This paper presents best practices for modeling the resolution of dispersive imaging spectrometers. The differences between sampling, width, and resolution are discussed. It is proposed that the spectral imaging community adopt a standard definition for resolution as the full-width at half maximum of the total line spread function. Resolution should be computed for each of the spectral, cross-scan spatial, and along-scan spatial/temporal dimensions separately. A physical optics resolution model is presented that incorporates the effects of slit diffraction and partial coherence, the result of which is a narrower slit image width and reduced radiometric throughput.
John F. Silny,
"Resolution modeling of dispersive imaging spectrometers," Optical Engineering 56(8), 081813 (18 August 2017). https://doi.org/10.1117/1.OE.56.8.081813
. Submission: Received: 2 February 2017; Accepted: 11 July 2017
Received: 2 February 2017; Accepted: 11 July 2017; Published: 18 August 2017