中国物理B ›› 2019, Vol. 28 ›› Issue (7): 74207-074207.doi: 10.1088/1674-1056/28/7/074207

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Memory effect evaluation based on transmission matrix calculation

Ming Li(李明), Long-Jie Fang(方龙杰), Lin Pang(庞霖)   

  1. College of Physics, Sichuan University, Chengdu 610065, China
  • 收稿日期:2019-01-23 修回日期:2019-04-04 出版日期:2019-07-05 发布日期:2019-07-05
  • 通讯作者: Lin Pang E-mail:panglin_p@yahoo.com
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61675140 and 61377054) and Graduate Student's Research and Innovation Fund of Sichuan University, China (Grant No. 2018YJSY005).

Memory effect evaluation based on transmission matrix calculation

Ming Li(李明), Long-Jie Fang(方龙杰), Lin Pang(庞霖)   

  1. College of Physics, Sichuan University, Chengdu 610065, China
  • Received:2019-01-23 Revised:2019-04-04 Online:2019-07-05 Published:2019-07-05
  • Contact: Lin Pang E-mail:panglin_p@yahoo.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61675140 and 61377054) and Graduate Student's Research and Innovation Fund of Sichuan University, China (Grant No. 2018YJSY005).

摘要:

The memory effect is a type of auto correlation observed in linear systems, which is widely used to control scattered light through thin scattering layers. We show that there exists a strong correlation among the optimized phase distributions of adjacent focal points in focusing through scattering media. The numeric simulation and experiment indicate that within the memory effect, the phase difference between the two adjacent focal points shows an optical phase fringe pattern, and the closer the adjacent focal points are, the wider the fringe pattern will be, corresponding to the tilting of a plane wave phase added onto the acquired optical phase distribution at the focal point. This effect can be utilized for achieving optimal phase distributions of focal point scanning without optical phase evaluation via the experiment, which has great potential application in imaging through the scattering medium.

关键词: scattering media, phase modulation, optical memory effect, focal point

Abstract:

The memory effect is a type of auto correlation observed in linear systems, which is widely used to control scattered light through thin scattering layers. We show that there exists a strong correlation among the optimized phase distributions of adjacent focal points in focusing through scattering media. The numeric simulation and experiment indicate that within the memory effect, the phase difference between the two adjacent focal points shows an optical phase fringe pattern, and the closer the adjacent focal points are, the wider the fringe pattern will be, corresponding to the tilting of a plane wave phase added onto the acquired optical phase distribution at the focal point. This effect can be utilized for achieving optimal phase distributions of focal point scanning without optical phase evaluation via the experiment, which has great potential application in imaging through the scattering medium.

Key words: scattering media, phase modulation, optical memory effect, focal point

中图分类号:  (Interference)

  • 42.25.Hz
42.30.Rx (Phase retrieval) 78.20.-e (Optical properties of bulk materials and thin films)