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  1. PEN - Penumbra, Inc.

    Yahoo Finance

    192.81-0.85 (-0.44%)

    at Tue, May 28, 2024, 4:00PM EDT - U.S. markets closed

    Delayed Quote

    • Open 193.65
    • High 194.12
    • Low 191.15
    • Prev. Close 193.66
    • 52 Wk. High 348.67
    • 52 Wk. Low 180.93
    • P/E 81.01
    • Mkt. Cap 7.47B
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  3. Laser pointer - Wikipedia

    en.wikipedia.org/wiki/Laser_pointer

    A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot.

  4. Blue laser - Wikipedia

    en.wikipedia.org/wiki/Blue_laser

    diode-pumped solid-state infrared lasers with frequency-doubling to 408nm; upconversion of direct diode semiconductor lasers via thulium- or praseodymium-doped fibers at 480 nm; metal vapor, ionized gas lasers of helium-cadmium at 442 nm and 10200 mW; argon-ion lasers at 458 and 488 nm

  5. Diode-pumped solid-state laser - Wikipedia

    en.wikipedia.org/wiki/Diode-pumped_solid-state_laser

    A powerful (>200 mW) 808 nm wavelength infrared GaAlAs laser diode pumps a neodymium-doped yttrium aluminium garnet (Nd:YAG) or a neodymium-doped yttrium orthovanadate (Nd:YVO 4) crystal which produces 1064 nm wavelength light from the main spectral transition of neodymium ion.

  6. List of laser types - Wikipedia

    en.wikipedia.org/wiki/List_of_laser_types

    Nd:YAP laser (yttrium aluminium perovskite) 1.0646 μm [7] Flashlamp, laser diode. Surgery, tattoo removal, hair removal, research, pumping other lasers (combined with frequency doubling to produce a green 532 nm beam) Nd:Cr:YAG laser. 1.064 μm, (1.32 μm) solar radiation. Experimental production of nanopowders.

  7. Laser engraving - Wikipedia

    en.wikipedia.org/wiki/Laser_engraving

    Laser engraving. Laser marked electronic part. Laser engraving is the practice of using lasers to engrave an object. Laser marking, on the other hand, is a broader category of methods to leave marks on an object, which in some cases, also includes color change due to chemical/molecular alteration, charring, foaming, melting, ablation, and more. [1]

  8. Excimer laser - Wikipedia

    en.wikipedia.org/wiki/Excimer_laser

    An excimer laser. An excimer laser, sometimes more correctly called an exciplex laser, is a form of ultraviolet laser which is commonly used in the production of microelectronic devices, semiconductor based integrated circuits or "chips", eye surgery, and micromachining . Since the 1960s, excimer lasers have been widely used in high-resolution ...