Laser diode wavelength meterin the range of 330–1080 nm

An inexpensive laser diode (LD) wavelength meter has been developed in the region of 330-1080 nm. The meter includes a MC-300 mini-spectrometer and hollow cathode lamps. The spectrometer simultaneously records the radiation of a laser diode and hollow cathode lamps. Using the normal lines of the first and second diffraction orders near the indicated point of the spectral range, the spectral scale is calibrated with the greatest possible accuracy. The accuracy of measuring wavelength of laser diode depends on the number of normal lines near the line of radiation of the LD, it can be 0.001 nm or less. The spectrometer registration system program searches for the studied line in a given spectral range, determines the center of gravity of the contour of this line and its half-width, displays these parameters on the information board.