METHOD AND APPARATUS FOR MEASURING BANDWIDTH OF AN OPTICAL SPECTRUM OUTPUT OF A VERY SMALL WAVELENGTH VERY NARROW BANDWIDTH HIGH POWER LASER

摘要

applied to the measured parameter representing the parameters of the unknown spectral bandwidth of the measurement to provide an output optical bandwidth measurement unit; And the formula: reporting parameter ("RP") = A * (measured parameter ("MP")) + C reported applied to calculate a report parameter of the unknown bandwidth of the spectrum being measured according to the parameter calculation unit; includes a laser Device and method for controlling a laser system that may include a spectrometer adapted to measure an unknown bandwidth of the spectrum of light emitted from the disclosed. The RP and MP are different types of parameters and values of A and C is determined based on the calibration of the optical bandwidth measuring unit MP response value for the light of the known value of the RP. Optical bandwidth measuring unit may include an interference or dispersion of optical instruments such as etalon. RP is, for example, FWXM and MP can be a parameter of, for example, FWX'M may be a parameter in, and X X '. RP is, for example, be a parameter of at EX% and MP may be, for example, a parameter at FWXM.