34 citations · 70 across the 11 of their papers we have counts for
6 papers · 1 filter
Generation of a retro-reflected wave by interaction of an evanescent wave with a sub-wavelength structure
Young-Gu Ju, Thomas Milster
Numerical calculations were performed to examine the mechanisms for generation of a retro-reflected wave from the interaction of an evanescent wave with a sub-wavelength structure…
The effects of cavity on the etendue of a light source
Ui-Hyung Lee, Young-Gu Ju
The simulation proposes that the cylindrical cavity around a circular light source can decreases the divergence angle without changing the emission energy and source size. This res…
Effects of metallic absorption and the corrugated layer on the optical extraction efficiency of organic light-emitting diodes
Baek-Woon Lee, Young-Gu Ju
The absorption of a metallic cathode in OLEDs is analyzed by using FDTD calculation. As the light propagates parallel to the layer, the intensity of Ez polarization decreases rapid…
Analysis of a metallic nano-rod polarizer using finite-difference-time-domain method
Young-Gu Ju
The polarization behavior of metallic nano-rods has been analyzed by means of the finite-difference-time-domain method. When the average spacing between the nano-rods is less than…
Numerical analysis of high-index nanocomposite encapsulant for light-emitting diodes
Young-Gu Ju, Guilhem Almuneau, Tae-Hoon Kim +1
We used two-dimensional Finte-Difference-Time-Domain (FDTD) software to study the transition behavior of nano-particles from scatterers to an optically uniform medium. We measured…
Evaluation scheme for the design of high power single mode vertical-cavity surface-emitting lasers
Young-Gu Ju
A very simple and efficient evaluation procedure is suggested for the design of high power single mode VCSELs by reviewing the physical mechanisms that governs mode transition and…