TY - JOUR
T1 - Influence of anisotropy factor on the memory effect: A systematic study
AU - Liu, Honglin
AU - Lai, Puxiang
AU - Han, Shensheng
N1 - Funding Information:
This work was supported by National Natural Science Foundation of China ( 61571427 , 81930048 , and 81671726 ).
Publisher Copyright:
© 2021 Elsevier GmbH
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/4
Y1 - 2021/4
N2 - Optical angular memory effect (AME) is the theoretical foundation of many promising techniques, such as wavefront shaping assisted microscopies, that have allowed us to see clearer and deeper into biological tissues. Conventional predictions in the field only take medium thickness into account, and have been proved to deviate away from practice, especially for biological tissues. Some recent explorations have improved the theory; the paraxial condition governed in most studies, however, restricts the accurate prediction to very thin layers, say, less than 300 μm even when the anisotropy factor is larger than 0.95. To explore the boundaries and promote applications of imaging techniques under different circumstances, a full and accurate understanding of the AME range is urgently needed. In this work, we explore the influence of anisotropy factor g on the AME range with different sample thicknesses. An empirical relationship among the AME range, sample thickness, and g is derived and verified: as g approaches 1, the AME range yields significant enhancement; such dependence on g, however, diminishes rapidly with increased sample thickness. It confirms a rule of thumb that it is meaningful to exploit the AME range only when ballistic photons and/or forward scattering light are non-ignorable.
AB - Optical angular memory effect (AME) is the theoretical foundation of many promising techniques, such as wavefront shaping assisted microscopies, that have allowed us to see clearer and deeper into biological tissues. Conventional predictions in the field only take medium thickness into account, and have been proved to deviate away from practice, especially for biological tissues. Some recent explorations have improved the theory; the paraxial condition governed in most studies, however, restricts the accurate prediction to very thin layers, say, less than 300 μm even when the anisotropy factor is larger than 0.95. To explore the boundaries and promote applications of imaging techniques under different circumstances, a full and accurate understanding of the AME range is urgently needed. In this work, we explore the influence of anisotropy factor g on the AME range with different sample thicknesses. An empirical relationship among the AME range, sample thickness, and g is derived and verified: as g approaches 1, the AME range yields significant enhancement; such dependence on g, however, diminishes rapidly with increased sample thickness. It confirms a rule of thumb that it is meaningful to exploit the AME range only when ballistic photons and/or forward scattering light are non-ignorable.
KW - Anisotropy factor
KW - Field of view
KW - Memory effect
KW - Microscopy
KW - Tissue imaging
UR - http://www.scopus.com/inward/record.url?scp=85100431902&partnerID=8YFLogxK
U2 - 10.1016/j.ijleo.2021.166366
DO - 10.1016/j.ijleo.2021.166366
M3 - Journal article
AN - SCOPUS:85100431902
VL - 231
JO - Optik
JF - Optik
SN - 0030-4026
M1 - 166366
ER -