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  1. PEN - Penumbra, Inc.

    Yahoo Finance

    188.01-3.33 (-1.74%)

    at Thu, May 30, 2024, 4:00PM EDT - U.S. markets closed

    After Hours 187.97 -0.04 (-0.02%)

    Delayed Quote

    • Open 190.18
    • High 192.07
    • Low 185.13
    • Prev. Close 191.34
    • 52 Wk. High 348.67
    • 52 Wk. Low 180.93
    • P/E 79.33
    • Mkt. Cap 7.29B
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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. The small width of the beam and the low power of typical laser pointers make the beam itself invisible in a ...

  4. Directed-energy weapon - Wikipedia

    en.wikipedia.org/wiki/Directed-energy_weapon

    The Counter-electronics High Power Microwave Advanced Missile Project (CHAMP) is a joint concept technology demonstration led by the Air Force Research Laboratory, Directed Energy Directorate at Kirtland Air Force Base to develop an air-launched directed-energy weapon capable of incapacitating or damaging electronic systems by means of an EMP (electromagnetic pulse).

  5. List of laser applications - Wikipedia

    en.wikipedia.org/wiki/List_of_laser_applications

    Beyond this power threshold there are thermal issues related to the optics that separate these lasers from their lower-power counterparts. Laser systems in the 50-300W range are used primarily for pumping, plastic welding and soldering applications. Lasers above 300W are used in brazing, thin metal welding, and sheet metal cutting applications.

  6. Scientists figure out how to make lasers nine-times ... - AOL

    www.aol.com/scientists-figure-lasers-nine-times...

    High-power fibre lasers are vital in manufacturing and defence, and becoming more so with the proliferation of cheap, unmanned aerial vehicles (drones) in modern battlefields,” said Dr Linh ...

  7. Laser safety - Wikipedia

    en.wikipedia.org/wiki/Laser_safety

    Laser safety. Laser radiation safety is the safe design, use and implementation of lasers to minimize the risk of laser accidents, especially those involving eye injuries. Since even relatively small amounts of laser light can lead to permanent eye injuries, the sale and usage of lasers is typically subject to government regulations.

  8. List of laser types - Wikipedia

    en.wikipedia.org/wiki/List_of_laser_types

    Flashlamp, laser diode Used in extremely high-power (terawatt scale), high-energy multiple beam systems for inertial confinement fusion. Nd:Glass lasers are usually frequency tripled to the third harmonic at 351 nm in laser fusion devices. Titanium sapphire (Ti:sapphire) laser 650-1100 nm Other laser Spectroscopy, LIDAR, research.