20.500.12556/RUL-131677 Second-harmonic generation of blue light in GaN waveguides Second-harmonic generation was studied in III-metal-polar GaN films grown on sapphire substrates by metalorganic chemical vapor deposition and formed into ridge waveguides. Broadband near-IR femtosecond pulses of an optical parametric amplifier system were injected by end-fire coupling and the nonlinear response was measured while tuning the central wavelength. A prominent peak was found at 450 nm for 1140 nm thick and 10 µm wide GaN waveguides. The measured second-harmonic peak was in agreement with the modal-dispersion phase matching condition calculated using the dispersion of the extraordinary refractive indices of GaN obtained by prism coupling. nonlinear optics optical waveguides semiconductors GaN waveguides second-harmonic generation modal-dispersion phase matching nelinearna optika optični valovodi polprevodniki true false true Angleški jezik Slovenski jezik Članek v reviji 2021-10-01 08:17:32 2021-10-01 08:17:33 2022-09-10 04:13:05 0000-00-00 00:00:00 2018 0 0 10 str. iss. 8, art. 1218 Vol. 8 Aug. 2018 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 535.18 2076-3417 10.3390/app8081218 3236964 RAZ_Rigler_Martin_2018.pdf RAZ_Rigler_Martin_2018.pdf 1 2B78232B645E9F0A7CA3ADE8C08AD8A8 b604051bced2b19223ddc1e5c38932ec5f98420f75607558971490ea49f2896a 49da6718-227f-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=149065 https://www.mdpi.com/2076-3417/8/8/1218 0 321f45b7-227f-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=149064 Fakulteta za matematiko in fiziko 0 0 0