title: Widely tunable midinfrared difference frequency generation in orientation-patterned GaAs pumped with a femtosecond Tm-fiber system.
abstract: We demonstrate a midinfrared source tunable from 6.7 to 12.7 μm via difference frequency generation (DFG) in orientation-patterned GaAs, with 1.3 mW average output power. The input pulses are generated via Raman self-frequency shift of a femtosecond Tm-doped-fiber laser system in a fluoride fiber. We numerically model the DFG process and show good agreement between simulations and experiments. We use this numerical model to show an improved design using longer pump pulses.
authors: E. L. Ginzton Laboratory, Stanford University, 348 Via Pueblo Mall, Stanford California 94305, USA. chris.phillips@stanford.edu
authors: C R
authors: CR
authors: Phillips
authors: J
authors: J
authors: Jiang
authors: C
authors: C
authors: Mohr
authors: A C
authors: AC
authors: Lin
authors: C
authors: C
authors: Langrock
authors: M
authors: M
authors: Snure
authors: D
authors: D
authors: Bliss
authors: M
authors: M
authors: Zhu
authors: I
authors: I
authors: Hartl
authors: J S
authors: JS
authors: Harris
authors: M E
authors: ME
authors: Fermann
authors: M M
authors: MM
authors: Fejer
mesh_terms: D001152:Arsenicals; D005708:Gallium; D055100:Optical Fibers; D055620:Optical Phenomena; D013932:Thulium; D013997:Time Factors
chemical_list: D001152:Arsenicals; C043055:gallium arsenide; D013932:Thulium; D005708:Gallium