Results 31 to 40 of about 313,183 (286)

Stimulated emission from nitrogen-vacancy centres in diamond

open access: yesNature 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   +14 more
doaj   +1 more source

Stimulated Emission Cross Section in Xenon-Neon Lasers

open access: yesمجلة بغداد للعلوم, 2017
Gas Lasers are important tools that are used in variety purposes, for their low and (cw) output power. The aim of this study was to prepare a way to calculate an optimum stimulated emission cross-section in a gas laser containing a mixture of Xenon and ...
Baghdad Science Journal
doaj   +1 more source

Stimulated Emission from a single excited atom in a waveguide

open access: yes, 2012
We study stimulated emission from an excited two-level atom coupled to a waveguide containing an incident single-photon pulse. We show that the strong photon correlation, as induced by the atom, plays a very important role in stimulated emission ...
A. Einstein   +4 more
core   +1 more source

Nonclassicality of induced coherence without induced emission

open access: yes, 2019
Interference of two beams produced at separate biphoton sources was first observed more than two decades ago. The phenomenon, often called "induced coherence without induced emission", has recently gained attention after its applications to imaging ...
Hochrainer, A.   +4 more
core   +1 more source

Discovery of Pulsed OH Maser Emission Stimulated by a Pulsar [PDF]

open access: yes, 2005
Stimulated emission of radiation has not been directly observed in astrophysical situations up to this time. Here we demonstrate that photons from pulsar B1641-45 stimulate pulses of excess 1720 MHz line emission in an interstellar OH cloud.
Johnston, Simon   +3 more
core   +4 more sources

Stimulated parametric emission microscopy

open access: yesOptics Express, 2006
We propose a novel microscopy technique based on the four-wave mixing (FWM) process that is enhanced by two-photon electronic resonance induced by a pump pulse along with stimulated emission induced by a dump pulse. A Ti:sapphire laser and an optical parametric oscillator are used as light sources for the pump and dump pulses, respectively.
Keisuke, Isobe   +8 more
openaire   +2 more sources

Optimal Quantum Cloning via Stimulated Emission [PDF]

open access: yes, 1999
We show that optimal universal quantum cloning can be realized via stimulated emission. Universality of the cloning procedure is achieved by choosing systems that have appropriate symmetries.
A. Migdall   +19 more
core   +2 more sources

Why and When Are Evidence‐Based Interventions Adopted in Paediatric Supportive Care? A Qualitative Exploration of the Determinants of Photobiomodulation Implementation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Oral mucositis is a common and debilitating side effect of childhood cancer and stem cell transplant treatments. It affects the quality of life of children and young people (CYP) and places a strain on services. Photobiomodulation is recommended for oral mucositis prevention in international guidance but is poorly implemented in UK ...
Claudia Heggie   +4 more
wiley   +1 more source

EUV stimulated emission from MgO pumped by FEL pulses

open access: yesStructural 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   +9 more
doaj   +1 more source

Purcell Effect in the Stimulated and Spontaneous Emission Rates of Nanoscale Semiconductor Lasers [PDF]

open access: yes, 2018
Nanoscale semiconductor lasers have been developed recently using either metal, metallo-dielectric or photonic crystal nanocavities. While the technology of nanolasers is steadily being deployed, their expected performance for on-chip optical ...
Fiore, Andrea, Romeira, Bruno
core   +3 more sources

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