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arXiv · 2410.23966

Chip-integrated Spectroscopy Capable of Temperature Retrieval

Yifan Du·Yong Meng Sua·Santosh Kumar·Jiuyi Zhang·Xiangzhi Li·Yongxiang Hu·Parminder Ghuman·Yuping Huang
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Abstract

We demonstrate a chip-integrated emission spectroscope capable of retrieving the temperature of the light sources. It consists of a single photon detector with low dark counts and a sweeping on-chip filter with 2 pm spectral resolution in the visible and near-infrared regimes. With wildfire sensing applications in mind, we test our system with a hollow cathode lamp to simulate the K-line emission, and show how the models of Doppler and collision broadening in the plasma can be used for temperature retrieval. With favorable device parameters, high spectral resolution, and a novel temperature retrieval capability, our technique may find broad applications in environmental monitoring, astrophysics, plasma physics, and so on.

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Yifan Du, Yong Meng Sua, Santosh Kumar, Jiuyi Zhang, Xiangzhi Li, Yongxiang Hu, Parminder Ghuman, Yuping Huang. 2024-11-01. Chip-integrated Spectroscopy Capable of Temperature Retrieval. https://arxiv.org/abs/2410.23966

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