Howtosignalprocessing
- How do you measure the resolution of a spectrometer?
- What is an acceptable resolution for spectrometer?
- How do you increase the resolution of a spectrometer?
- How do you find the spectral range of a spectrometer?
How do you measure the resolution of a spectrometer?
What is the correct way to measure resolution? Resolution values for a spectrometer are determined by measuring the Full Width Half Maximum (FWHM) of a peak. This is done by measuring the width of the peak at the half of the maximal peak intensity.
What is an acceptable resolution for spectrometer?
Most spectrometers have the resolution specified when the spectrometer is in a scanning-monochromator and single-element-detector configuration. A typical 0.32-m focal length monochromator might have a specified resolution of 0.06 nm with a 1200-g/mm grating and 0.010-mm slits.
How do you increase the resolution of a spectrometer?
By increasing the density of the grating in the spectrometer, the spectral resolution will be improved. In practice, and as a simplified rule of thumb, double the grating grooves and the dispersion will be doubled. Eg. 2 cm-1/pixel becomes 1 cm-1/pixel.
How do you find the spectral range of a spectrometer?
Setting λ2 as the minimum wavelength present in each order (e.g. 3000 Å in figure 98), then the free spectral range, FSR, is given by: FSR = λ1 - λ2 = λ2 / n. Hence, for order n = 1 in figure 98, FSR = 3000 / 1 = 3000 Å, and for order n = 2, FSR = 3000 / 2 = 1500 Å.
