Results 241 to 250 of about 315,978 (276)

Molecular excitation processes by fluctuating light

Chemical Physics Letters, 1979
Abstract The “reduced” model theory is extended in such a way as to allow a quantitative study of excitation processes by pulses having a width greater than their uncertainty-limited value.
Maurizio Benfatto, Paolo Grigolini
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Coherence and Fluctuations in Light Beams

American Journal of Physics, 1964
A quasithermal, quasmonochromatic lamp is described which serves as a highly degenerate light source with adjustable coherence time between 10−5 sec and 1 sec. This lamp is used for several demonstration experiments concerning the relations between coherence and fluctuations: The intensity interferometer of Hanbury Brown and Twiss is applied to measure
W. Martienssen, E. Spiller
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V Fluctuations of Light Beams

1963
Publisher Summary This chapter describes the fluctuations of light beams. Like other fluctuation problems concerned with departures from equilibrium, radiation fluctuations in an enclosure can be treated by the methods of statistical mechanics. The fluctuations of the counts recorded by a photo-detector illuminated by Gaussian light depart from ...
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Frequency dependence of laser light fluctuations

Physical Review A, 1983
The equations of motion for an inhomogeneously broadened laser operating off resonance in the neighborhood of threshold are solved. It is shown that the effects of detuning cannot be described just by a frequency-dependent laser pump parameter, but that the laser characteristics are modified in other ways also.
Surendra Singh, S. Friberg, L. Mandel
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Optical fluctuations of light-emitting diodes

IEEE Journal of Quantum Electronics, 1972
Intensity fluctuations of GaAs light-emitting diodes (LED) have been measured at 25°C ambient temperature in the frequency range of 25 Hz to 20 kHz. A dependence of optical fluctuations at low frequencies on diode current and also on the direction of emitted radiation has been found.
J. Conti, M. Strutt
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Squeezed Light and Its Photocurrent Fluctuations

1996
In this paper. we propose a general theory that enables us to calculate the photocurrent noise spectrum of various squeezed light. Considering the coupling between the light and the detector, the photocurrents can be described by a set of stochastic differential equations.
Hsin-Fei Meng, Chih-Ming Lai
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Fluctuations of second harmonic generated light

Zeitschrift für Physik A Hadrons and nuclei, 1971
We calculate the statistical properties of light, arising by second harmonic generation from stationary quasimonochromatic light fields as thermal and single-mode laser light. After a derivation of the correlationfunctions we draw conclusions about spectral densities and the expected results for photon-counting experiments for the converted light.
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Intensity Fluctuations of Partially Polarized Light

Proceedings of the Physical Society, 1963
The ensemble distribution is derived for the number of photons n counted in a short time interval by a photodetector which is illuminated by a partially polarized beam of thermal light. It is shown to be of the form expected for n bosons distributed between 2/(1 + P) cells of phase space, where P is the degree of polarization.
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Light Scattering, Heat Conduction, and Fluctuation

2015
In this chapter, we discuss briefly some other interesting applications of the ET14 theory: light scattering, stationary heat conduction, and fluctuating hydrodynamics. However, since these studies have just begun recently and is still quite primitive, this chapter should be read as an outline of these promising research fields.
Tommaso Ruggeri, Masaru Sugiyama
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Squeezing the quantum fluctuations of light

Contemporary Physics, 1988
Abstract This paper is intended to be an introduction to the field of non-classical light. Starting from a pictorial discussion of the properties of the radiation field, examples for the generation and possible applications of squeezed states of the light field are given.
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