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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 populated by a pump source. Examples of active laser media include:
Er:YAG laser rod. An Er:YAG laser (erbium-doped yttrium aluminium garnet laser, erbium YAG laser) is a solid-state laser whose active laser medium is erbium-doped yttrium aluminium garnet (Er:Y 3 Al 5 O 12). Er:YAG lasers typically emit light with a wavelength of 2940 nm, which is infrared light. [1]
In November 2004, there was a recall of nearly 800,000 (680,000 Power Pro units and 102,000 Ultimate units) BowFlex machines after reports that several models had broken unexpectedly. The Consumer Product Safety Commission said that the seats could unexpectedly break and that the backboard bench could collapse when in the incline position on ...
Communications Specification for Fitness Equipment (CSAFE) is a fitness industry-wide communications specification developed in 1997 for exercise equipment. As this specification was originally developed by the company FitLinxx, sometimes it is also referred to as FitLinxx .
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 ...
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Powter, 66, a fitness icon in the '90s who made millions with three best-selling books and her wildly successful Stop the Insanity! infomercial, lost her fortune after putting it in the hands of ...
Laser types with distinct laser lines are shown above the wavelength bar, while below are shown lasers that can emit in a wavelength range. The height of the lines and bars gives an indication of the maximal power/pulse energy commercially available, while the color codifies the type of laser material (see the figure description for details).