A device based on a material that allows light to pass through in the visible and near-infrared range and amplifies the intensity of 750 nm light that passes through it. To achieve this effect, the device must be illuminated with light from a pulsed laser that provides pulses at a wavelength between 525 and 565 nm, with a duration between 1 and 20 ns.
The 750 nm light optical amplifier has the advantage of offering optical amplification in a spectral range not accessible through standard amplifiers centered in the 1550 nm region