Chin. Phys. Lett.  2003, Vol. 20 Issue (10): 1725-1728    DOI:
Original Articles |
Group Velocity Reduction of Light Pulses in Photorefractive Two-Wave Mixing
ZHANG Guo-Quan;DONG Rong;XU Jing-Jun
Photonics Research Center, College of Physical Science, Nankai University, Tianjin 300071 Institute of Applied Physics, TEDA College, Nankai University, Tianjin 300457
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ZHANG Guo-Quan, DONG Rong, XU Jing-Jun 2003 Chin. Phys. Lett. 20 1725-1728
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Abstract We show theoretically that the group velocity of light pluses can be reduced significantly by use of the steep dispersion properties of the phase coupling effect in the photorefractive two-wave mixing process. The group velocity of light pulses of the order of 0.1m/s can be achieved in typical photorefractive BSO crystals with an appropriate externally applied electric field and moving gratings of appropriate speeds. It is also shown that the slowly propagating light pulses can be set to be amplified after passing through the photorefractive material.
Keywords: 42.25.Bs      42.65.Hw      42.70.Nq     
Published: 01 October 2003
PACS:  42.25.Bs (Wave propagation, transmission and absorption)  
  42.65.Hw (Phase conjugation; photorefractive and Kerr effects)  
  42.70.Nq (Other nonlinear optical materials; photorefractive and semiconductor materials)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2003/V20/I10/01725
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