In 1960, after Theodore Maiman invented the ruby laser, a new demand for flashtubes began for use in lasers, and new interest was taken in the study of the lamps.
42.
He then switched from theoretical physics to experimental physics in graduate studies at MIT under the supervision of Charles Hard Townes, shortly after the experimental realization of the ruby laser.
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The laser hair removal technique was discovered as a side effect of tattoo removal, in which a ruby laser not only removed the tattoo but killed the hair around it.
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In one study of 13 people, Anderson found that a ruby laser made by Spectrum Medical Technologies in Natick, Mass . produces a delay in hair regrowth of about six months.
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Due to its limits in output power, tunability, and complications in operating and cooling the units, the continuous ruby laser was quickly replaced with more versatile Nd : YAG, and argon lasers.
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In the early 1980s, a new clinical study began in Canniesburn Hospital's Burns and Plastic Surgery Unit, in Glasgow, Scotland, into the effects of Q-switched ruby laser energy on blue / black tattoos.
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On May 16, 1960, at Hughes'Malibu, California, labs, Maiman's solid-state pink ruby laser emitted mankind's first coherent light with rays and published other scholarly articles describing the science and technology underlying his laser.
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Note the two broad blue and green absorption bands and the narrow absorption band at 694 nm, which is the wavelength of the ruby laser . Ruby also absorbs some of the light at its lasing wavelength.
49.
Q-switching was first proposed in 1958 by Gordon Gould, and independently discovered and demonstrated in 1961 or 1962 by R . W . Hellwarth and F . J . McClung using electrically switched Kerr cell shutters in a ruby laser.
50.
A pulse with duration of 25 nanoseconds and 0.5 4.2 joules of energy from a Q-switched ruby laser can initiate detonation of a PETN surface coated with a 100 nm thick aluminium layer in less than half of a microsecond.
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