中国物理B ›› 2011, Vol. 20 ›› Issue (7): 74207-074207.doi: 10.1088/1674-1056/20/7/074207

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An optical rotation sensor based on dispersive slow-light medium

王楠, 掌蕴东, 袁萍   

  1. Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China
  • 收稿日期:2010-11-26 修回日期:2011-01-17 出版日期:2011-07-15 发布日期:2011-07-15

An optical rotation sensor based on dispersive slow-light medium

Wang Nan(王楠)a)b), Zhang Yun-Dong(掌蕴东) a)†, and Yuan Ping(袁萍)a)   

  1. Institute of Opto-electronics, Harbin Institute of Technology, Harbin 150080, China; b Engineering Research Center of Optoelectronic Materials & Devices, School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, China
  • Received:2010-11-26 Revised:2011-01-17 Online:2011-07-15 Published:2011-07-15

摘要: Slow light supported by electromagnetically induced transparency effect in dispersive medium is extremely susceptible with respect to Doppler detuning. In this paper, the Doppler effect induced by rotating dispersive medium was considered and the effect of the velocity of rotating dispersive medium on the group velocity was studied. Based on a dispersive slow-light medium, a high sensitive optical rotation sensor for measuring absolute rotation is proposed and analysed. The sensitivity of the rotation sensor is the group delay between the counterpropagationed wave packets in the device, and scales directly with square of the group index which can reach 102—108 orders of magnitude by selecting a proper dispersive medium.

关键词: slow light, dispersive medium, absolute rotation, group delay

Abstract: Slow light supported by electromagnetically induced transparency effect in dispersive medium is extremely susceptible with respect to Doppler detuning. In this paper, the Doppler effect induced by rotating dispersive medium was considered and the effect of the velocity of rotating dispersive medium on the group velocity was studied. Based on a dispersive slow-light medium, a high sensitive optical rotation sensor for measuring absolute rotation is proposed and analysed. The sensitivity of the rotation sensor is the group delay between the counterpropagationed wave packets in the device, and scales directly with square of the group index which can reach 102—108 orders of magnitude by selecting a proper dispersive medium.

Key words: slow light, dispersive medium, absolute rotation, group delay

中图分类号:  (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

  • 42.50.Gy
42.68.Wt (Remote sensing; LIDAR and adaptive systems) 42.79.Qx (Range finders, remote sensing devices; laser Doppler velocimeters, SAR, And LIDAR)