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Journal of Materials Science and Nanotechnology | Volume: 2
August 23-24, 2018 | Paris, France
Laser, Optics and Photonics
International Conference on
I
nfrared (IR) detection has many important applications
for military, communication, astronomy and medicine.
Currently infrared detections are mainly based low-
bandgap semiconductors like III-V, II-VI, and so on, which
mostly rely on expensive apparatuses for epitaxial growth
and are disadvantageous for their complicated processes,
and complex device structures. Here we present a novel
approach that combines silicon photonics and localized
surface plasmon resonance (LSPR) structure to achieve
ultra-broadband IR detection. LSPR structure has been
widely used to increase the absorption of incident photons
in many photoactive devices. However, existing LSPR is only
induced in a small designed wavelength range or polarized
incident light. Our novel concept applies a 3D metallic array
structure. The varying length of metallic structures can excite
LSPR with ultra-broadband response. Also, polarization-
insensitive detection as well as increased photo response
in the infrared spectrum is realized under special metallic
structure, 2D periodic array, and 3D optical cavity effect.
Through the strong induced LSPR’s, we further fabricate
the Silicon based schottky photodetector that is able to
detect photons well below the schottky barrier height for
detection in the mid-infrared range. The detection spectral
range covers from visible to over 4 UMS in wavelength.
Speaker Biography
Ching Fuh Lin obtained the B.S. from National Taiwan University in 1983, and the
M.S. and PhD from Cornell University, Ithaca, NY, in 1989 and 1993, respectively all in
electrical engineering. He is the founding director of Innovative Photonics Advanced
Research Centre (i-PARC) and a joint distinguished professor in the Graduate Institute
of Photonics and Optoelectronics, Graduate Institute of Electronics Engineering, and
Department of Electrical Engineering at National Taiwan University. His major research
area is in photonics, including silicon-based photonics, solar cells and applications
for drones, broadband semiconductor lasers and optical amplifiers, etc. He is a
fellow of IEEE, a fellow of SPIE, and member of Asia-Pacific Academy of Materials.
He has published over 180 journal papers and 500 conference papers and holds
more than 70 patents. He is the author of several books and obtained many awards.
e:
lincf@ntu.edu.twChing Fuh Lin
Hung Chieh Chuang, Meng Jie Lin
and
Po Jui Huang
National Taiwan University, Taiwan
Silicon based infrared detection with very broadband response using plasmonic
resonance
Notes: