Experimental generation of cosine-Gaussian-correlated Schell-model beams with rectangular symmetry

Chunhao Liang, Fei Wang, Xianlong Liu, Yangjian Cai, Olga Korotkova

Research output: Contribution to journalArticlepeer-review

114 Scopus citations


Cosine-Gaussian-correlated Schell-model sources whose degree of coherence (DOC) is of circular symmetry have been introduced just recently [Opt. Lett. 38, 2578 (2013)]. In this Letter, we propose a model for a source whose DOC is the superposition of two 1D cosine-Gaussian-correlated Schell-model sources, i.e., possesses rectangular symmetry. The novel model sources and beams they generate are termed rectangular cosine-Gaussian Schell-model (RCGSM). The RCGSM beam exhibits unique features on propagation, e.g., its intensity in the far field (or in the focal plane) displays a four-beamlet array profile, being qualitatively different from the ring-shaped profile of the CGSM beam whose DOC is of circular symmetry. Furthermore, we have carried out experimental generation of the proposed beam and measured its focusing properties. Our experimental results are consistent with the theoretical predictions.

Original languageEnglish (US)
Pages (from-to)769-772
Number of pages4
JournalOptics Letters
Issue number4
StatePublished - Feb 15 2014

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Experimental generation of cosine-Gaussian-correlated Schell-model beams with rectangular symmetry'. Together they form a unique fingerprint.

Cite this