Swiss scientists have developed an ultra-thin lens that turns infrared light into visible light using lithium niobate and ...

The backward-wave oscillator (BWO) is a source of electromagnetic radiation in the centimeter and millimeter wavelength bands ... upon comparison with the sinusoidal profile. denotes the longitudinal ...

Wavelength switching of the laser emission is achieved by controlling the peak reflectivity of the different reflection bands that appear on both sides of the Bragg wavelength when a longitudinal ...

Methods Using a Markov multistate transition model accounting for complex survey design, transition rates between never, non-current, cigarette, ENDS and dual use states were estimated for 23 253 ...

Abstract: We report on a wavelength converter based on dual pump wave mixing in an 1-mm-long bulk semiconductor optical amplifier. Very high conversion efficiency (more than 0 dB) and ...