Full-field optical spectroscopy at a high spectral resolution using atomic vapors

Spectral imaging techniques extract spectral information using dispersive elements in combination with optical microscopes. For rapid acquisition, multiplexing spectral information along one dimension of imaged pixels has been demonstrated in hyperspectral imaging, as well as in Raman and Brillouin imaging. Full-field spectroscopy, i.e., multiplexing where imaged pixels are collected in 2D simultaneously while spectral analysis is performed sequentially, can increase spectral imaging speed, but so far has been attained at low spectral resolutions. Here, we extend 2D multiplexing to high spectral resolutions of similar to 80 MHz (similar to 0.0001 nm) using high-throughput spectral discrimination based on atomic transitions.(c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Automated summary

Spectral imaging techniques utilize dispersive elements and optical microscopes to extract spectral information. High-speed acquisition of spectral information has been achieved through multiplexing in hyperspectral imaging, Raman imaging, and Brillouin imaging. This paper extends 2D multiplexing to high spectral resolutions of approximately 80 MHz (approximately 0.0001 nm) using high-throughput spectral discrimination based on atomic transitions.