49 citations · 315 across the 41 of their papers we have counts for
4 papers · 2 filters
Influence of Pulse width and Rabi frequency on the Population dynamics of three-level system in two-photon absorption process
Nam-Chol Kim, Myong-Chol Ko, Song-Jin Im +1
We investigate the population dynamics of the three-level system in the two-photon absorption (TPA) process, mainly focusing the influence of pulse width and Rabi frequency on the…
Exciton-Plasmon Coupling Effects on the Nonlinear Optical Susceptibility of Hybrid Quantum Dot-Metallic Nanoparticle System
Nam-Chol Kim, Myong-Chol Ko, Song-Jin Im +1
We have studied theoretically the exciton-plasmon coupling effects on the third-order optical nonlinearity of a coherently coupled hybrid system of a metal nanoparticle and a semic…
Document watermarking based on digital holographic principle
Chol-Su Kim, Kwang-Hyok Jong, Song-Jin Im
A new method for document watermarking based on the digital Fourier hologram is proposed. It applies the methods of digital image watermarking based on holographic principle presen…
Micro-joule sub-10-fs VUV pulse generation by MW pump pulse using highly efficient chirped-four-wave mixing in hollow-core photonic crystal fibers
Song-Jin Im
We theoretically study chirped four-wave mixing for VUV pulse generation in hollow-core photonic crystal fibers. We predict the generation of sub-10-fs VUV pulses with energy of up…