세미나안내

[2017 10 18] 정기세미나 5th

Applications of inverse scattering principles with digital holography

관리자 | 2017.09.25 09:23 | 조회 680


Applications of inverse scattering principles with digital holography

 

 Date: 2017. 10. 18(WED) , 17:00 ~ 18:15

 Place: Science Building, Room.202 Multimedia Room

 Speaker: Prof. YongKeun Park (KAIST)

Host of a Seminar: Prof. Jung Ho Je

 

Speaker Language: ENGLISH

 

Abstract:

 

In this talk, we will present the applications of inverse scattering principles with digital holography. First, I will present the recently developed 3-D holotomography setup using a dynamic mirror device, which is an optical analogous to X-ray computed tomography. In particular, I will discuss the visualization of 3D refractive index distributions of biological cells and tissues measured with the 3-D holotomography using the transfer function method. For a weakly scattering sample, such as biological cells and tissues, a three-dimensional refractive index tomogram of the sample can be reconstructed with the inverse scattering principle from multiple measurements of two-dimensional holograms. The outcome demonstrates outstanding visualization of 3D refractive index maps of live. In addition, we also discuss the applications of inverse scattering principle for highy scattering layers. With wavefront shaping techniques using digital holography, we demonstrate ultra-high-definition dynamic holographic display exploiting large space-bandwidth in volume speckle. Exploiting light scattering in diffusers, we also demonstrate the holographic image sensor which does not require for the use of a reference beam

[1] Kyeoreh Lee et al., arXiv preprint:1612.00044

[2] Kyeoreh Lee et al., Nature Communications, 7:13359 (2016)

[3] Hyeonseung Yu et al., Nature Photonics, 11 :186 (2017)

[3] Kyoohyun Kim et al., Nature Communications, in press

 

Department of Materials Science and Engineering





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