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Publication Citation: A Fast-Responding Nonlinear Phase Shifter Using an Active Raman Gain Core

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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: Date Unknown
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: Applied Physics Letters
Keywords: gain medium;nonlinear optics;phase shifter
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