On the Accuracy of Gaia Photometry

The errors of Gaia photometry originating from tolerancies of the light filter mean wavelengths and half-widths are investigated

Creation of universal laser equipment with expanded possibilites of application

A universal laser machine with highly improved technical parameters has been created based on the laboratory model with wide opportunities for small and medium-sized businesses of materials processing. The method of modeling and the sample model which allow us to imitate a gas flow during laser cutting and to study distribution of the flow in front of and behind the cut slot at low cost have been created. The antireflective coatings for the machine optical system and 1064 nm wavelength laser radiation of the Nd:YAG laser are selected when the laser beam falls on the surface of the optical element at the angle of less than 30°, has been presentedVytauto Didžiojo universitetasŽemės ūkio akademij

Diffraction control of reflected beam by chirped mirror

We propose and demonstrate a novel functionality of chirped mirror for monochromatic light beams: a diffraction control in reflections resulting in focusing or imaging of beams. The chirped mirrors, commonly used for manipulating temporal profiles of pulses, here are applied for manipulating the spatial dispersion of a monochromatic beam. By penetrating into dielectric layers of chirped mirror, the monochromatic beam experiences the negative diffraction, therefore the beam diverge propagating in front and behind the structure in normal diffraction region can be compensated inside this structure with negative diffraction. The result is focusing or imaging of the reflected beam from a flat interface of chirped mirror without optical axis.Postprint (published version

Diffraction control of reflected beam by chirped mirror

We propose and demonstrate a novel functionality of chirped mirror for monochromatic light beams: a diffraction control in reflections resulting in focusing or imaging of beams. The chirped mirrors, commonly used for manipulating temporal profiles of pulses, here are applied for manipulating the spatial dispersion of a monochromatic beam. By penetrating into dielectric layers of chirped mirror, the monochromatic beam experiences the negative diffraction, therefore the beam diverge propagating in front and behind the structure in normal diffraction region can be compensated inside this structure with negative diffraction. The result is focusing or imaging of the reflected beam from a flat interface of chirped mirror without optical axis