Method for measuring the spot size of a laser beam using a boundary-diffraction wave
- 1 August 1987
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 12 (8) , 552-554
- https://doi.org/10.1364/ol.12.000552
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.Keywords
This publication has 13 references indexed in Scilit:
- Measurement of Gaussian beam parametersApplied Optics, 1984
- Techniques for measuring 1-μm diam Gaussian beamsApplied Optics, 1984
- Measurement of submicron laser beam radiiApplied Optics, 1981
- Ronchi Ruling Method for Measuring Gaussian Beam DiameterOptical Engineering, 1979
- Laser beam distribution in the focal regionApplied Optics, 1978
- Knife-edge scanning measurements of subwavelength focused light beamsApplied Optics, 1977
- A simple technique for quickly measuring the spot size of Gaussian laser beamsOptics & Laser Technology, 1976
- Measurement of the μm sized radius of Gaussian laser beam using the scanning knife-edgeApplied Optics, 1975
- Measurement of the radius of a high-power laser beam near the focus of a lensJournal of Physics E: Scientific Instruments, 1972
- Scanning Laser Microscope for Biological InvestigationsApplied Optics, 1971