The optical properties of liquid crystals have been a subject of study for many years now, with previous papers investigating second harmonic generation in ferroelectric smectic liquid crystals being ...

In the numerical calculations, the quantitative analysis of second-harmonic generation takes both surface and bulk effects ...

Tunable lasing at around 405 nm is realised with an InGaN device featuring a narrow-ridge active channel and a periodically ...

The waveforms shown below are the result of combining the first and second harmonics with different phase angles between them. Although they look different, their perceived sound will be the same.