The method of attenuating the high power of laser radiation on a wavelength of 1,06 μm with use of a diffraction grating The method of attenuating the high power of laser radiation on a wavelength of 1,06 μm with use of a diffraction grating

Abstract

The method of attenuating the high power of laser radiation on a wavelength of 1,06 μm with use of a diffraction grating is considered. The thermal regimes of the attenuator operation and various cooling systems are considered. The uncertainities in the attenuation coefficient associated with the polarization and spectral composition of the radiation, the absorption of radiation, mechanical deformation, and the temperature regime of the diffraction grating are estimated. It is shown that the described attenuator can be used as a calibrated attenuator of powerful laser radiation with a wavelength of 1.06 μm with an uncertainity of 0,64 %.