Silicon-On-Chip Lasers

We research on various novel laser diodes integrated on silicon platform. For efficient light generation, a III-V gain material is heterogeneously integrated onto a silicon wafer in CMOS compatible ways. For realizing novel functionalities, dielectric nano-structures are employed to manipulate the properties of micro/nano optical cavities. If necessary, these lasers can be integrated with electronics as backend processing. Their applications include optical interconnects, sensor chips, bio/medical diagnosis chips, and 3D imaging. The lasers of current interests are listed below:

Ultra-high speed lasers aiming at >100 Gbit/s
Ultra-small size lasers
High-power single-mode laser for sensing applications
MEMS-based wavelength-tunable laser, aiming at >100nm tuning range

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]
G. C. Park, W. Xue, M. Piels, D. Zibar, J. Mørk, E. Semenova, and I.-S. Chung*, “Ultrahigh-speed Si-integrated on-chip laser with tailored dynamic characteristics,” Scientific Reports 6, 38801 (2016). Demo of record high speed among Si-on-chip lasers. [link]
G. C. Park, W. Xue, A. Taghizadeh, E. Semenova, K. Yvind, J. Mørk, and I.-S. Chung*, “Hybrid vertical-cavity laser with lateral emission into a silicon waveguide,” Laser and Photonics Reviews9(3), L11-L15 (2015). World 2nd demo of vertical-cavity laser laterally emitting into a silicon waveguide (IF: 8.529). [link]
I.-S. Chung* and J. Mørk, “Silicon-photonics light source realized by III-V/Si-grating-mirror laser,” Applied Physics Letters. 97(15), 151113 (2010). [link]
T. Ansbæk, I.-S. Chung, E. S. Semenova, O. H. and K. Yvind*, “Resonant MEMS tunable VCSEL,” IEEE J. Sel. Top. Quant. Electron. 19(4) 1702306 (2013). [link]
I.-S. Chung*, V. Iakovlev, A. Sirbu, A. Mereuta, A. Caliman, E. Kapon, and J. Mørk, “Broadband MEMS-tunable high-index-contrast subwavelength grating long-wavelength VCSEL,” IEEE J. Quantum Electron. 46, 1245-1253 (2010). [link]