Broadband Raman amplification in silicon

Solli, Daniel R.; Koonath, Prakash; Jalali, Bahram
November 2008
Applied Physics Letters;11/10/2008, Vol. 93 Issue 19, p191105
Academic Journal
Raman gain is a useful nonlinear phenomenon that has made optically pumped silicon lasers and amplifiers a reality. Unfortunately, the bandwidth of Raman gain in silicon is normally rather limited, owing to the narrow Raman linewidths typical of crystalline materials. Here, we report Raman amplification in silicon with a spectrum that is modified by the simultaneous occurrence of self-phase-modulation. This combined nonlinear action produces a broad Raman gain spectrum from a narrowband pump source.


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