A Bell Labs scientist studies a helium-neon laser to determine the relationship of power
output to the length of the cavity, ca. 1963-1964. Courtesy AT&T Archives and
History Center

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© 2006 American Institute of Physics, One Physics Ellipse, College Park, MD 20740-3843. Email: aipinfo@aip.org Phone: 301-209-3100; Fax: 301-209-0843