Shi Lingyan, Lindwasser Lukas, Wang Wubao, Alfano Robert, Rodríguez-Contreras Adrián
Institute for Ultrafast Spectroscopy and Lasers, Department of Physics, The City College of the City University of New York, 160 Convent Avenue, New York, NY 10031, USA.
Department of Biology, The City College of the City University of New York, 160 Convent Avenue, New York, NY 10031, USA.
J Biophotonics. 2017 Dec;10(12):1756-1760. doi: 10.1002/jbio.201700022. Epub 2017 Jun 21.
Light transmission of Gaussian (G) and Laguerre-Gaussian (LG) vortex beams in mouse brain tissue is investigated. Transmittance is measured with different orbital angular momentums (OAM) at various tissue thicknesses. In both ballistic and diffusive regions, transmittances of G and LG beams show no significant difference. The transition point from ballistic to diffusive region for the mouse brain tissue is determined at about 480 μm. The observed transmittances of the G and LG beams show independence on OAM modes, which may be attributed to poorly understood interference effects from brain tissue.
研究了高斯（G）光束和拉盖尔 - 高斯（LG）涡旋光束在小鼠脑组织中的光传输。在不同的组织厚度下，测量了具有不同轨道角动量（OAM）的光束的透过率。在弹道和扩散区域，G光束和LG光束的透过率均无显著差异。确定小鼠脑组织从弹道区域到扩散区域的转变点约为480μm。观察到的G光束和LG光束的透过率显示出与OAM模式无关，这可能归因于对脑组织中尚不明确了解的干涉效应。
