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Substantial increases in substrate temperature, super-saturation, and V/III ratio have dramatically improved vertical domain propagation during hydride vapour phase epitaxy of orientation-patterned gallium phosphide, leading to device-quality quasi-phasematched layer thicknesses exceeding 400 microns.
Here we report on recent advances in the development of orientation-patterned gallium phosphide (OP-GaP) — a low loss, non-critically phase-matched, 1-μm-pumpable binary analog of ZGP with three times the thermal conductivity for high power applications.
We report a gain-enhanced and spectral-narrowed optical parametric oscillator based on a monolithic PPLN integrating an optical parametric generator with two electro-optically active polarization-mode converters. Unique spectral manipulation of the OPO signal is also demonstrated.
A temperature-insensitive dual-comb filter has been demonstrated for the first time by multimode interference based on a Ti:LiNbO3 channel waveguide. The phase difference between comb filters was about 180deg. We only observed less than plusmn0.125-nm variation of the center wavelength of the filter during temperature change from 20degC to 50degC. The measured extinction ratio and channel spacing...
Summary form only given. Our studies reveal that cells made of high-grade fused silica containing Zn:tetra(p-methoxyphenyl) tetrabenzporphyrin (TBP) in solution in tetrahydrofuran (THF) have a very high damage threshold fluence close to that of the bare fused silica. Other materials, such as Si:naphthalocyanine, in toluene exhibit considerably lower damage thresholds. For this reason, and because...
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