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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 12, Iss. 8 — Aug. 1, 1987
  • pp: 552–554

Method for measuring the spot size of a laser beam using a boundary-diffraction wave

S. Kimura and C. Munakata  »View Author Affiliations


Optics Letters, Vol. 12, Issue 8, pp. 552-554 (1987)
http://dx.doi.org/10.1364/OL.12.000552


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Abstract

A new and simple method for measuring the spot size of a laser beam is presented. In this method, the spot of a laser beam is scanned transversely across a straight boundary, and the intensity profile of the boundary-diffraction wave is observed. This intensity profile makes it possible to measure the spot size. The spot size of a He–Ne laser beam (wavelength 633 nm) has been measured to be 8.3 μm by using a Si3N4 straight pattern; this value is compared with 8.9 μm obtained by the knife-edge method.

© 1987 Optical Society of America

History
Original Manuscript: February 17, 1987
Manuscript Accepted: May 21, 1987
Published: August 1, 1987

Citation
S. Kimura and C. Munakata, "Method for measuring the spot size of a laser beam using a boundary-diffraction wave," Opt. Lett. 12, 552-554 (1987)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-12-8-552

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