@article { ISI:000262220500007,
	title = {Plasmonic Laser Antennas and Related Devices},
	journal = {IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS},
	volume = {14},
	number = {6},
	year = {2008},
	month = {NOV-DEC},
	pages = {1448-1461},
	publisher = {IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC},
	type = {Review},
	address = {445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA},
	abstract = {This paper reviews recent work on device applications of optical antennas. Localized surface plasmon resonances of gold nanorod antennas resting on a silica glass substrate were modeled by finite difference time-domain simulations. A single gold nanorod of length 150 or 550 nm resonantly generates enhanced near fields when illuminated with light of 830 nm wavelength. A pair of these nanorods gives higher field enhancements due to capacitive coupling between them. Bowtie antennas that consist of a pair of triangular gold particles offer the best near-field confinement and enhancement. Plasmonic laser antennas based on the coupled nanorod antenna design were fabricated by focused ion beam lithography on the facet of a semiconductor laser diode operating at a wavelength of 830 nm. An optical spot size of few tens of nanometers was measured by apertureless near-field optical microscope. We have extended our work on plasmonic antenna into mid-infrared (mid-IR) wavelengths by implementing resonant nanorod and bowtie antennas on the facets of various quantum cascade lasers. Experiments show that this mid-IR device can provide an optical intensity confinement 70 times higher than that would be achieved with diffraction limited optics. Near-field intensities similar to 1 GW / cm(2) were estimated for both near-infrared and mid-IR plasmonic antennas. A fiber device that takes advantage of plasmonic resonances of gold nanorod arrays providing a high density of optical {\textquoteleft}{\textquoteleft}hot spots{\textquoteright}{\textquoteright} is proposed. Results of a systematic theoretical and experimental study of the reflection spectra of these arrays fabricated on a silica glass substrate are also presented. The family of these proof-of-concept plasmonic devices that we present here can be potentially useful in many applications including near-field optical microscopes, high-density optical data storage, surface enhanced Raman spectroscopy, heat-assisted magnetic recording, and spatially resolved absorption spectroscopy.},
	keywords = {Gold nanoparticles, near-field optics, surface plasmons (SPs), surface-enhanced Raman spectroscopy (SERS)},
	issn = {1077-260X},
	doi = {10.1109/JSTQE.2007.912747},
	author = {Cubukcu, Ertugrul and Nanfang Yu and Smythe, Elizabeth J. and Diehl, Laurent and Kenneth B. Crozier and Federico Capasso}
}
