Welcome!

Email: hajun.yoo [AT] gatech.edu

Laboratory for Systems Biophotonics at Georgia Tech

Hajun Yoo

Postdoctoral Fellow, Georgia Institute of Technology

I'm currently a Postdoctoral Fellow at Georgia Tech, working with Prof. Shu Jia in the Wallace H. Coulter Department of Biomedical Engineering. I received my Ph.D. in Electrical and Electronic Engineering from Yonsei University in 2026, advised by Prof. Donghyun Kim. My research focuses on computational optics and photonics for advanced bioimaging. I develop imaging systems that combine optical design with computational reconstruction, including super-resolution microscopy, label-free holographic imaging, nanophotonics, and metasurface-integrated devices.

Professional Experience

Postdoctoral Fellow, Georgia Tech, Atlanta, GA, USA (Prof. Shu Jia's Group) (May 2026 - Present)
Postdoctoral Fellow, Yonsei Univ., Seoul, Korea (Prof. Donghyun Kim's Group) (Mar 2026 - Apr 2026)

Education

Ph.D. in Electrical and Electronic Engineering, Yonsei Univ., Seoul, Korea (Mar 2021 - Feb 2026)

Advisor: Prof. Donghyun Kim

B.S. in Physics, Yonsei Univ., Seoul, Korea (Mar 2015 - Feb 2021)

Research Interests

Advanced Optical Microscopy

Super-resolution microscopy (SIM, SOFI), 3D/volumetric biological imaging, label-free holographic imaging

Computational Imaging & AI

Inverse problem–driven image reconstruction, deep learning for super-resolution, quantitative phase imaging

Nanophotonics & Plasmonics for Optical Imaging

Plasmonic substrates and metasurfaces for near-field illumination and enhanced light-matter interaction, chip-based integration with microscopy

News

(2026-02) I gave an invited talk at the Biomedical Photonics Society (BiPS) Journal Club (GT/Emory), online.
(2026-01) I was selected as a BK21-Yonsei Outstanding Graduate Student (Silver Award).
(2026-01) I received SPIE Photonics West 2026 travel grant.
(2025-10) My paper on near-isotropic imaging was published in Nature Communications!
(2025-09) I gave a talk at the China-Korea Joint Forum on Advanced Optical Microscopy 2025 in Peking University, Beijing.
(2025-07) I won the Best Paper Award at OPC 2025 (OSK).
(2025-01) I started to serve as President of the Yonsei SPIE Student Chapter.
(2023-06) I was awarded Basic Science Research Program grant from the NRF of Korea funded by the Ministry of Education (2 yrs, PI).
(2023-01) I participated in the Global Young Scientists Summit (GYSS 2023, Singapore).
(2022-07) I won the Best Poster Award at OPC 2022 (OSK).
(2022-05) I was awarded the SPIE Optics and Photonics Education Scholarship 2022.
(2022-02) I was selected as a BK21-Yonsei Outstanding Graduate Student.
(2022-01) I started to serve as President of the Yonsei OPTICA Student Chapter.
(2021-12) I received SPIE Photonics West 2022 travel grant.
(2021-07) I won the Best Poster Award at Nano Korea 2021.
(2021-07) I won the Best Paper Award at OPC 2021 (OSK).
(2021-06) My paper on NanoSIM was selected as the cover of Advanced Optical Materials.

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