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Infrared Laser-to-Heat Conversion in Monolithic Ytterbium Zirconate Transparent Ceramic Window
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DOI：10.1111/jace.70970.png)
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Abstract
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Precise and controllable non-contact heating is crucial for advanced heating applications but remains challenging with conventional methods and materials. To overcome the trade-offs between optical transparency and thermal stability in surface-based approaches, we propose a paradigm of “optical heating from within” using bulk, monolithic media. This work materializes this concept by designing and fabricating a novel ytterbium zirconate-based transparent ceramic, densely comprising Yb3+ as an intrinsic lattice cation to serve as an intrinsic, volume-embedded near-infrared (NIR) absorber. We demonstrate that this single, seamless component acts simultaneously as a durable optical window in the visible spectrum and a highly efficient converter of 980 nm laser radiation into bulk heat. Through comprehensive characterization from theoretical DFT calculations to experimental validation, we quantify its exceptional laser-to-heat conversion efficiency, thermal stability, and cyclic durability, and establish a one-dimensional transient heat conduction model. This work not only presents a high-performance robust photothermal ceramic but also validates a design principle for multifunctional optical components, with potential applications in actively de-iced optical domes, temperature-stabilized sensor windows, and compact all-ceramic photothermal microreactors.
Keywords:
Yb2Zr2O7 transparent ceramics
contactless heating window
infrared laser-to-heat conversion
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