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  2. Neodymium-doped yttrium orthovanadate - Wikipedia

    en.wikipedia.org/wiki/Neodymium-doped_yttrium...

    It is commonly used as an active laser medium for diode-pumped solid-state lasers. It comes as a transparent blue-tinted material. It comes as a transparent blue-tinted material. It is birefringent , therefore rods made of it are usually rectangular.

  3. The 9 Best Sale Items at Costco Right Now - AOL

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    With the new year comes a fresh batch of Costco deals, and this month’s savings are too good to miss. The latest sale, running from December 26 through January 20, features incredible discounts ...

  4. Yttrium aluminium garnet - Wikipedia

    en.wikipedia.org/wiki/Yttrium_aluminium_garnet

    Nd:YAG laser rod 0.5 cm in diameter. Neodymium - doped YAG ( Nd:YAG ) was developed in the early 1960s, and the first working Nd:YAG laser was invented in 1964. Neodymium-YAG is the most widely used active laser medium in solid-state lasers , being used for everything from low-power continuous-wave lasers to high-power Q-switched (pulsed ...

  5. Ruby laser - Wikipedia

    en.wikipedia.org/wiki/Ruby_laser

    The ruby laser is a three level solid state laser. The active laser medium (laser gain/amplification medium) is a synthetic ruby rod that is energized through optical pumping, typically by a xenon flashtube. Ruby has very broad and powerful absorption bands in the visual spectrum, at 400 and 550 nm, and a very long fluorescence lifetime of 3 ...

  6. Active laser medium - Wikipedia

    en.wikipedia.org/wiki/Active_laser_medium

    Laser rods (from left to right): Ruby, Alexandrite, Er:YAG, Nd:YAG The active laser medium (also called a gain medium or lasing medium ) is the source of optical gain within a laser . The gain results from the stimulated emission of photons through electronic or molecular transitions to a lower energy state from a higher energy state previously ...

  7. Costco’s Black Friday Tech and Electronics Deals You ... - AOL

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    The Fitbit Versa 4 smartwatch is $80 off during Costco’s pre-Black Friday sale. Costco doesn’t mention a specific price on its flyer, but the watch normally retails for about $230 . This, the ...

  8. Solid-state laser - Wikipedia

    en.wikipedia.org/wiki/Solid-state_laser

    Laser rods (from left to right): Ruby, alexandrite, Er:YAG, Nd:YAG. A solid-state laser is a laser that uses a gain medium that is a solid, rather than a liquid as in dye lasers or a gas as in gas lasers. [1] Semiconductor-based lasers are also in the solid state, but are generally considered as a separate class from solid-state lasers, called ...

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