Optical EngineeringAddressing the behavior of the fundamental modes of a Y-type semiconductor laser
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We address the behavior of a Y-laser junction, in which the fundamental modes generated by a twin-stripe semiconductor laser are guided for mixing. When the mode-locked laser emission of the pulses in-phase is launched in the waveguide, coherent combination of the modes in the junction is possible. Fast laser oscillations allow for a reduction in the waveguide angle, which serves to diminish transmission losses produced by bending. Shorter separation distances between stripes and reduced branch lengths also optimize the operation of the device.