微环谐振器辅助水蒸气光热光谱学

Sensors (Basel, Switzerland) Pub Date : 2024-06-01 DOI:10.3390/s24113679

M. Kotlyar, Jenitta Johnson Mapranathukaran, Gabriele Biagi, Anton J. Walsh, B. Lendl, L. O’Faolain

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引用次数: 0

摘要

我们首次展示了微环谐振器辅助的气相样品光热光谱测量。实验使用了电信波长探针激光器，该激光器通过光纤阵列与氮化硅光子集成电路耦合。我们使用 1395 nm 的二极管激光激发了微环上方水蒸气中的光热效应。我们测量了 1f 和 2f 波长调制响应与激发激光波长的关系，并验证了信号的功率缩放行为。

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Micro-Ring Resonator Assisted Photothermal Spectroscopy of Water Vapor

We demonstrated, for the first time, micro-ring resonator assisted photothermal spectroscopy measurement of a gas phase sample. The experiment used a telecoms wavelength probe laser that was coupled to a silicon nitride photonic integrated circuit using a fibre array. We excited the photothermal effect in the water vapor above the micro-ring using a 1395 nm diode laser. We measured the 1f and 2f wavelength modulation response versus excitation laser wavelength and verified the power scaling behaviour of the signal.

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Sensors (Basel, Switzerland)

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