Patent ID: 6996135

Claim:
A cascaded Raman laser comprising: a) a pump radiation source emitting at a pump wavelength λ p , b) an input section and an output section made of an optical medium, each section comprising wavelength selectors for wavelengths λ 1 , λ 2 , . . . , λ n−k , where n≧3, λ p <λ 1 <λ 2 < . . . <λ n−1 <λ n and λ n−k+1 , λ n−k+2 , . . . , λ n being k≧1 emitting wavelengths of the laser, and c) an intracavity section that is made of a non-linear optical medium, has a zero-dispersion wavelength λ 0 and is disposed between the input and the output section, wherein d) the wavelengths λ 1 , λ 2 , . . . , λ n−k of the wavelength selectors and the zero-dispersion wavelength λ 0 of the intracavity section are chosen such that energy is transferred between radiation of different wavelengths by multi-wave mixing.