FIELD: optics.
SUBSTANCE: invention relates to methods of adjusting optical systems containing off-axis parabolic mirrors, and is of interest for use in laser optical systems. A method of adjusting an off-axis parabolic mirror with a photosensor involves focusing collimated laser radiation with an off-axis parabolic mirror which is adjusted by varying the angle of inclination along the horizontal and vertical axes, which is located in a sealed chamber. Pulsed laser radiation is used with power in the pulse sufficient for multiphoton ionisation of gas inside the sealed chamber; zones of multiphoton ionization are formed in astigmatic foci of the off-axis parabolic mirror and the off-axis parabolic mirror is adjusted to achieve the maximum value of light flux detected by the photosensor.
EFFECT: simplification of the adjustment process in a sealed chamber, expansion of the range of equipment.
1 cl, 2 dwg
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