Results 211 to 220 of about 34,564 (258)
Some of the next articles are maybe not open access.
Focusing of partially coherent light
Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2007We investigate the focusing of partially coherent light and show that for certain types of correlation functions the intensity distribution can exhibit a local minimum at the geometrical focus.
T. van Dijk, T.D. Visser
openaire +1 more source
Twisting partially coherent light
Optics Letters, 2018Twisted Gaussian Schell-model beams were introduced 25 years ago as a celebrated example of a "genuinely two-dimensional" partially coherent wavefield. Today, a definite answer about the effect that a twist phase should produce on an arbitrary cross-spectral density has not yet been reached. In the present Letter, the necessary and sufficient condition
openaire +2 more sources
Holography in partially coherent light
Optics Communications, 1980Abstract A Michelson interferometer has been used to obtain good holographic carrierfringes of the order of 200 to 300 fringes/ mm over an area of 1 cm × 1.5 cm with a Hg-are source and extended aperture with and without filter. The fringes have been used to record holograms.
S.C. Som, Claude Delisle, Mario Drouin
openaire +1 more source
1978
When discussing the theory of interference and diffraction of waves, one usually assumes that the fields remain perfectly sinusoidal for all values of time. This is obviously an idealized situation and we know that the radiation from an ordinary light source consists of finite* size wave trains, a typical time variation of which is shown in Fig.
Ajoy K. Ghatak, K. Thyagarajan
openaire +1 more source
When discussing the theory of interference and diffraction of waves, one usually assumes that the fields remain perfectly sinusoidal for all values of time. This is obviously an idealized situation and we know that the radiation from an ordinary light source consists of finite* size wave trains, a typical time variation of which is shown in Fig.
Ajoy K. Ghatak, K. Thyagarajan
openaire +1 more source
Properties of Partially Coherent Light*
Journal of the Optical Society of America, 1966The traditional classical theory of coherence is discussed with particular emphasis on the distinction between narrowband coherent and incoherent sources. The significance of this difference is discussed in terms of conventional classical optics experiments.
J. G. Meadors, W. S. C. Chang
openaire +1 more source
Focusing with Partially Coherent Light
Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF), 2018In following paper it is analyzed the synthesis of focusing regions using as illumination system partially coherent light sources. The description is performed by means of the temporal average for the optical field.
A. Garcia-Guzman +4 more
openaire +1 more source
Multifilter phase imaging with partially coherent light
Applied Optics, 2014A novel quantitative phase imaging method is shown to estimate phase accurately over a wide range of length scales using Köhler illumination from an extended incoherent source. The method is based on estimating the longitudinal intensity derivative in the transport-of-intensity equation via convolution with multiple Savitzky-Golay differentiation ...
Micah H, Jenkins +2 more
openaire +2 more sources
Elementary functions: propagation of partially coherent light
Journal of the Optical Society of America A, 2009The theory of propagation of partially coherent light is well known, but performing numerical calculations still presents a difficulty because of the dimensionality of the problem. We propose using a recently introduced method based on the use of elementary functions [Wald et al. Proc. SPIE6040, 59621G (2005)] to reduce the integrals to two dimensions.
Anna, Burvall +2 more
openaire +2 more sources
Holographic aberration compensation with partially coherent light
Optics Letters, 1982The aberration-compensation method of passing the conjugate beam from a hologram through the same optical system used in making the hologram is combined with broad source interferometer techniques to give, along with the aberration compensation, considerable noise reduction. As with conventional photography, the image is two dimensional.
E N, Leith, G J, Swanson
openaire +2 more sources
Intrinsic degrees of coherence of partially polarized light
SPIE Proceedings, 2006We address the problem of defining degrees of coherence for partially polarized light. We discuss a new theoretical approach that introduces intrinsic degrees of coherence. These parameters make it possible to separate partial polarization and partial coherence and are measurable quantities.
Réfrégier, Philippe +1 more
openaire +2 more sources