Intracavity Nonlinear Frequency Down-Conversion in a Continuous-Wave Operation Regime of a Dual-Wavelength Vertical-External-Cavity Surface-Emitting Laser

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Steady-state operational characteristics of a dual-wavelength vertical-external-cavity surface-emitting laser (VECSEL) with a nonlinear quasi-phase-matched crystal placed in the laser cavity have been simulated. We have demonstrated the dramatic effect of three-wave nonlinear optical interaction on both the intensity of fundamental optical fields and the carrier concentration in the quantum wells of the laser. Potential capability of the dual-wavelength VECSEL for efficient generation of mid- or far-infrared radiation by means of the intracavity nonlinear frequency conversion has been shown.