Versatile Lithium Niobate Platform for Photoacoustic/Thermoelastic Gas Sensing and Photodetection
Abstract
We present a lithium niobate multi-functional platform (LN-MFP) that integrates photoacoustic and thermoelastic spectroscopy with photodetection on a single chip. Utilizing LN's piezoelectric and thermoelastic properties and an optimized design, it achieves high sensitivity across visible to long-wave infrared wavelengths. We demonstrate photoacoustic/thermoelastic gas sensing and photodetection using LN-MFP. The compact, integrated system with custom packaging and direct wire bonding reduces complexity and size, enabling portable, scalable sensing for environmental and diagnostic applications.
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