Nanophotonics

We are interested in understanding new phenomena in nanophotonics. Structures of our interest typically have a characteristic length scale of sub-wavelength where rich light-matter interactions occur. Especially, our group is one of leading frontiers on nano-structures known as high contrast gratings. Recent understandings and new findings have been applied to design novel laser and detector structures, leading to demonstrations of world first devices and record performances. Subjects of our recent interests are listed below:

High contrast grating
Bound-states in the continuum
Novel micro/nano cavities
High-Q dielectric nano-antenna
Design of epitaxial wafers for high speed lasers

References

A. Taghizadeh and I.-S. Chung*, “Quasi bound states in the continuum with few unit cells of photonic crystal slab,” Applied Physics Letters 111, 031114 (2017). [link]
A. Taghizadeh and I.-S. Chung*, “Dynamic dispersion engineering in coupled vertical cavities employing a high-contrast grating,” Scientific Reports 7, 2123 (2017). [link]
G. C. Park, A. Taghizadeh, and I.-S. Chung*, “Hybrid grating reflectors: Origin of ultrabroad stopband,” Applied Physics Letters 108 (14), 141108 (2016). [link]
I.-S. Chung*, “Study on differences between high contrast grating reflectors for TM and TE polarizations and their impact on VCSEL designs,” Optics Express 23(13), 16730 (2015). [link]
A. Taghizadeh, J. Mørk, and I.-S. Chung*, “Ultracompact resonator with high quality-factor based on a hybrid grating structure,” Optics Express 23(11), 14913 (2015). [link]