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|Author(s):||Lu Deng; Edward W. Hagley; Kaijun Jiang; M Payne;|
|Title:||A Fast-Responding Nonlinear Phase Shifter Using an Active Raman Gain Core|
|Published:||April 22, 2008|
|Abstract:||Using a lifetime broadened N-scheme with an active-Raman-gain (ARG) Lambda core, we show that large nonlinear phase shift can be induced without signal wave attenuation. The new scheme is not based on the ultra-slow-wave technique and it does not exhibit the signal wave attenuation or distortion associated with weakly-driven electromagnetically-induced-transparency-based schemes. We show that the signal wave acquires a large nonlinear phase shift and travels with superluminal propagation characteristics. This raises the possibility of rapidly responding nonlinear phase switching and phase gates for information science.|
|Citation:||Physical Review A|
|Keywords:||gain medium,nonlinear optics,phase shifter|
|Research Areas:||Optical Physics|
|DOI:||http://dx.doi.org/10.1103/PhysRevA.77.045804 (Note: May link to a non-U.S. Government webpage)|
|PDF version:||Click here to retrieve PDF version of paper (99KB)|