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Updated: Sep 10, 2025

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
Published on: April 16, 2017
Chip-integrated spectroscopy capable of temperature retrieval
Yifan Du1,2, Yong Meng Sua1,2,3, Santosh Kumar1,2
1Department of Physics, Stevens Institute of Technology, 1 Castle Point Terrace, Hoboken, NJ, 07030, USA.
Abstract:
We demonstrate a chip-integrated emission spectrometer 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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