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Milliwatt-level fiber-coupled laser power from photonic crystal band-edge laser.
Kim, Sunghwan,Ahn, Sungmo,Lee, Jeongkug,Jeon, Heonsu,Regreny, Philippe,Seassal, Christian,Augendre, Emmanuel,Di Cioccio, Lea Optical Society of America 2011 Optics express Vol.19 No.3
<P>We report unprecedentedly high output powers measured from large area two-dimensional square-lattice photonic-crystal band-edge lasers (BELs), patterned by holographic lithography. In order to ensure mechanical rigidity, the BELs were fabricated in an InP-based epilayer bonded onto a fused silica substrate beforehand. The BEL devices, employing the surface-emitting ?-point monopole band-edge mode, provide a fiber-coupled single mode output power as high as 2.6 mW and an external differential quantum efficiency of ~4%. The results of a three-dimensional finite-difference time-domain simulation agree with the experimental observation that the large BELs are beneficial for achieving both high power output and high differential quantum efficiency.</P>
Subwavelength Plasmonic Lasing from a Semiconductor Nanodisk with Silver Nanopan Cavity
Kwon, Soon-Hong,Kang, Ju-Hyung,Seassal, Christian,Kim, Sun-Kyung,Regreny, Philippe,Lee, Yong-Hee,Lieber, Charles M.,Park, Hong-Gyu American Chemical Society 2010 NANO LETTERS Vol.10 No.9
<P>We report the experimental demonstration of an optically pumped silver-nanopan plasmonic laser with a subwavelength mode volume of 0.56(λ/2<I>n</I>)<SUP>3</SUP>. 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.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2010/nalefd.2010.10.issue-9/nl1021706/production/images/medium/nl-2010-021706_0005.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl1021706'>ACS Electronic Supporting Info</A></P>