| Records |
| Author |
Smolyaninov, I. I.; Zayats, A. V.; Stanishevsky, A.; Davis, C. C. |
| Title |
Optical control of photon tunneling through an array of nanometer-scale cylindrical channels |
Type |
Journal Article |
| Year |
2002 |
Publication |
Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
| Volume |
66 |
Issue |
20 |
Pages |
205414_1-205414_5 |
Keywords  |
optical mixing |
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1098-0121 |
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499 |
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| Author |
Su, M. Y.; Carter, S. G.; Sherwin, M. S. |
| Title |
Strong-field terahertz optical mixing in excitons |
Type |
Journal Article |
| Year |
2003 |
Publication |
Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
| Volume |
67 |
Issue |
12 |
Pages |
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| Keywords |
optical mixing |
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1098-0121 |
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no |
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500 |
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| Author |
Ciulin, V.; Carter, S. G.; Sherwin, M. S. |
| Title |
Terahertz optical mixing in biased GaAs single quantum wells |
Type |
Journal Article |
| Year |
2004 |
Publication |
Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
| Volume |
70 |
Issue |
11 |
Pages |
115312-(1-6) |
| Keywords |
optical mixing |
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1098-0121 |
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no |
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501 |
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| Author |
Novotny, Lukas |
| Title |
Effective wavelength scaling for optical antennas |
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Journal Article |
| Year |
2007 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
| Volume |
98 |
Issue |
26 |
Pages |
266802(1-4) |
| Keywords |
optical antennas |
| Abstract |
In antenna theory, antenna parameters are directly related to the wavelength λ of incident radiation, but this scaling fails at optical frequencies where metals behave as strongly coupled plasmas. In this Letter we show that antenna designs can be transferred to the optical frequency regime by replacing λ by a linearly scaled effective wavelength λeff=n1+n2λ/λp, with λp being the plasma wavelength and n1, n2 being coefficients that depend on geometry and material properties. It is assumed that the antenna is made of linear segments with radii Râ‰<aa>λ. Optical antennas hold great promise for increasing the efficiency of photovoltaics, light-emitting devices, and optical sensors. |
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RPLAB @ gujma @ |
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749 |
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Beck, M.; Rousseau, I.; Klammer, M.; Leiderer, P.; Mittendorff, M.; Winnerl, S.; Helm, M.; Gol'tsman, G.N.; Demsar, J. |
| Title |
Transient increase of the energy gap of superconducting NbN thin films excited by resonant narrow-band terahertz pulses |
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Journal Article |
| Year |
2013 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
| Volume |
110 |
Issue |
26 |
Pages |
267003 (1 to 5) |
| Keywords |
NbN thin films, energy gap |
| Abstract |
Observations of radiation-enhanced superconductivity have thus far been limited to a few type-I superconductors (Al, Sn) excited at frequencies between the inelastic scattering rate and the superconducting gap frequency 2Delta/h. Utilizing intense, narrow-band, picosecond, terahertz pulses, tuned to just below and above 2Delta/h of a BCS superconductor NbN, we demonstrate that the superconducting gap can be transiently increased also in a type-II dirty-limit superconductor. The effect is particularly pronounced at higher temperatures and is attributed to radiation induced nonthermal electron distribution persisting on a 100 ps time scale. |
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Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457, Germany |
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0031-9007 |
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PMID:23848912 |
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1370 |
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