All-optically controlled concurrent slow-fast light pair

作者：Patnaik Anil K^*; Roy Sukesh; Gord James R

来源：Optics Letters, 2011, 36(16): 3272-3274.

We demonstrate how both normal and anomalous dispersion can be realized concurrently for a pair of weak probes in a doubly driven double-ladder configuration with independent and simultaneous control for group velocities of the pair. We have shown both analytically and numerically that, because of electromagnetically induced transparency and a chi((3))-based gain process, a slow-fast light pair can be realized in the same delay element with group indices similar to +/- 10(7) accompanied by gain or relatively small absorption (down to similar to 25%). We also identify parameter regions for realization of concurrent slow-slow and fast-fast light pairs with reduced absorptions.

• 出版日期2011-8-15