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Diode-Pumped Lasers: Performance, Reliability Enhance Applications

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The latest technology advances take diode-pumped solid-state lasers into new realms of power and wavelength, enabling many new applications.

Arnd Krueger and Scott White, MKS/Spectra-Physics

Neodymium-doped crystals and glasses such as Nd:YAG (neodymium:yttrium aluminum garnet) have long been used as laser gain materials. Optically pumped, they produce an output wavelength close to 1 µm, and the excited-state lifetime of neodymium allows both CW and pulsed (Q-switched) operation. The output of powerful flashlamps and arc lamps is focused into a cylindrical laser crystal rod using elliptical reflectors to form a gain module. This module is then mounted in a laser cavity, typically many inches in length and defined by the usual high reflector and partial reflector, or...Read full article

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