Patent ID: 9502855
Filing Date: 2016-11-22
CPC Classification: H01S

Claim Text:
1. A method of generating a high-power laser signal at 1240 nm having a narrow and controllable linewidth, by employing a dual-seeded linear Raman amplifier, comprising: a. supplying a zeroth-order Stokes wavelength signal at 1066 nm; b. supplying a third-order Stokes wavelength seed signal at 1240 nm, at a linewidth approximately equal to a desired output signal linewidth, and having a seed power level; c. converting the zeroth-order Stokes wavelength signal to a first-order Stokes wavelength signal at 1118 nm; d. converting the first-order Stokes signal at 1118 nm into a second-order Stokes wavelength signal at 1176; and e. amplifying the seed power level through Raman amplification using the second-order Stokes wavelength signal at 1176 nm, whereby f. a third-order Stokes wavelength laser signal at 1240 nm having the desired output signal linewidth is generated having an amplified power level greater than the seed power level.