Results 281 to 290 of about 386,620 (328)
Some of the next articles are maybe not open access.

Focusing with Partially Coherent Light

Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF), 2018
In 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

Holographic aberration compensation with partially coherent light

Optics Letters, 1982
The 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

Partially Coherent Light

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

Multifilter phase imaging with partially coherent light

Applied Optics, 2014
A 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, 2009
The 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

Two-Point Resolution with Partially Coherent Light*

Journal of the Optical Society of America, 1967
The two-point resolution problem has been discussed previously using the Sparrow criterion. However, this masks the real changes of the image structure as the degree of coherence between the two points changes. The only measurable quantity is, of course, the separation between the two object points.
D N, Grimes, B J, Thompson
openaire   +2 more sources

CGH based on partially coherent light

AOPC 2019: Display Technology and Optical Storage, 2019
A new expression of partially coherent light is derived. The formula of the partially coherent optical field is consisted of two terms: spatially coherent part propagated by angular spectrum and incoherent part based on the optical transfer function. Both parts are related to coherent function (degree of coherence).
Junyi Duan   +5 more
openaire   +1 more source

Focusing of Partially Coherent Light

1996
The focusing of fully coherent waves has been studied extensively over a period of many years.1 However, much less work has been done on the focusing of partially coherent fields. In fact, no satisfactory theory covering this subject exists. In the present paper we introduce a simple model for the analysis of problems of this kind.
Weijian Wang, Ari T. Friberg, Emil Wolf
openaire   +1 more source

Fourier Transformation in Partially Coherent Light

Optica Acta: International Journal of Optics, 1975
Fourier transformation in partially coherent light has been theoretically studied. It is shown that the intensity distribution at the back focal plane of a lens when a transparency located at the front focal plane and illuminated by a partially space coherent light is given by the convolution of the Fourier transform of mutual intensity function and ...
R.S. Sirohi, V. Ram Mohan
openaire   +1 more source

Virtual sources for structured partially coherent light fields

Journal of the Optical Society of America A, 2023
A virtual source (VS) is a hypothetical source instead of an actual physical entity, but provides a distinctive perspective to understand physical fields in a source-free area. In this work, we generalize the VS theory to structured partially coherent light fields (PCLFs) by establishing the partially coherent inhomogeneous Helmholtz equation, then ...
Zehong Liang   +6 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy