Echelle spectrometer assembly and method for wavelength calibration of the meter

摘要

Spectrometer assembly (10) includes a light source with a continuous spectrum (11), a pre-monochromator for generating a spectrum with a small linear dispersion relatively spectral portion can be selected, the spectrum of the spectral portions such The central wavelength of the spectral interval of equal or smaller than the bandwidth of the spectral range order such in the echelle spectrum, is selected, the maximum blaze efficiency, bandwidth, echelle spectrometer having means for wavelength calibration ( spatial resolution optical detector at the outlet side of the spectrum for the detection of wavelength spectra intermediate slit assembly with an inlet slit pre-monochromator (2) (21), an intermediate slit (3) and (50) 4), (5) at it can be measured. This assembly, to a reference position the light of a light source with a continuous spectrum on the detector, and wider than the monochromatic image of the entrance slit width intermediate slit (3) is generated by the pre-monochromator at the location of the intermediate slit means for calibrating the pre-monochromator is to be calibrated is provided.