| 摘要 |
A cascaded Raman laser (10) has a pump radiation source (12) emitting at a pump wavelength lambdap, an input section (14) and an output section (16) made of an optical medium. Each section (14, 16) comprises wavelength selectors (141, 142, . . . , 145 and 161, 162, . . . , 165) for wavelengths lambda1, lambda2, . . . , lambdan-k, where n>=3, lambdap<LAMBDA1<LAMBDA2< . . . <LAMBDAn-1<LAMBDAn and lambdan-k+1, lambdan-k+2, . . . , lambdan being k>=1 emitting wavelengths of the laser (10). The laser further comprises an intracavity section (18) that is made of a non-linear optical medium, has a zero-dispersion wavelength lambda0 and is disposed between the input (14) and the output (16) section. The wavelengths lambda1, lambda2, . . . , lambdan-k of the wavelength selectors (141, 142, . . . , 145 and 161, 162, . . . , 165) and the zero-dispersion wavelength lambda0 of the intracavity section (18) are chosen such that energy is transferred between different wavelengths by multi-wave mixing.
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