Reported participating in microwave measurements of flash-lamp-induced ruby ground-state depletion during laser development. The first-person account describes the subsequent emission threshold and spectral narrowing of the ruby laser. [ref]
Theodore Harold Maiman by Irnee J. D'Haenens. Authored recollection, paragraphs beginning “However, a low measurement” and “In early 1960”; following spectral-narrowing paragraph.
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