My major is Optics, especially optical thin films. I had more than 15 years of experience on optical thin film design, fabrication, and analysis. The fabrication method which I used was ion assisted deposition, ion plating, magnetron sputtering, and ion beam sputtering. I also have about 10 years experience on ring laser gyroscope. And I have about two years experience on display components. From 2014, I am focusing on the development of mulltilayer dielectrice gratings for spectral beam combinng(SBC) and chirped pulse amplification(CPA).
Work
Optonics Corp.
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Managing Director
Gwangju, FOREIGN, South Korea
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Summary
Optonics Copr. is specialized on high quality optical components for optical gyroscope & high power lasers. In Optonics, I am in charge of R&D for optical thin films and diffraction gratings.
Highlights
Development of polarization-independent diffraction gratings for SBC(spectral beam combining)
Development of laser mirrors for high power laser systems
Development of ultra low loss mirrors for RLG(ring laser gyroscope)
Development of aromic vapor cells for quantum sensing and quantum communications
Daeduk College
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Associate Professor, Department of Firearms & Optics
Daejeon, Yuseong-gu, Korea (Republic of)
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Summary
Led academic programs, research, and curriculum development within the Department of Firearms & Optics, fostering student success and contributing to the field through extensive publications and leadership.
Highlights
Advanced from Assistant to Associate Professor, demonstrating consistent excellence in teaching, research, and departmental contributions over 17+ years.
Chaired the Optical Technology Division of the Optical Society of Korea (OSK) from 2017-2018, guiding strategic initiatives and promoting advancements in optical science.
Authored 'Practical Optical Thin Films' (2015) and 'Experiments of Electro-Optics' (2008), serving as key educational resources in the field.
Mentored and educated numerous students in advanced optics, thin films, and laser technology, preparing them for careers in industry and academia.
Published over 20 peer-reviewed journal articles in leading optics journals, covering topics such as multilayer dielectric gratings, thin film analysis, and low optical loss mirrors.
Actively engaged as a Senior Member of the Optical Society of Korea since 1990, contributing to the professional community and staying abreast of industry innovations.
Samsung Industries
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Senior Development Engineer of Optical components for LCD Display
Seoul, Seoul, Korea (Republic of)
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Summary
Led development of critical optical components for LCD display technology, enhancing product performance and innovation.
Highlights
Spearheaded the development of advanced optical components for LCD displays, directly contributing to product innovation and market competitiveness.
Applied deep expertise in optical thin films and materials science to optimize display performance, enhancing visual quality and efficiency.
Collaborated cross-functionally with R&D and manufacturing teams to successfully integrate new optical technologies into mass production.
Contributed to the strategic direction of optical component development, ensuring alignment with emerging display technologies and consumer demands.
Institute for Advanced Engineering (IAE)
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Senior Development Engineer of ring laser gyroscope (RLG) and super mirrors using ion beam sputtering
Yongin-si, Gyeonggi-do, Korea (Republic of)
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Summary
Conducted advanced research and development on ring laser gyroscopes and super mirrors using ion beam sputtering techniques.
Highlights
Pioneered the development of ring laser gyroscopes (RLG), achieving significant breakthroughs in precision navigation and sensing technologies.
Developed and optimized super mirrors using ion beam sputtering techniques, enhancing reflectivity and durability for critical optical systems.
Secured multiple patents for innovations in optical prism sheets, filter and plasma display panels, and ring laser gyroscope excitation methods.
Published extensively on ion-beam assisted deposition, optical properties of thin films (TiO2, ZrO2, SiOxNy), and mirror scattering, establishing thought leadership in the field.
Managed complex research projects from conception to completion, ensuring adherence to technical specifications and project timelines.
Collaborated with interdisciplinary teams to advance fundamental understanding and practical applications of advanced optical materials and devices.
Education
Inha University
Incheon, Incheon, Korea (Republic of)
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Doctor of PhilosophyPhysics
Courses
Thesis: Ion Assisted deposition of optical thin films (Advisor: Prof. Changkown Hwangbo)
Kyunghee University
Seoul, Seoul, Korea (Republic of)
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Master of SciencePhysics
Courses
Thesis: Design of the three-reflection halfwave and quarterwave retarders using dielectric-coated metallic mirrors (Advisor: Prof. Jaekyung Hyun)
Kyunghee University
Seoul, Seoul, Korea (Republic of)
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Bachelor of SciencePhysics
Awards
Chair of Optical Technology Division
Optical Society of Korea (OSK)
Led the Optical Technology Division, guiding strategic initiatives and promoting advancements within the field of optics.
Senior Member
Optical Society of Korea (OSK)
Recognized for sustained contributions and expertise in the field of optics.
Publications
Fabrication of high efficiency polarization-independent multilayer dielectric grating by nano-imprint lithography and reactive ion beam etching
SPIE
Design of high efficiency polarization-independent multilayer dielectric grating with a wide tolerance
Korean Journal of Optics and Photonics
Design of high efficiency transmission dielectric grating for chirped pulse amplification
Korean Journal of Optics and Photonics
Simply structured polarization- independent high efficiency multilayer dielectric gratings
Applied Optics
Diffraction efficiency correction of polarization- independent multilayer dielectric gratings
Korean Journal of Optics and Photonics
Zero lock-in implementation by phase wrapping/unwrapping in a ring laser gyroscope
Applied Optics
Design of a simple structured high efficiency polarization-independent multilayer dielectric grating for spectral beam combining)
Korean Journal of Optics and Photonics
Analysis on Design and Fabrication of High-diffraction-efficiency Multilayer Dielectric Gratings
Current Optics and Photonics
Published research on the design and fabrication of high-efficiency multilayer dielectric gratings.
