Results 11 to 20 of about 314,124 (266)

Stimulated Emission Tomography: Beyond Polarization [PDF]

open access: yesOptics 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.
Ciampini, Mario Arnolfo   +6 more
core   +4 more sources

Cosmological stimulated emission

open access: yesEuropean Physical Journal C: Particles and Fields
We study stimulated emission and absorption of gravitons in a squeezed vacuum state immersed in a thermal radiation bath. Employing one-loop interaction-picture perturbation theory, we track the time evolution of the graviton number operator and its ...
Atsuhisa Ota
doaj   +3 more sources

Nanoscatterer-Assisted Fluorescence Amplification Technique

open access: yesNanomaterials, 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   +6 more
doaj   +1 more source

Interpretation and Dynamics of the Lotka–Volterra Model in the Description of a Three-Level Laser

open access: yesPhotonics, 2021
In this work, the Lotka–Volterra equations where applied to laser physics to describe population inversion and the number of emitted photons. Given that predation and stimulated emissions are analogous processes, two rate equations where obtained by ...
Vicente Aboites   +4 more
doaj   +1 more source

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

Raman stimulated neutrino pair emission

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
A new scheme using macroscopic coherence is proposed to experimentally determine the neutrino mass matrix, in particular the absolute value of neutrino masses, and the mass type, Majorana or Dirac.
Hideaki Hara, Motohiko Yoshimura
doaj   +1 more source

Active Compensation of Differential Group Delay in a Dual-Wavelength Pulsed Fiber Laser Driven by Quasi-Synchronous Pumping

open access: yesPhotonics, 2022
We report on synchronized dual-wavelength (1.07 μm and 1.24 μm) pulsed lasing driven by a quasi-synchronous primary pumping (at 0.98 μm) of an Yb-doped fiber laser, which incorporates also a P2O5-doped fiber as an intracavity Raman converter.
Boris Nyushkov   +4 more
doaj   +1 more source

Optical Maser Emission from Trivalent Praseodymium in Calcium Tungstate [PDF]

open access: yes, 1962
Coherent emission at 1.047 µ from trivalent praseodymium in calcium tungstate was observed. This emission coincides with strong infrared fluorescence at the same wavelength and was found to be stimulated mostly by absorption of blue light by the 3P0, 3P1,
Nassau, K., Porto, S. P. S., Yariv, A.
core   +1 more source

Round-Shaped Micro Bio-Lasers Utilizing Rhodamine B as a Gain Medium [PDF]

open access: yesProgress in Physics of Applied Materials
Biolasers, new ones that utilize incorporated protein fluorophores within microscale optical cavities to produce coherent light, have a wide range of applications in medicine, including identification, diagnosing, and treating many diseases, skin repair,
Shima Vahidi   +2 more
doaj   +1 more source

Two-photon absorption and stimulated emission in poly-crystalline Zinc Selenide with femtosecond laser excitation

open access: yesOpto-Electronic Advances, 2022
The optical nonlinearity in polycrystalline zinc selenide (ZnSe), excited with 775 nm, 1 kHz femtosecond laser pulses was investigated via the nonlinear transmission with material thickness and the Z scan technique.
Qianliang Li   +4 more
doaj   +1 more source

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