Welcome to LEAL

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  Laser Engineering & Applications Laboratory (LEAL), led by Dr Yoonchan Jeong, explores the outer reaches of photonics science and technology, especially, in high-power and high-energy regimes. The research foci are on developing innovative lasers and photonic systems and also on providing novel and powerful solutions to the related applications. The main research interests include Generation of High-Power / High-Energy Photons, Photon-Photon / Photon-Electron / Photon-Phonon Energy Conversions, Photon-Molecule Interactions, and related many interesting applications, such as Lidar, Laser Sonar, Remote Sensing, Space Optical Communication, Display, Nano-Biomedical applications, Technology Textiles, etc.

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News

  • Our lab got a new student Juhwan Kim.

  • Research professor Luis Alonso Vazquez-Zuniga got a new job at Calmar Laser and received a certification of apreaciation from Y. Jeong.

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  • Our student S. Lee received the best student paper award for COOC 2016 conference.

  • Professor Jeong received the best lecturer award for Spring 2015.

  • Our student Y. Kwon received the best student paper award for COOC 2014 conference.

  • "Adaptive broadband continuum source at 1200-1400nm based on an all-fiber dual-wavelength master-oscillator power amplifier and a high-birefringence fiber" is posted to the OCT news article(Link to the article).

     

  • "Adaptive broadband continuum source at 1200-1400nm based on an all-fiber dual-wavelength master-oscillator power amplifier and a high-birefringence fiber" is also selected as the paper of the Virtual Journal of Biomedical Optics(Link to the journal website)

     

  • Our student K.Park received the best student paper award for ALTA 2013 conference.

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journal 77.jpgCombinatorial Study of Supercontinuum Generation Dynamics in Photonic Crystal Fiber Pumped by Ultrafast Fiber Lasers

 

Y. Kwon, L. A. Vazquez-Zuniga, K. Park, S. lee, H. Chang, and Y. Jeong

 

accepted in April, 2016, IEEE Journal of Quantum Electronics

 

 

 Abstract : We numerically study the dynamics of supercontinuum generation for a variety of possible combinations of photonic crystal fibers and ultrafast fiber laser pulses that the current technologies offer. Three types of photonic crystal fibers typically used in supercontinuum generation and four representative types of ultrafast fiber laser pulses are considered for this combinatorial study. We numerically model and qualitatively discuss the nonlinear evolution of the pulses for their whole twelve combinatorial cases. We also quantitatively analyze their output spectra and organize a performance chart for them in terms of spectral bandwidth, flatness, and degree of spectral coherence. Finally, we suggest the most viable combinations amongst the given photonic crystal fibers and ultrafast fiber laser pulses in order for generating a target supercontinuum spectrum for various specific cases.

 

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 View full text article_journal website link(pdf)