The spectra are read out by CCD arrays, resulting in exceptionally high measurement speeds. Since these devices incorporate no moving parts, you can expect the usual high accuracy and stability of our devices, as well as the capability to measure pulsed lasers in addition to CW.
1. Light source
2. Echelle grating
3. Cross disperser
4. Dispersion by echelle grating
5. Dispersion by cross disperser
The LSA utilizes an echelle grating and a low order grating in two separate beam paths. The echelle grating provides the LSA with high resolving power, enabling high accuracy measurements.
The first order grating makes it possible to overcome the wavelength indeterminancy of the echelle grating. The auto-calibration function of the LSA ensures that you never have to worry about routine maintenance.
Using gratings in a cross-dispersion configuration means that you do not have to sacrifice the measurement range for accuracy. The HDSA delivers high accuracy and resolution for its whole range at once.