Efficient frequency conversion in OP-GaP grown on OP-GaAs templates

Here we report for the first time nonlinear frequency conversion in OP-GaP layers grown by hydride vapor-phase epitaxy on OP-GaAs templates. Multi-grating 3-inch wafer design enabled discrete wavelength tuning via stepped gratings, continuous tuning via fan gratings, and bandwidth engineering via chirped gratings, with 14- 35.2-micron periods that propagated up to 300 microns in a 1.2-mm-thick layer before breakdown. Polished, AR-coated, 3-mm-long OPO crystals were fabricated and pumped at 1040 nm (5.5W, 100 MHz, 2.5 ps) with a Chromacity Yb-fiber laser, yielding output powers of 140, 90, and 60 mW at idler wavelengths of 5.6, 7.8, and 10.7 microns respectively