Publications

  1. H. S. Bark, M.-W. Park, I. H. Baek, K.-H. Jang, Y. U. Jeong, K. Lee, and T.-I. Jeon, "Broadband terahertz guided-mode resonance filter using cyclic olefin copolymer," Opt. Express 30, 7976 (2022).

  2. I. H. Baek, H. W. Kim, H. S. Bark, K.-H. Jang, S. Park, J. Shin, Y. C. Kim, M. H. Kim, K. Y. Oang, K. Lee, F. Rotermund, N. A. Vinokurov, and Y. U. Jeong, "Real-time ultrafast oscilloscope with a relativistic electron bunch train," Nat. Commun. 12, 6851 (2021).

  3. H. S. Bark, I. H. Baek, G.-R. Kim, Y. U. K.-H. Jang, K. Lee, and T.-I. Jeon, "Polarization-independent all-dielectric guided-mode resonance filter according to binary grating and slab waveguide dimensions," Opt. Express 29, 37917 (2021).

  4. J. Shin, H. W. Kim, I. H. Baek, S. Park, H. S. Bark, K. Y. Oang, K.-H. Jang, K. Lee, F. Rotermund, Y. U. Jeong and J. Kim, "Sub-10-fs timing for ultrafast electron diffraction with THz-driven streak camera," Laser Photonics Rev. 15, 2000326 (2021).

  5. H. W. Kim, I. H. Baek, J. Shin, S. Park, H. S. Bark, K. Y. Oang, K.-H. Jang, K. Lee, N. A. Vinokurov, and Y. U. Jeong, "Method for developing a sub-10 fs ultrafast electron diffraction technology," Struct. Dyn. 7, 034301 (2020).

  6. H. W. Kim, N. A. Vinokurov, I. H. Baek, K. Y. Oang, M. H. Kim, Y. C. Kim, K,-H. Jang, K. Lee, S. H. Park, S. Park, J. Shin, J. Kim, F. Rotermund, S. Cho, T. Feurer, and Y. U. Jeong, "Towards jitter-free ultrafast electron diffraction technology," Nat. Photon. 14, 245-249 (2020).

  7. M. Jewariya, P. Singh, G. Moona, G. Shanker, K. M. K. Srivatsa, I. H. Baek, and Y. U. Jeong, "Investigation of dynamic optical behavior of CeO2 thin film using terahertz spectroscopy," Opt. Mater. 85, 295-297 (2018).

  8. K. J. Ahn, J. Y. Gwak, B. J. Lee, S. Y. Choi, M. H. Kim, I. H. Baek, Y. U. Jeong, and F. Rotermund, "Wavelength and fluence dependent third-order optical nonlinearity of mono- and multi-layer graphene," Appl. Opt. 56, 9920-9924 (2017).

  9. I. H. Baek, J. M. Hamm, K. J. Ahn, B. J. Kang, S. S. Oh, S. Bae, S. Y. Choi, B. H. Hong, D.-I. Yeom, B. Min, O. Hess, Y. U. Jeong, and F. Rotermund, "Boosting the terahertz nonlinearity of graphene by orientation disorder," 2D Mater. 4, 025035 (2017).

  10. H. J. Choi, I. H. Baek, B. J. Kang, H.-D. Kim, S. S. Oh, J. M. Hamm, A. Pusch, J. Park, K. H. Lee, J. H. Son, Y. U. Jeong, O. Hess, F. Rotermund, and B. Min, "Control of terahertz nonlinear transmission with electrically-gated graphene metadevices," Sci. Rep. 7, 42833 (2017).

  11. H. Yang, B. Han, J. Shin, D. Hou, H. Chung, I. H. Baek, Y. U. Jeong, and J. Kim, "10-fs-level synchronization of Ti:sapphire photocathode laser with S-band RF-oscillator for ultrafast electron and X-ray sources," Sci. Rep. 7, 39966 (2017).

  12. M. H. Kim, T. Calmano, S. Y. Choi, B. J. Lee, I. H. Baek, K. J. Ahn, D.-I. Yeom, C. Kränkel, and F. Rotermund, "Monolayer graphene coated Yb:YAG channel waveguides for Q-switched laser operation," Opt. Mater. Express 6, 2468 (2016).

  13. B. J. Kang, I. H. Baek, S.-H. Lee, W. T. Kim, S.-J. Lee, Y. U. Jeong, O.-P. Kwon, and F. Rotermund, "Highly nonlinear organic crystal OHQ-T for efficient ultra-broadband terahertz wave generation beyond 10 THz," Opt. Express 24, 11054 (2016).

  14. I. H. Baek, B. J. Kang, Y. U. Jeong, F. Rotermund, "Diffraction-limited high-power single-cycle terahertz pulse generation in prism-cut LiNbO3 for precise terahertz applications," J. Opt. Soc. Kor. 18, 60 (2014).

