## Laser far-field beam-profile measurements by the focal plane techniquesDept. of Commerce, National Bureau of Standards, Institute for Basic Standards, Electro-Magnetic Division : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1978 - Technology & Engineering - 44 pages |

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### Contents

INTRODUCTION | 1 |

SELECTION OF FOCUSING ELEMENT | 11 |

ESTIMATION OF CERTAIN ERROR SOURCES | 20 |

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Airy disc aligned analysis Annual subscription applied automatic data processing beam divergence beamsplitter BUREAU OF STANDARDS Center cm dia aperture collimated coma computed far-field curvature defined determining the focal diameter diffraction integral diffraction limit dimensions divergence measurements error sources evaluated f-number f/20 plano-convex lens Far-Field Beam-Profile Measurements far-field distribution far-field half-angle far-field patterns fast Fourier transform focal length focal plane distribution Focal Plane Technique focusing element Fourier transform Fresnel approximation Gaussian beam geometrical optics Holography imaging device index of refraction irradiance distribution knife edge Laser Far-Field Beam-Profile lenses linear measurement system misalignment modes NATIONAL BUREAU nodal slide observation plane off-axis paraboloid Office parabolic mirror parallel parameters phase error phase factor pinhole is located plane wave component problem procedure provides radiation secondary principal plane shearing plate shown in figure spatial spherical aberration spherical mirrors spot diagram technical tion Transverse Modes typical