Design and Implementation of a Compact Echelle Spectrometer

As a special kind of spectrometers, echelle spectrometer features wide spectral range and full spectrum direct reading. However, the two-dimensional dispersion of the echelle grating usually leads to complex structure and aberration conditions, which impacts the resolution. In this work, a compact echelle spectrometer with wide detection range and high resolution was designed and implemented, considering both the optical component parameters and the instrument structure. The simulated and experimental results proved that wide spectral range (200-600nm), high resolution (better than 0.1nm) and compact structure (260*220*110mm) were achieved.