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Publication Citation: Accurate, inexpensive testing of handheld lasers for safe use and operation

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Author(s): Marla L. Dowell; Joshua A. Hadler;
Title: Accurate, inexpensive testing of handheld lasers for safe use and operation
Published: March 07, 2013
Abstract: An accurate, inexpensive test bed for measurements of optical power emitted from handheld lasers is described. Our test bed consists of a thermopile detector, bandpass optical filters, an adjustable iris, and self-centering holders for mounting of the handheld lasers. This test bed serves as a quick and inexpensive method for evaluating the compliance of a laser pointer‰s power output with the upper power limits imposed by the U.S. Code of Federal Regulations. Measurements on a random sample of 23 Class 3R laser pointers yielded a compliance rate of only 26%. A discussion of potential laser pointer hazards is included.
Citation: Measurement Science & Technology
Volume: 24
Issue: 4
Pages: 7 pp.
Keywords: laser metrology; laser pointers; laser safety
Research Areas: Optical Metrology, Laser Physics, Optical Physics
DOI: http://dx.doi.org/10.1088/0957-0233/24/4/042001  (Note: May link to a non-U.S. Government webpage)
PDF version: PDF Document Click here to retrieve PDF version of paper (556KB)