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  2. Q-switching - Wikipedia

    en.wikipedia.org/wiki/Q-switching

    Q-switching, sometimes known as giant pulse formation or Q-spoiling, [1] is a technique by which a laser can be made to produce a pulsed output beam. The technique allows the production of light pulses with extremely high peak power, much higher than would be produced by the same laser if it were operating in a continuous wave (constant output) mode.

  3. Tattoo removal - Wikipedia

    en.wikipedia.org/wiki/Tattoo_removal

    Before tattoo removal with Q-switched lasers began in the early 1990s, continuous-wave lasers were the standard method for tattoo removal. Continuous-wave lasers used a high energy beam that ablated the target area and destroyed surrounding tissue structures as well as tattoo ink.

  4. Low-level laser therapy - Wikipedia

    en.wikipedia.org/wiki/Low-level_laser_therapy

    In 2017, the owner of QLaser, Robert Lytle, and two of QLaser's distributors were charged with a criminal conspiracy to commit fraud. Lytle pleaded guilty to one count of conspiracy to introduce misbranded medical devices into interstate commerce with the intent to defraud and mislead, and one count of criminal contempt in January 2018.

  5. Laser - Wikipedia

    en.wikipedia.org/wiki/Laser

    A telescope in the Very Large Telescope system producing four orange laser guide stars. A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.

  6. Q-ZAR - Wikipedia

    en.wikipedia.org/wiki/Q-Zar

    Q-ZAR (called Quasar in the UK, Ireland, and called LaserGame in Sweden) is a type of laser tag that was developed by Geoff Haselhurst, Peter Robertson and Omnitronics in Perth, Western Australia.

  7. Quantum-cascade laser - Wikipedia

    en.wikipedia.org/wiki/Quantum-cascade_laser

    Quantum-cascade lasers (QCLs) are semiconductor lasers that emit in the mid- to far-infrared portion of the electromagnetic spectrum and were first demonstrated by Jérôme Faist, Federico Capasso, Deborah Sivco, Carlo Sirtori, Albert Hutchinson, and Alfred Cho at Bell Laboratories in 1994.