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  2. Intense pulsed light - Wikipedia

    en.wikipedia.org/wiki/Intense_pulsed_light

    Intense pulsed light (IPL) is a technology used by cosmetic and medical practitioners to perform various skin treatments for aesthetic and therapeutic purposes, including hair removal, photorejuvenation (e.g. the treatment of skin pigmentation, sun damage, and thread veins) as well as to alleviate dermatologic diseases such as acne.

  3. 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.

  4. Photoacoustic effect - Wikipedia

    en.wikipedia.org/wiki/Photoacoustic_effect

    In order to obtain this effect the light intensity must vary, either periodically (modulated light) or as a single flash (pulsed light). [1] [page needed] [2] The photoacoustic effect is quantified by measuring the formed sound (pressure changes) with appropriate detectors, such as microphones or piezoelectric sensors. The time variation of the ...

  5. Photonic curing - Wikipedia

    en.wikipedia.org/wiki/Photonic_curing

    Photonic curing of a printed nanosilver trace on PET.. Photonic curing is the high-temperature thermal processing of a thin film using pulsed light from a flashlamp. [1] When this transient processing is done on a low-temperature substrate such as plastic or paper, it is possible to attain a significantly higher temperature than the substrate [2] can ordinarily withstand under an equilibrium ...

  6. Second-harmonic generation - Wikipedia

    en.wikipedia.org/wiki/Second-harmonic_generation

    These cases typically involve intense pulsed laser beams passing through large crystals and careful alignment to obtain phase matching. In other cases, like second-harmonic imaging microscopy, only a tiny fraction of the light energy is converted to the second harmonic, but this light can nevertheless be detected with the help of optical filters.

  7. Mode locking - Wikipedia

    en.wikipedia.org/wiki/Mode_locking

    After many repetitions, the upshifted and downshifted light is swept out of the gain bandwidth of the laser. The only light unaffected is that which passes through the modulator when the induced frequency shift is zero, which forms a narrow pulse of light. The third method of active mode locking is synchronous mode locking, or synchronous pumping.

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