Regenerative glass-fiber neodymium quantum amplifier

Experimental and theoretical investigations were made of amplifying properties of an active neodymium glass fiber and a regenerative amplification regime was observed. It was found that the intensity gain of such a glass-fiber optical quantum amplifier increased exponentially on increase in the pump energy and corresponded to a regenerative regime. It was found that such a regenerative amplifier could operate on pulses above a certain minimum power. The experimental value of this minimum power was 10 mW. The maximum gain achieved in these experiments was 10⁵ when the active length of the fiber was 40 cm.