Search Results - "Woehl, J. C"

The optical near-field of an aperture tip by Drezet, A, Nasse, M. J, Huant, S, Woehl, J. C

“…We use fluorescent nanospheres as scalar detectors for the electric-field intensity in order to probe the near-field of an optical tip used in aperture-type…”
Get full text

Diffraction by a small aperture in conical geometry: application to metal-coated tips used in near-field scanning optical microscopy by Drezet, A, Woehl, J C, Huant, S

“…Light diffraction through a subwavelength aperture located at the apex of a metallic screen with conical geometry is investigated theoretically. A method based…”
Get full text

Remote optical addressing of single nano-objects by Brun, M, Drezet, A, Mariette, H, Chevalier, N, Woehl, J. C, Huant, S

“…We present a scheme for remotely addressing single nano-objects by means of near-field optical microscopy that makes only use of one of the most fundamental…”
Get full text

Stark Effect on Single Molecules of Dibenzanthanthrene in a Naphthalene Crystal and in a n-Hexadecane Shpol'skii Matrix by Brunel, Ch, Tamarat, Ph, Lounis, B, Woehl, J. C, Orrit, M

“…We investigated the Stark effect on centrosymmetric dibenzanthanthrene molecules in naphthalene, a centrosymmetric crystal, where it is mainly quadratic, and…”
Get full text

Excitons and multi-excitons in single CdTe quantum dots probed by near-field spectroscopy by Brun, M, Huant, S, Woehl, J.C, Motte, J.-F, Marsal, L, Mariette, H

“…A near-field optical spectroscopy study of a single CdTe/ZnTe quantum dot at low temperatures is presented. While the photoluminescence spectrum at low…”
Get full text

Far‐field emission of a tapered optical fibre tip: a theoretical analysis by Drezet, A., Woehl, J. C., Huant, S.

“…The far‐field transmission pattern of a tapered optical tip with small aperture (radius ∼ < 40 nm) is modelled by solving Maxwell's equations in the radiation…”
Get full text

Low‐temperature near‐field spectroscopy of CdTe quantum dots by Brun, M., Huant, S., Woehl, J. C., Motte, J.‐F., Marsal, L., Mariette, H.

“…A near‐field optical microscope has been developed for operation at low temperature. This microscope is used to study the photoluminescence of CdTe‐based…”
Get full text

Experimental Determination of Internal Electric Fields in Ordered Systems: Myoglobin and Cytochrome C by Geissinger, P., Kohler, B.E., Woehl, J.C.

“…We have developed methods to determine internal molecular electric fields at the sites of probe molecules which were doped into various host matrices from the…”
Get full text

Diffraction by a small aperture in conical geometry: Application to metal coated tips used in near-field scanning optical microscopy by Drezet, A, Woehl, J. C, Huant, S

“…Light diffraction through a subwavelength aperture located at the apex of a metallic screen with conical geometry is investigated theoretically. A method based…”
Get full text

Diffraction of light by a planar aperture in a metallic screen by Drezet, A, Woehl, J. C, Huant, S

“…We present a complete derivation of the formula of Smythe [Phys.Rev.72, 1066 (1947)] giving the electromagnetic field diffracted by an aperture created in a…”
Get full text

Extension of Bethe's diffraction model to conical Geometry: application to near field optics by Drezet, A, Woehl, J. C, Huant, S

“…Europhys. Lett. 54, 736-740 (2001) The generality of the Bethe's two dipole model for light diffraction through a subwavelength aperture in a conducting plane…”
Get full text

Evaluation and Properties of a Model for the Determination of Internal Electric Fields in Proteins from the Stark Effect of Spectral Holes by Geissinger, P.

Get full text

Carrier-diffusion-limited remote optical addressing of single quantum dots by Brun, M, Chevalier, N, Drezet, A, Huant, S, Motte, J.-F, Mariette, H, Stark, M, Tinjod, F, Woehl, J.C

“…We present a scheme for remotely addressing single quantum dots (QDs) by means of near-field optical microscopy that simply makes use of the polarization of…”
Get full text

Effects of internal electric fields and electrostatic potentials on optical spectra of linear polyenes by Kohler, Bryan E., Woehl, Jörg C.

“…The distribution of the nuclear and electronic charges determine a molecule's chemical and physical behavior. The electric fields and electrostatic potentials…”
Get full text

Conjugation lengths in long polyene chains by Kohler, Bryan E., Woehl, Jörg C.

“…Since the low energy absorption spectrum of a linear polyene is dominated by the strongly allowed 1 1A g → 1 1B u transition (S 0 → S 2), it can be…”
Get full text

A systematic, quantum-mechanical, finite-order approach for the quantitative determination of molecular internal electric fields in guest–host systems from Stark spectroscopy by Wagie, Hannah E., Woehl, Jӧrg C., Geissinger, Peter

“…Within a host molecular system, such as cofactors in proteins, active sites in metal–organic frameworks, and dopants in semiconductor solids, a guest molecule…”
Get full text

In situ characterization of optical tips using single fluorescent nanobeads by Drezet, Aurélien, Huant, Serge, Woehl, Jörg C

“…Aperture-type near-field scanning optical microscopy (NSOM) can be used to image single dipolar emitters at a spatial resolution beyond the diffraction limit…”
Get full text

A quantum-mechanical model for the determination of internal electric fields at protein active sites from the Stark effect on persistent spectral holes by Geissinger, Peter, Woehl, Jörg C, Prince, Barry J

“…The Stark effect of spectral holes burnt in protoporphyrin IX (H 2-PPIX) substituted myoglobin is employed to determine quantitatively the internal electric…”
Get full text

The optical near-field of an aperture tip by Drezet, A, Nasse, M. J, Huant, S, Woehl, J. C

“…Europhys. Lett. 66, 41 (2004) We use fluorescent nanospheres as scalar detectors for the electric-field intensity in order to probe the near-field of an…”
Get full text

Effects of Electrostatic Fields and Potentials on the Electronic Energies of Conjugated Organic Molecules by Kohler, Bryan E, Woehl, Jörg C

“…Spectroscopic experiments that study the effect of an externally applied electric field on transition energies provide a wealth of information if carried out…”
Get full text