Optical parametric generation in OP-GaAs waveguides pumped by a femtosecond fluoride fiber laser

Thomas Godin (1) , Rezki Becheker (1) , Myriam Bailly (2) , Said Idlahcen (1) , Bruno Gérard (3) , Hugo Delahaye (4) , Geoffroy Granger (4) , Sebastien Fevrier (4) , Arnaud Grisard (2) , Eric Lallier (2) , Ammar Hideur (1)

1 CORIA - Complexe de recherche interprofessionnel en aérothermochimie
2 Thales Research and Technology [Palaiseau]
3 III-V Lab - Alcatel-Thales III-V Lab
4 XLIM - XLIM

We report on mid-infrared optical parametric generation in the 4–5 μm and 9–12 μm bands by pumping custom-designed orientation-patterned gallium arsenide (OP-GaAs) rib waveguides with an ultrafast femtosecond fiber laser system. This pump source is seeded by a mode-locked fluoride fiber laser with 59 MHz repetition rate and can be tuned between 2.8 and 3.2 μm using a soliton self-frequency shifting stage. The single TE and TM modes OP-GaAs crystals feature quasi-phase-matched grating periods of 85 and 90 μm and different transverse sizes thus allowing a wide spectral tunability.

Domaines: Optique [physics.optics]

Thomas Godin, Rezki Becheker, Myriam Bailly, Said Idlahcen, Bruno Gérard, et al.. Optical parametric generation in OP-GaAs waveguides pumped by a femtosecond fluoride fiber laser. Optics Letters, 2022, 47 (4), pp.886-889. ⟨10.1364/OL.443896⟩. ⟨hal-03562532⟩