Patent ID: 9590387
Date: 2017-03-07
CPC Classifications: H01S

Claim:
1. Non-regenerative optical ultrashort pulse amplifier, comprising: a) a first optical gain medium; b) a second optical gain medium; c) the material properties of the first optical gain medium differ at least partially from the material properties of the second optical gain medium; d) the emission spectra of the first and second optical gain media partially overlap, the emission spectra of the first and second optical gain media are selected to overlap in such a way that a gain spectrum results which is spectrally expanded as compared to the individual emission spectra of the respective first and second optical gain medium; e) the first and second optical gain media are formed by solid-state bulk crystals; f) at least one of the first and second optical gain media contains a host crystal which is doped with a dopant; and g) the dopant is Nd or Yb.