Related Experiment Video
Updated: May 20, 2026
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Widely tunable midinfrared difference frequency generation in orientation-patterned GaAs pumped with a femtosecond
C R Phillips1, J Jiang, C Mohr
1E. L. Ginzton Laboratory, Stanford University, 348 Via Pueblo Mall, Stanford California 94305, USA. chris.phillips@stanford.edu
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.
