Bagusat, V.V.BagusatKraus, M.M.KrausFörster, E.E.FörsterThomae, D.D.ThomaeHönle, T.T.HönleBrüning, R.R.BrüningHillmer, H.H.HillmerBrunner, R.R.Brunner2022-03-062022-03-062019https://publica.fraunhofer.de/handle/publica/26072510.1364/JOSAA.36.000345The concept of a new compact echelle-inspired cross-grating spectrometer is introduced, and a specific optical design is presented. The new concept aims to achieve simultaneously a high spectral resolution, a wide accessible spectral range, and compact dimensions. The essential system novelty concerns the combination of different aspects: the implementation of a crossed grating comprising both the main dispersion and order separation, a folded reflective beam path, which enables a reduction of the system volume, and the introduction of a form-adjustable mirror for aberration compensation. The exemplary optical design offers a spectral bandwidth ranging from 330-1100 nm with spectral resolution better than 1.4 nm in the fourth and 0.4 nm in the 11th order. The optical setup covers a volume of 110 mm × 110 mm × 30 mm.en620535journal article