Versatile Lithium Niobate Platform for Photoacoustic/Thermoelastic Gas Sensing and Photodetection

TL;DR

This paper introduces a lithium niobate platform integrating photoacoustic, thermoelastic, and photodetection functionalities on a single chip, enabling sensitive, compact, and scalable gas sensing and photodetection for diverse applications.

Contribution

It presents a novel multi-functional lithium niobate platform combining multiple sensing and detection modalities on one chip, enhancing portability and integration.

Findings

High sensitivity across visible to infrared wavelengths.

Successful demonstration of gas sensing and photodetection.

Compact and scalable system design.

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.