Optical parametric generation in OP-GaAs waveguides pumped by a femtosecond fluoride fiber laser
Rezki Becheker, Myriam Bailly, Saï Idlahcen, Thomas Godin, Bruno Gérard, Hugo Delahaye, G. Granger, Sébastien Février, Arnaud Grisard, É. Lallier, Ammar Hideur
Abstract
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.
Topics & Concepts
Materials scienceOpticsLaserFemtosecondFiber laserOptoelectronicsGallium arsenideUltrashort pulseOptical fiberPhysicsAdvanced Fiber Laser TechnologiesPhotonic Crystal and Fiber OpticsLaser-Matter Interactions and Applications