Subwavelength plasmonic lasing from a semiconductor nanodisk with silver nanopan cavity.
We report the experimental demonstration of an optically pumped silver-nanopan plasmonic laser with a subwavelength mode volume of 0.56(lambda/2n)(3). The lasing mode is clearly identified as a whispering-gallery plasmonic mode confined at the bottom of the silver nanopan from measurements of the spectrum, mode image, and polarization state, as well as agreement with numerical simulations. In addition, the significant temperature-dependent lasing threshold of the plasmonic mode contrasts and distinguishes them from optical modes. Our demonstration and understanding of these subwavelength plasmonic lasers represent a significant step toward faster, smaller coherent light sources.
Kwon
Soon-Hong
SH
Department of Physics, Korea University, Seoul 136-701, Korea.
Kang
Ju-Hyung
JH
Seassal
Christian
C
Kim
Sun-Kyung
SK
Regreny
Philippe
P
Lee
Yong-Hee
YH
Lieber
Charles M
CM
Park
Hong-Gyu
HG