FOCUSING DEVICE FOR HIGH-POWER LASER BEAMS Russian patent published in 1998 - IPC

Abstract RU 2113042 C1

FIELD: power laser optics. SUBSTANCE: mirror focusing lens has reflecting mirror made of material transparent on laser beam wavelength with high refraction index; reflecting coating is applied to rear surface being cooled down and front surface of mirror is given anti-reflection coating. With oblique incidence on mirror, angle between incident and reflected beams equals θ. Mirror is wedge-shaped and placed between front flat surface and rear spherical surface at angle of α = θ/2n. With normally incident beams, wedge angle is assumed as 0 and curvature radii of front and rear surfaces of mirror relate as R₁/R₂= n. EFFECT: reduced aberration. 2 dwg

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RU 2 113 042 C1

Authors

Zabelin A.M.

Dates

1998-06-10—Published

1997-03-18—Filed