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Self-mixing-based photoacoustic sensor
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DOI：10.1016/j.snr.2026.100487.png)
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Abstract
En 中文
• Novel approach for trace-gas sensing that combines photoacoustic spectroscopy with self-mixing interferometry. • The system achieved the same detection sensitivity of bulkier state-of-the-art Michelson interferometric readout. • The self-mixing readout opens perspectives for easier scalability towards on-chip integrated sensors.
Keywords:
Photoacoustic sensing
Trace gas sensing
Quantum cascade laser
Infrared
Feedback interferometry
Optomechanics
Self mixing
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