Output Characteristics of an InP/InGaAsP Triangle Microcavity Laser

Mode competitions between modes with different output coupling efficiencies can result in optical bistability under certain asymmetric nonlinear gain. For a GaInAsP/InP equilateral triangle microlaser with the side length of 10 mu m, the drop of the output power with the increase of the injection current is observed corresponding to transverse mode transitions. Furthermore, the measured laser spectra up to 270 K show that lasing modes coexist with the wavelength interval of 39 nm at 240 K. The emission at 5.2 THz can be expected by the mode frequency beating with the 39 nm interval.

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National Natural Science Foundation of China 60777028 60723002 60838003；National Basic Research Program of China 2006CB302804；Collaborative Project of National Laboratory for Tsinghua Information Technologies

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National Natural Science Foundation of China 60777028 60723002 60838003；National Basic Research Program of China 2006CB302804；Collaborative Project of National Laboratory for Tsinghua Information Technologies