  15. B. J. Kang, I. H. Baek, J. H. Jeong, J. S. Kim, S. H. Lee, O-P. Kwon, F. Rotermund, “Characteristics of efficient few-cycle terahertz radiation generated in as-grown nonlinear organic single crystals,” Cur. Appl. Phys. 14, 403 (2014).

  16. J.-H. Jeong, B. J. Kang, J.-S. Kim, M. Jazbinsek, S.-H. Lee, S.-C. Lee, I. H. Baek, H. Yun, J. Kim, Y. S. Lee, J.-H. Lee, J.-H. Kim, F. Rotermund and O.-P. Kwon, "High-power Broadband Organic THz Generator," Sci. Rep. 3, 3200 (2013).

  17. I. H. Baek, K. J. Ahn, B. J. Kang, S. Bae, B. H. Hong, D.-I. Yeom, K. Lee, Y. U. Jeong, F. Rotermund, "Terahertz transmission and sheet conductivity of randomly stacked multi-layer graphene," Appl. Phys. Lett. 102, 191109(2013).

  18. F. Rotermund, W. B. Cho, S. Y. Choi, I. H. Baek, J. H. Yim, S. Lee, A. Schmidt, G. Steinmeyer, U. Griebner, D.-I. Yeom, K. Kim, V. Petrov, "Mode-locking of solid-state lasers by single-walled carbon-nanotube based saturable absorbers," Quant. Electron. 42, 663 (2012).

  19. I. H. Baek, H. W. Lee, S. Bae, B. H. Hong, Y. H. Ahn, D.-I. Yeom, F. Rotermund, "Efficient mode-locking of sub-70-fs Ti:sapphire laser by graphene saturable absorber," Appl. Phys. Express 5, 032701 (2012).

  20. J.-Y. Seo, S.-H. Lee, M. Jazbinsek, H. Yun, J.-T. Kim, I.-H. Baek, F. Rotermund, O.-P. Kwon, “New Thiolated Nitrophenylhydrazone crystals for Nonlinear Optics,” Cryst. Growth Des. 20, 313 (2012).

  21. P.-J. Kim, J.-H. Jeong, M. Jazbinsek, S.-B. Choi, I.-H. Baek, J.-T. Kim, F. Rotermund, H. Yun, Y. S. Lee, P. Gunter, and O.-P. Kwon, "Highly efficient organic THz generator pumped at near-infrared: Quinolinium single crystals," Adv. Funct. Mater. 22, 200 (2012).

  22. W. B. Cho, J. W. Kim, H. W. Lee, S. Bae, B. H. Hong, S. Y. Choi, I. H. Baek, K. Kim, D.-I. Yeom, F. Rotemund, "High-quality, large-area monolayer graphene for efficient bulk laser mode-locking near 1.25 um," Opt. Lett. 36, 4089 (2011).

  23. K. S. Cho, P. Mandal, K. Kim, I. H. Baek, S. Lee, H. Lim, D. J. Cho, S. Kim, J. J. Lee, F. Rotermund, "Improved efficiency in GaAs solar cells by 1D and 2D nanopatterns fabricated by laser interference lithography," Opt. Commun. 284, 2608 (2011).

  24. I. H. Baek, S. Y. Choi, H. W. Lee, W. B. Cho, V. Petrov, A. Agnesi, V. Pasiskevicius, D.-I. Yeom, K. Kim, F. Rotermund, "Single-walled carbon nanotube saturable absorber assisted high-power mode-locking of a Ti:sapphire laser," Opt. Express 19, 7833 (2011).

  25. P.-J. Kim, J.-H. Jeong, M. Jazbinsek, S.-J. Kwon, H. Yun, J.-T. Kim, Y. S. Lee, I. H. Baek, F. Rotemund, O.-P. Kwon, "Acentric nonlinear optical N-benzyl stibazolium crystals with high enviromental stability and enhanced molecular nonlinearity in solid state," Cryst. Eng. Comm. 13, 444 (2011).

  26. N. T. Hong, I. H. Baek, F. Rotermund, K. H. Koh, S. Lee, "Femtosecond laser machining : A new technique to fabricate carbon nanotube based emitters," J. Vacuum Sci. and Tech. B 28, C2B38 (2010).

  27. S. H. Bae, I. H. Baek, S. Y. Choi, W. B. Cho, F. Rotermund, C. S. Yoon, "Efficient second-harmonic generation of ultrashort pulses with simultaneous quasi-phase matching and group velocity matching in periodic 90° domain structures of potassium niobate," Opt. Commun. 283, 1894 (2010).

  28. H. W. Lee, J. H. Yim, A. J. Kiran, I. H. Baek, S. Lee, D.-I. Yeom, Y. H. Ahn, K. Kim, J. Lee, H. Lim, F. Rotermund, "Bundling influence on ultrafast optical nonlinearities of single-walled carbon nanotubes in suspecsion and composite film," Appl. Phys. B 97, 157 (2009).