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Large-scale optical diffraction tomography for inspection of optical plastic lenses
Kyoohyun Kim, Jonghee Yoon, YongKeun Park
Herein is presented an optical diffraction tomography (ODT) technique for measuring 3-D refractive index (RI) maps of optical plastic lenses. A Mach-Zehnder interferometer was used…
Hyperspectral optical diffraction tomography
JaeHwang Jung, Kyoohyun Kim, Jonghee Yoon +1
Here, we present a novel microscopic technique for measuring wavelength-dependent three-dimensional (3-D) distributions of the refractive indices (RIs) of microscopic samples in th…
Active illumination using a digital micromirror device for quantitative phase imaging
Seungwoo Shin, Kyoohyun Kim, Jonghee Yoon +1
We present a powerful and cost-effective method for active illumination using a digital micromirror device (DMD) for quantitative phase imaging techniques. Displaying binary illumi…
Label-free characterization of white blood cells by measuring 3D refractive index maps
Jonghee Yoon, Kyoohyun Kim, HyunJoo Park +3
The characterization of white blood cells (WBCs) is crucial for blood analyses and disease diagnoses. However, current standard techniques rely on cell labeling, a process which im…
Recent advances in wavefront shaping techniques for biomedical applications
Hyeonseung Yu, Jongchan Park, KyoReh Lee +4
Due to the highly inhomogeneous distributions of refractive indexes, light propagation in complex media such as biological tissue experiences multiple light scattering events. The…
Measuring optical transmission matrices by wavefront shaping
Jonghee Yoon, KyeoReh Lee, Jongchan Park +1
We introduce a simple but practical method to measure the optical transmission matrix (TM) of complex media. The optical TM of a complex medium is obtained by modulating the wavefr…