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Complete spatial coherence characterization of quasi-random laser emission from dye doped transparent wood
Univ Eastern Finland, Inst Photon, POB 111, FI-80101 Joensuu, Finland..
KTH, School of Engineering Sciences (SCI), Applied Physics, Photonics.ORCID iD: 0000-0002-6548-5067
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0002-1591-5815
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0001-5818-2378
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2018 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 26, no 10, p. 13474-13482Article in journal (Refereed) Published
Abstract [en]

We report on the experimental determination of the complete two coordinate spatial coherence function of light emitted by a quasi-random laser, implemented on recently introduced dye-doped transparent wood. The spatial coherence was measured by means of a double grating interferometer, which has some advantages over the standard Young's interferometer. Analysis of the spatial coherence reveals that emission from such a material can be considered as a superposition of several spatial modes produced by individual emitters within semi-ordered scattering medium. The overall degree of coherence, (gamma)over-bar, for this quasi-random laser was found to be 0.16 +/- 0.01, having possible applications in speckle free laser imaging and illumination.

Place, publisher, year, edition, pages
OPTICAL SOC AMER , 2018. Vol. 26, no 10, p. 13474-13482
National Category
Atom and Molecular Physics and Optics
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URN: urn:nbn:se:kth:diva-231223DOI: 10.1364/OE.26.013474ISI: 000432457600117PubMedID: 29801372Scopus ID: 2-s2.0-85047074022OAI: oai:DiVA.org:kth-231223DiVA, id: diva2:1228530
Note

QC 20180628

Available from: 2018-06-28 Created: 2018-06-28 Last updated: 2018-06-28Bibliographically approved

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Vasileva, ElenaLi, YuanyuanBerglund, LarsPopov, Sergei

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