTS OF THE INJECTION CURRENT PROFILE SHAPE ON SIDELOBES IN LARGE-APERTURE SEMICONDUCTOR-LASER AMPLIFIERS, Optics letters, 20(6), 1995, pp. 593-595
Sharply peaked near-field sidelobes are formed when the input optical
field pattern interacts with the edges of the current stripe in a semi
conductor laser amplifier. The strength of this interaction is shown t
heoretically to depend principally on the first and second derivatives
of the transverse current profile, and hence one can suppress the sid
elobes by smoothing the sharp edges in the current injection.