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Sensitive optical coating defect detection via second harmonic generation
Jakub Lukeš, Věra Hájková, Martina Hlubučková +2
Optical coating, an integral part of many optical systems, is prone to damage from environmental exposure and laser irradiation. This underscores the need for reliable and sensitiv…
Optically enhanced second harmonic generation in silicon oxynitride thin films via local layer heating
Jakub Lukeš, Vít Kanclíř, Jan Václavík +3
Strong second harmonic generation (SHG) in silicon nitride has been extensively studied-among others, in terms of laser-induced SHG enhancement in Si3N4 waveguides. This enhancemen…
Precision of silicon oxynitride refractive-index profile retrieval using optical characterization
Vít Kanclíř, Jan Václavík, Karel Žídek
Layers with gradient refractive-index profile are an attractive alternative to conventional homogeneous stack coatings. However, the optical characterization and monitoring of the…