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  2. Ion laser - Wikipedia

    en.wikipedia.org/wiki/Ion_laser

    An ion laser is a gas laser that uses an ionized gas as its lasing medium. [1] Like other gas lasers, ion lasers feature a sealed cavity containing the laser medium and mirrors forming a Fabry–Pérot resonator. Unlike helium–neon lasers, the energy level transitions that contribute to laser action come from ions.

  3. Hydrogen fluoride laser - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_fluoride_laser

    The hydrogen fluoride laser is an infrared chemical laser. It is capable of delivering continuous output power in the megawatt range. [1] Hydrogen fluoride lasers operate at the wavelength of 2.7-2.9 μm. This wavelength is absorbed by the atmosphere, effectively attenuating the beam and reducing its reach, unless used in a vacuum environment.

  4. Lasers in cancer treatment - Wikipedia

    en.wikipedia.org/wiki/Lasers_in_Cancer_Treatment

    Lasers are used to treat cancer in several different ways. Their high-intensity light can be used to shrink or destroy tumors or precancerous growths. Lasers are most commonly used to treat superficial cancers (cancers on the surface of the body or the lining of internal organs) such as basal-cell skin cancer and the very early stages of some cancers, such as cervical, penile, vaginal, vulvar ...

  5. Gas laser - Wikipedia

    en.wikipedia.org/wiki/Gas_laser

    Gas laser. A gas laser is a laser in which an electric current is discharged through a gas to produce coherent light. The gas laser was the first continuous-light laser and the first laser to operate on the principle of converting electrical energy to a laser light output. The first gas laser, the Helium–neon laser (HeNe), was co-invented by ...

  6. Laser-powered phosphor display - Wikipedia

    en.wikipedia.org/wiki/Laser-powered_phosphor_display

    Laser-powered phosphor display ( LPD) is a large-format display technology similar to the cathode ray tube (CRT). Prysm, Inc., a video wall designer and manufacturer in Silicon Valley, California, invented and patented [1] the LPD technology. [2] [3] The key components of the LPD technology are its TD2 tiles, its image processor, and its ...

  7. Laser sight (firearms) - Wikipedia

    en.wikipedia.org/wiki/Laser_sight_(firearms)

    A laser sight is a device attached or integral to a firearm to aid target acquisition. Unlike optical and iron sights where the user looks through the device to aim at the target, laser sights project a beam onto the target, providing a visual reference point. Although lasers in the visible part of the spectrum are most common, invisible ...

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