Determining the Thickness of a Trilayer thin film structure by Fourier Transform Analysis
Korean Journal of Optics and Photonics
Research on using Fourier Transform Analysis to determine thin film thickness.
Practical Optical Thin Films
Bookshill
Authored a comprehensive book on practical aspects of optical thin films, serving as a key resource for students and professionals.
Design and Fabrication of Multilayer Dielectric Gratings for spectral beam combining
SPIE
Presented work on designing and fabricating multilayer dielectric gratings for spectral beam combining applications.
Lightweight LED fluorescent lamp using engineering poly carbonate
SPIE
Research on the application of engineering polycarbonate in lightweight LED fluorescent lamps.
Preparation of Industrial Engineer for Optical Instruments
Dooyangsa
Co-authored a publication focused on preparing industrial engineers for careers in optical instrumentation.
Design and Development of an ultralow optical loss mirror coating for Zerodur substrate
Journal of Optical Society of Korea
Published research on developing ultralow optical loss mirror coatings for Zerodur substrates.
Design and fabrication of super mirrors on the Zerodur substrate
SPIE
Presented work on the design and fabrication of super mirrors on Zerodur substrates.
Optical Prism sheet having a certain roughness thereon
Korean Patent Office
Invented an optical prism sheet designed with specific surface roughness characteristics.
Filter and Plasma display panel employing the same
Korean Patent Office
Developed a novel filter for plasma display panels, enhancing display technology.
Experiments of Electro-Optics
Nodemedia
Authored a book detailing experiments in electro-optics, contributing to educational resources in the field.
Effect of substrate surface energy on light scattering of low loss mirror
Korean Journal of Optics and Photonics
Investigated the impact of substrate surface energy on light scattering in low loss mirrors.
Effects of substrate and deposition method onto the mirror scattering
Applied Optics
Research on how substrate properties and deposition methods influence mirror scattering.
Method for manufacturing a microstructure pattern by using micromachining technology
Korean Patent Office
Invented a micromachining technology for manufacturing precise microstructure patterns.
Ring laser gyroscope excited by radio frequency discharge
Korean Patent Office
Patented a method for exciting a ring laser gyroscope using radio frequency discharge.
Characterization of refractive index profile in LiNbO3 waveguides fabricated by high temperature proton exchange method
Korean Journal of Optics and Photonics
Characterized refractive index profiles in LiNbO3 waveguides fabricated via high-temperature proton exchange.
Effects of mirror misalignments on optical ray path in a ring resonator
Journal of Optical Society of Korea
Investigated the effects of mirror misalignments on optical ray paths within ring resonators.
Effect of surface roughness onto the scattering in low loss mirrors
Korean Journal of Optics and Photonics
Published research on the influence of surface roughness on scattering in low loss mirrors.
Lock-in frequency improvement of ring laser gyro using a low-scattering mirror
Korean Journal of Optics and Photonics
Research on improving lock-in frequency in ring laser gyros using low-scattering mirrors.
Measurement of losses in mirror using cavity ring-down method
Korean Journal of Optics and Photonics
Developed and applied the cavity ring-down method for precise measurement of mirror losses.
Anti-reflective coating on TeO2 crystal for the high power Acousto-Optic modulator
Journal of Vacuum Science and Technology A
Designed and developed anti-reflective coatings for TeO2 crystals used in high-power acousto-optic modulators.
Inhomogeneous SiOxNy thin films and a Rugate filter prepared by ion-beam-assisted deposition
Ungyong Mulli
Developed inhomogeneous SiOxNy thin films and Rugate filters using ion-beam-assisted deposition techniques.
Inhomogeneous optical SiOxNy thin films prepared by ion assisted deposition
Nuclear Instruments and Methods in Physics Research B
Research on the preparation of inhomogeneous optical SiOxNy thin films using ion-assisted deposition.
Scattering measurement of dielectric high reflection mirrors by TIS method
Korean Journal of Optics and Photonics
Applied the TIS method for scattering measurement of dielectric high reflection mirrors.
Ion assisted deposition of TiO2, ZrO2 and SiOxNy optical thin films
Journal of Korean Vacuum Society
Investigated ion-assisted deposition techniques for various optical thin films including TiO2, ZrO2, and SiOxNy.
Optical inhomogeneity and microstructure of ZrO2 thin films prepared by ion-beam assisted deposition
Applied Optics
Investigated the optical inhomogeneity and microstructure of ZrO2 thin films prepared by ion-beam assisted deposition.
Ion assisted deposition of TiO2 thin film by Kaufman and Gridless ion source
The Review of Laser Engineering
Researched ion-assisted deposition of TiO2 thin films using Kaufman and Gridless ion sources.
Design of Rugate filters of inhomogeneous refractive index using the Fourier transform
Korean Journal of Optics and Photonics
Designed Rugate filters with inhomogeneous refractive index profiles using Fourier transform analysis.
Optical properties of ZrO2 thin films prepared by ion-beam assisted deposition
Ungyong Mulli
Studied the optical properties of ZrO2 thin films fabricated via ion-beam assisted deposition.
Ion beam assisted deposition of thermally evaporated Cr thin films
SPIE
Presented research on ion beam assisted deposition of thermally evaporated Cr thin films.
Optical properties of TiO2 thin films prepared by ion-beam assisted deposition
Korean Journal of Optics and Photonics
Investigated the optical properties of TiO2 thin films prepared through ion-beam assisted deposition.
Skills
Research & Development
Optical Thin Films, Multilayer Dielectric Gratings, Wire Grid Polarizers, Ring Laser Gyroscopes (RLG), Ion Beam Sputtering, Optical Components, Super Mirrors, Thin Film Deposition, Materials Science, Optical Design, Laser Technology, Vacuum Technology, Fourier Transform Analysis, Light Scattering, Refractive Index Characterization, Micromachining Technology.
