Results 71 to 80 of about 398,926 (227)

Probing Within Partially Coherent Microcavity Frequency Combs via Optical Pulse Shaping

, 2012
Recent investigations of microcavity frequency combs based on cascaded four-wave mixing have revealed a link between the evolution of the optical spectrum and the observed temporal coherence.
Agha, Andrew M. Weiner, Daniel E. Leaird, Del’Haye, Del’Haye, Del’Haye, Fahmida Ferdous, Ferdous, Foster, Grudinin, Herr, Houxun Miao, Johnson, Kartik Srinivasan, Lei Chen, Levy, Liang, Okawachi, Papp, Pei-Hsun Wang, Razzari, Vladimir Aksyuk, Weiner   +22 more
core   +1 more source

A wave optics model for the effect of partial coherence on coherent diffractive imaging [PDF]

, 2021
Zhongzhu Zhu, Han Xu, Lingfei Hu, Ming Li, Peng Liu, Yuhui Dong, Liang Zhou   +6 more
openalex   +1 more source

Self-steering partially coherent beams

Scientific Reports, 2017
AbstractWe introduce a class of shape-invariant partially coherent beams with a moving guiding center which we term self-steering partially coherent beams. The guiding center of each such beam evolves along a straight line trajectory which can be engineered to make any angle with the x-axis.
Yahong Chen, Sergey A. Ponomarenko, Yangjian Cai   +2 more
openaire   +2 more sources

Morphology of the scattering target: Fresnel and turbulent mechanisms [PDF]

, 1983
Further studies of VHF radar signals from the troposphere and stratosphere revealed not only scattering from isotropic turbulence at scales of half the radar wavelength but also partial or Fresnel reflection or scattering from horizontally stratified ...
Rottger, J.
core   +1 more source

Partial and macroscopic phase coherences in underdoped Bi${}_{2}$Sr${}_{2}$CaCu${}_{2}$O${}_{8+{\delta}}$ thin film

, 2001
A combined study with use of time-domain pump-probe spectroscopy and time-domain terahertz transmission spectroscopy have been carried out on an underdoped Bi$_2$Sr$_2$CaCu$_2$O$_{8+{\delta}}$ thin film.
Iguchi, I., Kida, N., Kiwa, T., Murakami, H., Tonouchi, M., Uchiyama, T., Wang, Z.   +6 more
core   +1 more source

Generation of spatiotemporal optical vortices with partial temporal coherence [PDF]

, 2021
Amal Mirando, Yimin Zang, Qiwen Zhan, Andy Chong   +3 more
openalex   +1 more source

Multimodal imaging in posterior microphthalmos

Journal of Current Ophthalmology, 2019
Purpose: To evaluate the multimodal imaging including optical coherence tomography angiography (OCTA) findings in patients with posterior microphthalmos (PM).
Reza Karkhaneh, Ahmad Masoumi, Nazanin Ebrahimiadib, Hormoz Chams, Mojtaba Abrishami   +4 more
doaj   +1 more source

Sub-nanometer free electrons with topological charge

, 2011
The holographic mask technique is used to create freely moving electrons with quantized angular momentum. With electron optical elements they can be focused to vortices with diameters below the nanometer range.
Hell, J., Löffler, S., Schattschneider, P., Steiger-Thirsfeld, A., Stöger-Pollach, M., Verbeeck, J.   +5 more
core   +2 more sources

Coherence-based Partial Exact Recovery Condition for OMP/OLS [PDF]

, 2012
We address the exact recovery of the support of a k-sparse vector with Orthogonal Matching Pursuit (OMP) and Orthogonal Least Squares (OLS) in a noiseless setting.
Gribonval, Remi, Herzet, Cedric, Idier, Jerome, Soussen, Charles   +3 more
core   +3 more sources

Partial coherence and coherence length in StimPDC [PDF]

, 2023
G. H. dos Santos, Raphael César de Souza Pimenta, Rafael de Morais Gomes, S. P. Walborn, P. H. Souto Ribeiro   +4 more
openalex   +1 more source