[D-1-2] Quasi-Phase-Matched Difference Frequency Generation at 3.4 μm in High-Quality GaAs/AlGaAs Waveguides K. Hanashima1, I. Ohta1, J. Ota1, T. Matsushita1, T. Kondo1 (1.Univ. of Tokyo , Japan) https://doi.org/10.7567/SSDM.2010.D-1-2