Three dimensional spectrometer

TL;DR

This paper introduces a novel 3D spectrometer design that employs compressed sensing to capture and reconstruct 3D spectral data from a single 2D measurement, enabling efficient and robust spectral profiling.

Contribution

The paper presents a new 3D spectrometer design that uses a wide slit and compressed sensing to retrieve 3D spectral data from a single measurement, differing from traditional narrow-slit spectrometers.

Findings

Numerical simulations show accurate retrieval of spectral profiles.

The reconstructed 3D spectral data matches original profiles well.

The retrieved signals are robust for further analysis.

Abstract

We present a novel design of 3D spectrometer that can retrieve 3D spectral profile in a single measurement. The 3D spectrometer design is built upon the concept of compressed sensing to make it possible to retrieve 3D information from 2D data from a screen/camera. In contrast to common spectrometers, the 3D spectrometer uses a wide slit instead of a narrow slit and retrieve the 3D datacube that consists of 2D spatial and 1D spectral information. Numerical tests were performed to simulate the retrieval of spectral profiles. The results show that the retrieved profiles match well the original profiles. It is also shown that the retrieved signal from the 3D spectrometer is robust enough for a further post-processing analysis.