Control of the size of the coherence area in entangled twin beams

2016 ◽  
Vol 93 (6) ◽  
Author(s):  
M. W. Holtfrerich ◽  
A. M. Marino
Keyword(s):  
Coherence Area

Quantum Light Generation and Superradiance Effects in the Active Microcavity

1998 ◽  
Vol 07 (01) ◽  
pp. 121-130 ◽  
Author(s):  
F. de Martini ◽  
O. Jedrkiewicz ◽  
P. Mataloni
Keyword(s):  
Active Medium ◽  
Single Photon ◽  
Fabry Perot ◽  
Relativistic Causality ◽  
Light Generation ◽  
Photon States ◽  
Collective Emission ◽  
Coherence Area ◽  
Transverse Interaction ◽  
Classical Radiation

The process of generation of non-classical radiation in an active Fabry-Perot dye microcavity, under femtosecond excitation, has been investigated. Single photon states, with a non-classical sub-Poissonian distribution have been generated after the excitation of a small number of active molecules, located between the two mirrors. By multiple excitation of the active medium, collective emission phenomena are expected because of the strong superradiant coupling occurring within the transverse coherence area of the microcavity. In particular, we have experimentally verified the principle of relativistic causality within the process of two-dipole superradiance by transverse interaction, in condition of strong microcavity confinement.

scholarly journals Coherence area profiling in multi-spatial-mode squeezed states

2015 ◽  
Vol 63 (10) ◽  
pp. 989-994 ◽  
Author(s):  
B.J. Lawrie ◽  
N. Otterstrom ◽  
R.C. Pooser
Keyword(s):  
Squeezed States ◽  
Spatial Mode ◽  
Coherence Area

scholarly journals Large Coherence Area Thin-Film Photonic Stop-Band Lasers

2001 ◽  
Vol 86 (9) ◽  
pp. 1753-1756 ◽  
Author(s):  
Victor I. Kopp ◽  
Azriel Z. Genack ◽  
Zhao-Qing Zhang
Keyword(s):  
Thin Film ◽  
Stop Band ◽  
Photonic Stop Band ◽  
Coherence Area

scholarly journals Wavefront coherence area for predicting visual acuity of post-PRK and post-PARK refractive surgery patients

1999 ◽  
Author(s):  
Daniel D. Garcia ◽  
Corina van de Pol ◽  
Brian A. Barsky ◽  
Stanley A. Klein
Keyword(s):  
Visual Acuity ◽  
Refractive Surgery ◽  
Coherence Area

scholarly journals The effect of spatial coherence of sources on synthetic aperture mapping

1991 ◽  
Vol 131 ◽  
pp. 10-14
Author(s):  
Daniel F.V. James
Keyword(s):  
Fourier Transform ◽  
Inverse Fourier Transform ◽  
Spatial Coherence ◽  
Full Description ◽  
Coherent Light ◽  
Partially Coherent ◽  
Interference Fringes ◽  
Partially Coherent Light ◽  
The Fourier Transform ◽  
Coherence Area

The interferometric mapping of astronomical objects relies on the van-Cittert Zernike theorem, one of the major results of the theory of partially coherent light [see, Bom and Wolf (1980), chapter 10]. This theorem states that the degree of spatial coherence of the field from a distant spatially incoherent source is proportional to the Fourier transform of the intensity distribution across the source. Measurement of the degree of spatial coherence, by, for example, measuring the visibility of interference fringes, allows the object to be mapped by making an inverse Fourier transform. (For a full description of this technique see Thompson, Moran and Swenson, 1986.)In this paper I present a summary of the results an investigation into what happens when the distant source is not spatially coherent (James, 1990). Using a heuristic model of a spherically symmetric partially coherent source, an analytic expression for the error in the measurement of the effective radius, expressed as a function of coherence area, can be obtained.

scholarly journals Spatially Resolved Characterization of the Coherence Area in the Incoherent Emission Regime of a Broad-Area Vertical-Cavity Surface-Emitting Laser

2009 ◽  
Vol 45 (3) ◽  
pp. 249-255 ◽  
Author(s):  
Guy Verschaffelt ◽  
Gordon Craggs ◽  
Michael L. F. Peeters ◽  
Shyam K. Mandre ◽  
Hugo Thienpont ◽  
...  
Keyword(s):  
Cavity Surface ◽  
Broad Area ◽  
Spatially Resolved ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Vertical Cavity ◽  
Coherence Area

Comptage des Photoélectrons Provenant de Points Statistiquement Indépendants et d'une Surface Etendue de la Photocathode

1971 ◽  
Vol 49 (10) ◽  
pp. 1255-1262 ◽  
Author(s):  
Jacques Bures ◽  
Claude Delisle
Keyword(s):  
Relative Size ◽  
Coherence Time ◽  
The Other ◽  
Detection Time ◽  
Circular Area ◽  
Physical Point ◽  
Other Hand ◽  
The One ◽  
Coherence Area

The experimental photocount distribution from a photocathode illuminated by a pseudothermal source is compared with theory. The detection time is much smaller than the coherence time [Formula: see text]. The agreement is excellent for an illuminated area composed of holes small enough to be considered as points and far enough to guarantee incoherence among them. But, for an extended circular area, the agreement is good only in the limits when that area is very small or very large with respect to the coherence area. Finally, we consider on the one hand, the evaluation of an extended detection area as a function of the number of statistically independent points, L, and on the other hand, the relative size of a physical point.

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