Dong Il YeomSummaryAffiliation: Ajou University Country: Korea Publications
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Publications
Tunable gratings in a hollow-core photonic bandgap fiber based on acousto-optic interactionDong Il Yeom
Division of Energy Systems Research, Ajou University, Yongtong Gu, Suwon, Korea
Opt Express 17:9933-9. 2009..54 MHz. The low dispersive properties and the mode filed distributions of the higher-order guided modes of the air-core PBGF in the experiment show reasonable agreement with the simulation results...
Graphene-filled hollow optical fiber saturable absorber for efficient soliton fiber laser mode-lockingSun Young Choi
Division of Energy Systems Research, Ajou University, 443 749 Suwon, South Korea
Opt Express 20:5652-7. 2012..9-nm spectral bandwidth and its maximum output power is measured up to 80 mW. We also observe passive harmonic mode-locking of soliton laser delivering stable pulses with a repetition rate of 506.9 MHz at 33rd harmonics...
High-quality, large-area monolayer graphene for efficient bulk laser mode-locking near 1.25 μmWon Bae Cho
Department of Physics and Division of Energy Systems Research, Ajou University, Suwon, South Korea
Opt Lett 36:4089-91. 2011..The nonlinear optical characteristics of the monolayer graphene saturable absorber and the mode-locked operation were then compared with the case of the bilayer graphene saturable absorber...
Toward higher-order passive harmonic mode-locking of a soliton fiber laserChang Su Jun
Opt Lett 37:1862-4. 2012..Stable pulses with a ∼5 GHz repetition rate and 40 dB of super-mode suppression are demonstrated with only ∼400 mW pump power in a single-clad fiber laser...
All-fiber Er-doped dissipative soliton laser based on evanescent field interaction with carbon nanotube saturable absorberJu Hee Im
Division of Energy Systems Research, Ajou University, 443 749 Suwon, South Korea
Opt Express 18:22141-6. 2010..6 mW, corresponding to pulse energy about 2.35 nJ. Highly chirped 5.8 ps pulses are generated with a spectral bandwidth of 13.9 nm and compressed down to 226 fs using additional length of conventional optical fiber at extra-cavity...
Single-walled carbon nanotube saturable absorber assisted high-power mode-locking of a Ti:sapphire laserIn Hyung Baek
Division of Energy Systems Research, Ajou University, San 5 Wonchun, 443 749 Suwon, South Korea
Opt Express 19:7833-8. 2011..We achieved output powers from the SWCNT-SA mode-locked laser as high as 600 mW with a slope efficiency of 26%. The characteristics of SWCNT-SA-assisted mode-locking were compared with those of Kerr-lens mode-locking without SWCNT-SA...
Femtosecond mode-locked fiber laser employing a hollow optical fiber filled with carbon nanotube dispersion as saturable absorberSun Young Choi
Division of Energy Systems Research, Ajou University, Yongtong Gu, Suwon, Korea
Opt Express 17:21788-93. 2009..5 nm and 490 fs, respectively, with a repetition rate of 18.5 MHz...
