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This paper presents the principles and application of a super-resolution (SR)technique, based on a L1-Norm minimization procedure. In particular, thetechnique is applied to improve low-resolution resolution spectra as obtainedfrom the optogalvanic effect in Neon and Argon discharges over the 413-423 nmwavelength range. By applying the super-resolution algorithm to theexperimental data, a surprising 70-fold reduction of the linewidth is achievedallowing to resolve prior indistinguishable peaks. It is found that furtherimprovements on the resolution are limited by the signal to noise ratio of theoriginal spectra. The importance of a suitable mathematical representation ofthe experiment and the discussion on other applications of thissuper-resolution technique in spectroscopy are also presented.

Enhanced resolution in Argon and Neon spectra using a Super-Resolution algorithm