Surface Plasmon Hybridization of Whispering Gallery Mode Microdisk Laser - Abstract

Surface Plasmon Hybridization of Whispering Gallery Mode Microdisk Laser Oka Kurniawan, Iftikhar Ahmed, and Li Er Ping Institute of High Performance Computing, A*STAR, Singapore [email protected] The motivation to obtain an integrated surface plasmon source leads us to study the effects of metal layers on microdisk lasers. In the current state of art, most experiments couple light from free-space to plasmonic devices either through prism, scatterings, or gratings. An on chip integrated surface plasmon source will eliminate the complexity of coupling light from free space. We found that a device made of microdisk laser with metal layers has the potential of acting as an on chip integrated surface plasmon source (Fig. 1). In this work, we study the effects of metal layers on microdisk laser. Fig. 1. Microdisk laser with two metal layer attached. Dark regions indicate metal layers. Fig. 4. Intensity spectrum comparison of conventional microdisk and plasmonic microdisk. Fig. 2. Total electric field distribution in conventional microdisk laser. Fig. 3. Total electric field distribution in microdisk laser with two metal layers attached. It is found that metal layers hybridize the whispering gallery mode (WGM) of the conventional microdisk laser with surface plasmon mode. Fig. 2 shows the WGM of a conventional microdisk laser while Fig. 3 shows the corresponding hybridized surface plasmon mode when two metal layers are attached to the microdisk. The dominant electric field changes from the radial direction to the normal direction (E z ) of the microdisk plane. Fig. 4 shows that the normal component of the electric field (E z ) at wavelength 1.47 μm is amplified by about 20,000 times due to the presence of the metallic layers. We also observed that the surface plasmon modes build up with time and compete with losses until they reach a steady state. The surface plasmon modes can be coupled easily to other plasmonic waveguides and hence have the potential to be the surface plasmon source for plasmonic applications.

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abstract for Photonics Global 2010 on surface plasmon hybridization inside microdisk laser with metal layers.

Transcript of Surface Plasmon Hybridization of Whispering Gallery Mode Microdisk Laser - Abstract

Surface Plasmon Hybridization of Whispering Gallery Mode Microdisk Laser

Oka Kurniawan, Iftikhar Ahmed, and Li Er PingInstitute of High Performance Computing, A*STAR, Singapore

[email protected]

The motivation to obtain an integrated surface plasmon source leads us to study the effects of metal layers on microdisk lasers. In the current state of art, most experiments couple light from free-space to plasmonic devices either through prism, scatterings, or gratings. An on chip integrated surface plasmon source will eliminate the complexity of coupling light from free space. We found that a device made of microdisk laser with metal layers has the potential of acting as an on chip integrated surface plasmon source (Fig. 1). In this work, we study the effects of metal layers on microdisk laser.

Fig. 1. Microdisk laser with two metal layer attached. Dark regions indicate metal layers.

Fig. 4. Intensity spectrum comparison of conventional microdisk and plasmonic microdisk.

Fig. 2. Total electric field distribution in conventional microdisk laser.

Fig. 3. Total electric field distribution in microdisk laser with two metal layers attached.

It is found that metal layers hybridize the whispering gallery mode (WGM) of the conventional microdisk laser with surface plasmon mode. Fig. 2 shows the WGM of a conventional microdisk laser while Fig. 3 shows the corresponding hybridized surface plasmon mode when two metal layers are attached to the microdisk. The dominant electric field changes from the radial direction to the normal direction (Ez) of the microdisk plane. Fig. 4 shows that the normal component of the electric field (Ez) at wavelength 1.47 μm is amplified by about 20,000 times due to the presence of the metallic layers. We also observed that the surface plasmon modes build up with time and compete with losses until they reach a steady state. The surface plasmon modes can be coupled easily to other plasmonic waveguides and hence have the potential to be the surface plasmon source for plasmonic applications.