CLEO-PR 2013 Hiroshi Kudo

Wl1-1 Diamond Nanophotonics and Quantum Optics, Marko Loncar
As the title suggests, this is a research aiming at quantum applications using diamond structures, and the fabrication technology is simply amazing. The ring resonators and one-dimensional photonic crystals, which were conventionally fabricated by silicon, were achieved by using diamond, and in the case of silica race-track ring resonators, Q=1.25×105 was achieved by covering the surface with SiO2 as a cladding. (Without SiO2 cladding, Q=3.0×104). He also reported the recent achievement of Q > 106 and its application to optical frequency comb with low noise such as heat.

reference data
∙ S. Y. Lee et al, "Integrated High Quality Factor Optical Resonators in Diamond," Nano Letters, DOI: 10.1021/nl3037454 (2013).
... M. J. Burek et al. "Free-Standing Mechanical and Photonic Nanostructures in Single-Crystal Diamond," Nano Letters, vol. 12, 6084 (2012).
MI1-1 Hybrid III-V/SOI Nanophotonics: Lasers, Switches and Memories, F. Raineri et al, SOI (Silicon on Insulator) is, as the name implies, Si with an embedded oxide film, a technology developed by IBM, and has contributed greatly to high-speed communication and low power consumption of LSIs. In this paper, we report experimental results of laser and memory operation using InP-based 1D photonic crystals with InGaAsP/InGaSa quantum wells embedded on SOI waveguides, which emit light at 1.55 um on the substrate, and confirmed memory operation at 1 fJ and over 2 sec by combining III-V semiconductor and SOI. sec by combining III-V semiconductors and SOI.

reference data
Y. Haliouaet al., "Hybrid III-V semiconductor/silicon nanolasers," Opt. Express 19, 9221-9231 (2011).

...Wl4-1 All-Color Plasmonic Nanolasers with Ultralow Thresholds, Yu-Jung Lu et al,
Generally, coupling of light and plasmon has a problem of large confinement loss in three dimensions. The epitaxial approach used in this study significantly reduces the loss, enabling highly efficient oscillation of plasmonic lasers. The device structure consists of InGaN and GaN rod nanorods placed on an Ag substrate on a silicon substrate with a thin silica layer in between, enabling highly efficient confinement of plasmons in the silica layer. By controlling the shape of the nanorods, the laser wavelength can be controlled from red to blue, and the operation was confirmed with low-power CW light (less than 10 W/cm2 in the case of blue).
reference data
Y.-J. Lu et al, "Single InGaN nanodisk light emitting diodes as full-color subwavelength light sources," Appl. Phys. Lett. 98, 233101, 2011.
Y.-J. Lu et al, "Plasmonic nanolaser using epitaxially grown silver film," Science, 337, 450-453, 2012.
...Wl4-2 Electrically Pumped Metallo-Dielectric Pedestal Nanolasers, Qing Gu et al,

...Wl4-2 Electrically Pumped Metallo-Dielectric Pedestal Nanolasers, Qing Gu et al,
We have succeeded in fabricating a nanocavity with two disk structures by two-step InP etching. The disk part is made of InGaAs, and is intended for laser applications. The Q-value and the threshold of laser oscillation were numerically determined by changing the diameters of the upper and lower disks, and the shape of the resonator was investigated. The laser oscillation operation was also confirmed using the fabricated resonator.

Wl4-3 Fabrication and Application of a Horizontal Plasmonic Air-Slot Ring Resonator, Jaehak Lee et al,
The Q value is still several tens both analytically and experimentally. The latter half of the presentation was a report on the applications, showing the tendency that the amount of shift increases when antibodies are attached to the resonator surface, and that it is useful for bio-sensing applications.

Wl4-4 Active Plasmon Devices, Kenzo Yamaguchi et al,
The Q value is still several tens both analytically and experimentally. The latter half of the presentation was a report on the applications, showing the tendency that the amount of shift increases when antibodies are attached to the resonator surface, and that it is useful for bio-sensing applications.

Wl4-4 Active Plasmon Devices, Kenzo Yamaguchi et al,
This is a report of numerical analysis of mechanically controlled nanoscale grating structures by applying an external electric field. The resonance frequency of surface plasmons generated around the grating structure changes with the change of the structure. The fabrication of devices using ion beams has also been achieved, and in the report, a moving image was shown of the structure change by connecting the wiring to the device and applying an external electric field.

∙ Wl4-6 Plasmonic Properties and Biosensing od Gold Elliptical Nanoring Arrays, Chia-Yang et al,
This is a report on the numerical analysis of the intensity of plasmon resonance and its wavelength shift for each polarization of light, using the length and width (R) of the ring structure as a variable. The analysis was performed for the circular structure and the circular hole structure to better understand the characteristics of the ring. As a conclusion, the tighter the horizontal to vertical ratio is, the better, and it seems to be considered for application to biosensing.