Single-pixel hyperspectral photoluminescence tomography of optical materials

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F25%3A00648115" target="_blank" >RIV/61389021:_____/25:00648115 - isvavai.cz</a>
Result on the web
<a href="https://opg.optica.org/ao/abstract.cfm?uri=ao-64-35-10497" target="_blank" >https://opg.optica.org/ao/abstract.cfm?uri=ao-64-35-10497</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/AO.578657" target="_blank" >10.1364/AO.578657</a>

Result language
angličtina
Original language name
Single-pixel hyperspectral photoluminescence tomography of optical materials
Original language description
Three-dimensional photoluminescence (PL) imaging at micrometer scales is essential for characterizing defects in optical materials. However, conventional scanning systems suffer from prohibitively long acquisition times when measuring weak PL signals from defects. We present a novel 3D compressive imaging technique, to our knowledge, that extends single-pixel camera principles to volumetric PL tomography, achieving three-dimensional reconstruction with micrometer-scale depth resolution. This is enabled by a set of unique 3D speckle patterns generated near the focal plane of a lens, exploiting their rapid decorrelation in the near-field diffraction regime. Theoretical analysis confirms that the depth resolution follows conventional depth of field scaling laws while enabling simultaneous acquisition of entire 3D datasets. We demonstrate the method’s capability using Ce-doped luminophore plates, successfully distinguishing multiple PL sources within the same volume and accurately tracking their positions along the laser beam. The approach offers significant potential for studying bulk and surface defects in optical materials.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
<a href="/en/project/GA22-09296S" target="_blank" >GA22-09296S: Tomography of defects in optical materials via 3D structured light</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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