A visible wavelength spectrometer for the study of plasma discharges had been configured to image multiple spectra onto a two-dimensional detector, with unprecedented wavelength accuracy. The f/1.8 200-mm lenses allow for both high-throughput and stigmatic imaging. The angular position of the grating is measured independently of the grating drive with high-precision encoder technology. Wavelength accuracy below 0.001 nanometers is possible at visible wavelengths (300-800 nm). With a precise measure of the grating angle, the initial precision wavelength calibration can be retained eliminating the need for frequent recalibrations.
No.:
M-796
