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Orthogonally polarized frequency combs in a mode-locked VECSEL

par Vladimirov, Andrei A.G.;Panajotov, Krassimir;Tlidi, Mustapha
Référence Optics Letters, 45, 1, page (252-255)
Publication Publié, 2020-01-01

Article révisé par les pairs

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Résumé :

We introduce a spin-flip model for a vertical-externalcavity surface-emitting laser (VECSEL) with a saturable absorber. We demonstrate the possibility, due to the spin-flip dynamics, to generate two orthogonally linearly polarized frequency combs in the mode-locked regime. The two combs are shifted in wavelength due tothe birefringence in the VECSEL gain and/or saturable absorption mirror. We show that the polarization degree of freedom may also lead to several pulses being generated per roundtrip in the two orthogonal linear polarizations and to more complicated dynamics with both linear polarizations excited.