title: Extreme nonlinearities in InAs/InP nanowire gain media: the two-photon induced laser.
abstract: We demonstrate a novel laser oscillation scheme in an InAs / InP wire-like quantum dash gain medium. A short optical pulse excites carriers by two photon absorption which relax to the energy levels providing gain thereby enabling laser oscillations. The nonlinear dynamic interaction is analyzed and quantified using multi-color pump-probe measurements and shows a highly efficient nonlinear two photon excitation process which is larger by more than an order of magnitude compared to common quantum well and bulk gain media. The dynamic response of the nonlinearly induced laser line is characterized by spectrally resolved temporal response measurements, while changes incurring upon propagation in the stimulating short pulse itself are characterized by frequency resolved optical gating (FROG).
authors.affiliation: Department of Electrical Engineering, Technion, Haifa 32000, Israel. acapua@tx.technion.ac.il
authors.forename: Amir
authors.initials: A
authors.lastname: Capua
authors.forename: Ouri
authors.initials: O
authors.lastname: Karni
authors.forename: Gadi
authors.initials: G
authors.lastname: Eisenstein
authors.forename: Johann Peter
authors.initials: JP
authors.lastname: Reithmaier
authors.forename: Kresten
authors.initials: K
authors.lastname: Yvind
mesh_terms: D000669:Amplifiers, Electronic; D001152:Arsenicals / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007204:Indium / Q000737:chemistry*; D007834:Lasers; D008422:Materials Testing; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D017711:Nonlinear Dynamics; D009991:Oscillometry / Q000295:instrumentation*; D010720:Phosphines / Q000737:chemistry*; D017785:Photons
chemical_list: D001152:Arsenicals; D010720:Phosphines; D007204:Indium; C076773:indium arsenide; C090882:indium phosphide