All articles tagged with #second harmonic generation
The article discusses a novel programmable nonlinear waveguide that allows dynamic control of χ(2) nonlinearity for versatile nonlinear optical functions, demonstrated through experiments on spectral, spatial, and spatio-spectral engineering of second-harmonic generation, with potential applications in integrated photonics and quantum technologies.
Researchers from Osaka University have developed an optical device made of aluminum nitride that can generate deep-UV light using a process called "second harmonic generation." By merging two visible photons into a single deep-UV photon, the device can effectively kill pathogens on surfaces while remaining safe for humans. The device's narrow wavelength range ensures germ-killing efficacy while minimizing harm to human cells. The researchers aim to refine the method for commercial production of energy-efficient deep-UV disinfection tools.