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Showing 25 to 36 of 210 entries
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Second harmonic generation from patterned GaAs inside a subwavelength metallic hole array.

Optics express

Fan W, Zhang S, Malloy KJ, Brueck SR, Panoiu NC, Osgood RM.
PMID: 19529346
Opt Express. 2006 Oct 16;14(21):9570-5. doi: 10.1364/oe.14.009570.

By extending GaAs dielectric posts with a large second-order nonlinear susceptibility through the holes of a subwavelength metallic hole array coupled to the metal surface-plasma wave, strong second harmonic (SH) signal is observed. The SH signal is strengthened as...

Supercontinuum generation in silicon photonic wires.

Optics express

Hsieh IW, Chen X, Liu X, Dadap JI, Panoiu NC, Chou CY, Xia F, Green WM, Vlasov YA, Osgood RM.
PMID: 19550808
Opt Express. 2007 Nov 12;15(23):15242-9. doi: 10.1364/oe.15.015242.

We observe spectral broadening of more than 350 nm, i.e., a 3/10-octave span, upon propagation of ultrashort 1.3-mum-wavelength optical pulses in a 4.7-mm-long silicon-photonic-wire waveguide. We measure the wavelength dependence of the spectral features and relate it to waveguide...

Optical negative-index bulk metamaterials consisting of 2D perforated metal-dielectric stacks.

Optics express

Zhang S, Fan W, Panoiu NC, Malloy KJ, Osgood RM, Brueck SR.
PMID: 19516859
Opt Express. 2006 Jul 24;14(15):6778-87. doi: 10.1364/oe.14.006778.

Numerical simulations of a near-infrared negative-index metamaterial (NIM) slab consisting of multiple layers of perforated metal-dielectric stacks exhibiting a small imaginary part of the index over the wavelength range for negative refraction are presented. A consistent effective index is...

Optically pumped Ce:LaF3 laser at 286 nm.

Optics letters

Ehrlich DJ, Moulton PF, Osgood RM.
PMID: 19693221
Opt Lett. 1980 Aug 01;5(8):339. doi: 10.1364/ol.5.000339.

No abstract available.

Meaningful similarity and interference in learning.

Journal of experimental psychology

OSGOOD CE.
PMID: 20995697
J Exp Psychol. 1946 Aug;36:277-301. doi: 10.1037/h0063154.

No abstract available.

Synthesis of a nanocar with an angled chassis. Toward circling movement.

Organic letters

Sasaki T, Osgood AJ, Alemany LB, Kelly KF, Tour JM.
PMID: 18081304
Org Lett. 2008 Jan 17;10(2):229-32. doi: 10.1021/ol702642r. Epub 2007 Dec 15.

Nanocars with an angled chassis have been synthesized and imaged using scanning tunneling microscopy. These angled chassis nanocars were designed to further our understanding of the directional control and surface-rolling capabilities of this class of nanomachines. The alkylated carbazole...

Resonant-plasmon field enhancement from asymmetrically illuminated conical metallic-probe tips.

Optics express

Roth RM, Panoiu NC, Adams MM, Osgood RM, Neacsu CC, Raschke MB.
PMID: 19516430
Opt Express. 2006 Apr 03;14(7):2921-31. doi: 10.1364/oe.14.002921.

Optical-field enhancement and confinement for an asymmetrically illuminated nanoscopic Au tip suspended over a planar Au substrate is investigated both numerically and experimentally. The spatial field distribution of the tip-sample system was calculated using the full 3D finite-difference time-domain...

Silicon-nitride surface passivation of submicrometer silicon waveguides for low-power optical switches.

Optics letters

Van Campenhout J, Green WM, Liu X, Assefa S, Osgood RM, Vlasov YA.
PMID: 19448812
Opt Lett. 2009 May 15;34(10):1534-6. doi: 10.1364/ol.34.001534.

We report on a Si(3)N(4)-based surface-passivation technique for increasing free-carrier lifetimes in submicrometer silicon-on-insulator waveguides by up to 2 orders of magnitude. The carrier lifetime was measured by injecting free carriers into a critically coupled ring resonator through photoexcitation...

Photoinduced-reaction dynamics of halogenated alkanes on iron oxide surfaces: CH3I on Fe3O4(111)-(2x2).

The journal of physical chemistry. B

Totir GG, Le Y, Osgood RM.
PMID: 16851992
J Phys Chem B. 2005 May 05;109(17):8452-61. doi: 10.1021/jp045326z.

The adsorption, thermal chemistry, and photoreaction dynamics of methyl iodide on the (2x2) magnetite termination of natural single-crystal hematite have been investigated by time-of-flight quadrupole mass spectrometry (TOF-QMS), temperature-programmed desorption (TPD) and Auger electron spectroscopy (AES). The methyl iodide...

Self-phase-modulation in submicron silicon-on-insulator photonic wires.

Optics express

Dulkeith E, Vlasov YA, Chen X, Panoiu NC, Osgood RM.
PMID: 19516720
Opt Express. 2006 Jun 12;14(12):5524-34. doi: 10.1364/oe.14.005524.

We measure the transmission of ps-pulses through silicon-on-insulator submicron waveguides for excitation wavelengths between 1400 and 1650 nm and peak powers covering four orders of magnitude. Self-phase-modulation induced spectral broadening is found to be significant at coupled peak powers...

Experimental demonstration of near-infrared negative-index metamaterials.

Physical review letters

Zhang S, Fan W, Panoiu NC, Malloy KJ, Osgood RM, Brueck SR.
PMID: 16197179
Phys Rev Lett. 2005 Sep 23;95(13):137404. doi: 10.1103/PhysRevLett.95.137404. Epub 2005 Sep 23.

Metal-based negative refractive-index materials have been extensively studied in the microwave region. However, negative-index metamaterials have not been realized at near-IR or visible frequencies due to difficulties of fabrication and to the generally poor optical properties of metals at...

Near-infrared double negative metamaterials.

Optics express

Zhang S, Fan W, Malloy KJ, Brueck SR, Panoiu NC, Osgood RM.
PMID: 19498480
Opt Express. 2005 Jun 27;13(13):4922-30. doi: 10.1364/opex.13.004922.

We numerically demonstrate a metamaterial with both negative epsilon and negative mu over an overlapping near-infrared wavelength range resulting in a low loss negative-index material. Parametric studies optimizing this negative index are presented. This structure can be easily fabricated...

Showing 25 to 36 of 210 entries