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 microm by using a Si3N4 straight pattern; this value is compared with 8.9 microm obtained by the knife-edge method.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.