Spectra-Physics; its founding; role played by John Atwood of Perkin-Elmer; the 1.15 micron and 6328A helium-neon lasers; relation with Bell Laboratories scientists; Bloom’s role at Spectra-Physics; Spectra-Physics’s transition from a technologically to commercially oriented firm; the 3.39 micron helium-neon line; consultant at Coherent, Inc.
