New linear laser amplifiers of a periodically modulated laser radiation based on an injection-locked method

摘要

We describe and analyse an original technique for all-optical and high gain ( approx 10 ~3 - 10 ~6 ) amplification of a periodically modulated (PM) intensity low-power (approx mu mW) laser radiation. The amplification is based on the injection locking control in linear laser schemes with homogeneously broadened active medium. The main problem of the injection locking amplifiers is to obtain a linear response to the PM injection. We propose to solve this problem by injecting a second laser beam with a constant power and a slightly different wavelength or orthogonal polarization compared to the injected PM beam.