Results 11 to 20 of about 132,317 (296)

Stimulated emission tomography: beyond polarization [PDF]

Optics Letters, 2018
In this work we demonstrate the use of stimulated emission tomography to characterize a hyper-entangled state generated by spontaneous parametric down-conversion in a CW-pumped source. In particular, we consider the generation of hyper-entangled states consisting of photon pairs entangled in polarisation and path. These results extend the capability of
Ciampini M. A., Geraldi A., Cimini V., Macchiavello C., Sipe J. E., Liscidini M., Mataloni P.   +6 more
core   +9 more sources

Terahertz transient stimulated emission from doped silicon [PDF]

APL Photonics, 2020
Transient-type stimulated emission in the terahertz (THz) frequency range has been achieved from phosphorus doped silicon crystals under optical excitation by a few-picosecond-long pulses generated by the infrared free electron lasers FELIX and CLIO. The
S. G. Pavlov, N. Deßmann, A. Pohl, R. Kh. Zhukavin, T. O. Klaassen, N. V. Abrosimov, H. Riemann, B. Redlich, A. F. G. van der Meer, J.-M. Ortega, R. Prazeres, E. E. Orlova, A. V. Muraviev, V. N. Shastin, H.-W. Hübers   +14 more
doaj   +2 more sources

Field Emission and Emission-Stimulated Desorption of ZnO Nanomaterials [PDF]

Applied Sciences, 2018
Compared with other field-emission nanomaterials, 1D ZnO nanomaterials have some unique properties—such as high melting point, high thermal and chemical stability, and ambient insensitivity—which means they have promising potential applications as field ...
Nannan Li, Xiaozhao Li, Baoqing Zeng
doaj   +2 more sources

Stimulated emission from nitrogen-vacancy centres in diamond [PDF]

Nature Communications, 2017
Here Jeskeet al. show both theoretical and experimental evidence for stimulated emission from negatively charged nitrogen vacancy centres using light in the phonon sidebands around 700 nm, demonstrating its suitability as a laser medium.
Jan Jeske, Desmond W. M. Lau, Xavier Vidal, Liam P. McGuinness, Philipp Reineck, Brett C. Johnson, Marcus W. Doherty, Jeffrey C. McCallum, Shinobu Onoda, Fedor Jelezko, Takeshi Ohshima, Thomas Volz, Jared H. Cole, Brant C. Gibson, Andrew D. Greentree   +14 more
doaj   +2 more sources

Stimulated emission from hexagonal silicon-germanium nanowires [PDF]

Communications Physics
Hexagonal crystal phase silicon-germanium (hex-SiGe) features efficient direct bandgap emission between 1.5 and 3.4 µm. For expanding its application potential, the key challenge is to demonstrate material gain for enabling a hex-SiGe semiconductor laser.
Marvin A. J. van Tilburg, Riccardo Farina, Victor T. van Lange, Wouter H. J. Peeters, Steffen Meder, Marvin M. Jansen, Marcel A. Verheijen, M. Vettori, Jonathan J. Finley, Erik. P. A. M. Bakkers, Jos. E. M. Haverkort   +10 more
doaj   +2 more sources

EUV stimulated emission from MgO pumped by FEL pulses [PDF]

Structural Dynamics, 2017
Stimulated emission is a fundamental process in nature that deserves to be investigated and understood in the extreme ultra-violet (EUV) and x-ray regimes.
Philippe Jonnard, Jean-Michel André, Karine Le Guen, Meiyi Wu, Emiliano Principi, Alberto Simoncig, Alessandro Gessini, Riccardo Mincigrucci, Claudio Masciovecchio, Olivier Peyrusse   +9 more
doaj   +2 more sources

State Filling and Stimulated Emission by Colloidal InP/ZnSe Core/Shell Quantum Dots [PDF]

, 2022
Colloidal InP-based quantum dots (QDs) have been widely studied for luminescent color conversion or electroluminescence, yet the nature of the emitting state remains a matter of debate and reports on stimulated emission by these materials are nearly ...
Hannes, Van Avermaet, Pieter, Schiettecatte, Filipe, Sousa Velosa, Leila, Mingabudinova, Pieter, Geiregat, Zeger, Hens   +5 more
core   +1 more source

Asymmetric AZA-BODIPY with Optical Gain in the Near-Infrared Region

Molecules, 2022
In recent years, there has been a lot of interest in the development of organic compounds emitting in the near-infrared (NIR) region due to their stimulating applications, such as biosensing and light detection and ranging (LiDAR).
Tersilla Virgili, Lucia Ganzer, Chiara Botta, Benedetta Maria Squeo, Mariacecilia Pasini   +4 more
doaj   +1 more source

Parahydrogen and Radiofrequency Amplification by Stimulated Emission of Radiation Induce Through-Space Multinuclear NMR Signal Enhancement [PDF]

, 2022
Hyperpolarized (i.e., polarized far beyond the thermal equilibrium) nuclear spins can result in radiofrequency amplification by stimulated emission of radiation (RASER) effect.
Oleg G., Salnikov, Ivan A., Trofimov, Andrey N., Pravdivtsev, Jan-Bernd, Hövener, Igor V., Koptyug, Eduard Y., Chekmenev, Kolja, Them   +6 more
core   +1 more source

Nanoscatterer-Assisted Fluorescence Amplification Technique

Nanomaterials, 2023
Weak fluorescence signals, which are important in research and applications, are often masked by the background. Different amplification techniques are actively investigated.
Sylvain Bonnefond, Antoine Reynaud, Julie Cazareth, Sophie Abélanet, Massimo Vassalli, Frédéric Brau, Gian Luca Lippi   +6 more
doaj   +1 more source