Concept

Two-photon absorption

Related publications (165)

On the Application of a Monolithic Array for Detecting Intensity-Correlated Photons Emitted by Different Source Types

It is not widely appreciated that many subtleties are involved in the accurate measurement of intensity-correlated photons; even for the original experiments of Hanbury Brown and Twiss (HBT). Using a monolithic 4x4 array of single-photon avalanche diodes ( ...

2009

Coexisting nonequilibrium condensates with long-range spatial coherence in semiconductor microcavities

Benoît Marie Joseph Deveaud, Konstantinos Lagoudakis, Barbara Pietka

Real- and momentum-space spectrally resolved images of microcavity polariton emission in the regime of condensation are investigated under nonresonant excitation using a laser source with reduced intensity fluctuations on the time scale of the exciton life ...

2009

Conformational flexibility of a rotaxane thread probed by electronic spectroscopy in helium nanodroplets

Marcel Drabbels

Ultra-high-resolution spectroscopic studies have been performed to elucidate the conformational landscape of the succinamide-based thread 1 that is frequently employed in mechanically interlocked molecular assemblies. We show how dissolving single molecule ...

American Chemical Society2009

Electronic structure of La1.48Nd0.4Sr0.12CuO4 probed by high- and low-energy angle-resolved photoelectron spectroscopy

Joël Mesot, Johan Juul Chang, Martin Mansson

We present angle-resolved photoelectron spectroscopy data probing the electronic structure of the Nd-substituted high-T-c cuprate La1.48Nd0.4Sr0.12CuO4. Data have been acquired at low and high photon energies, h nu=55 and 500 eV, respectively. The two extr ...

2009

Second harmonic generating (SHG) Nanoprobes: A new tool for biomedical imaging

Demetri Psaltis, Ye Pu

Cornea functions as an outermost lens and plays an important role in vision. For cornea diagnosis and treatment, a microscopic imaging system with cellular resolution and high eye safety is strongly desired. Recently, the cell morphology of corneal epithel ...

2009

"Plug and Play" single photons at 1.3 mu m approaching gigahertz operation

Blandine Alloing

We report a "plug and play" single photon source, fully integrated with an optical fiber, emitting at 1.3 mu m. Micropillars were patterned on a single layer InAs quantum dot wafer to guarantee a single pillar per fiber core. The single exciton peak filter ...

American Institute of Physics2008

Room temperature polariton lasing in a GaN/AlGaN multiple quantum well microcavity

Nicolas Grandjean, Jean-François Carlin, Raphaël Butté, Eric Feltin, Gabriel Christmann

The authors report room temperature polariton lasing at lambda similar to 345 nm in a hybrid AlInN/AlGaN multiple quantum well microcavity (MQW-MC) containing a GaN/AlGaN MQW active region, i.e., the achievement under nonresonant optical excitation of cohe ...

2008

Photon Antibunching in the Photoluminescence Spectra of a Single Carbon Nanotube

Christophe Marcel Georges Galland

We report the first observation of photon antibunching in the photoluminescence from single carbon nanotubes. The emergence of a fast luminescence decay component under strong optical excitation indicates that Auger processes are partially responsible for ...

American Physical Society2008

First-principles theory of infrared absorption spectra at surfaces and interfaces: Application to the Si(100): H2O surface

Alfredo Pasquarello

We calculate the transverse and the longitudinal infrared absorption spectra of the hydrated silicon surface using a first-principles approach. The absorption spectra are computed for two different configurations of water molecules dissociatively chemisorb ...

2008

Photoluminescence from a single InGaAs epitaxial quantum rod

Microphotoluminescence (mu-PL) experiment has been performed on a structure with InGaAs/GaAs epitaxial quantum rods (quantum dots with the aspect ratio as high as 4.1) grown by depositing short-period InAs/GaAs superlattice by molecular beam epitaxy on GaA ...

2008

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