Patent ID: 9515452
Filing Date: 2016-12-06
CPC Classification: H01S

Claim Text:
1. A coherent dynamically controllable narrow band light source, comprising: a first sub-light source, said first sub-light source being electrically controllable such as to generate controllable time-dependent intensity patterns of light having a first wavelength; a Raman active medium suitable to cause Raman scattering of light having said first wavelength; a second sub-light source capable of emitting light with a second wavelength, said second wavelength being longer than said first wavelength; and an optical fiber or waveguide, wherein said light emitted by said first and second sub-light sources traverses a length of said optical fiber or waveguide in a feed-forward configuration to facilitate a non-linear wavelength conversion step involving said Raman-active medium, wherein at least one of said first and second sub-light sources has a coherence length longer than 0.5 mm, wherein the length of said fiber or waveguide is selected such as to allow for at least two consecutive Raman wavelength shifts, and wherein the frequency shift associated with the at least two Raman shifts is a corresponding multiple of the difference between said second and first wavelengths.