The laser oscillation of GaAs-AlGaAs DH-structure laser with a bent guide was reported. The threshold current density Jthwas about 3-15 kA/cm2, and the longitudinal mode was single up to 1.7 times Jth. From the simulation experiments, it was concluded that this mode selectivity was due to the multicavity effect.
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N. Matsumoto (1977) studied this question.
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