Neodymium-doped yttrium aluminum garnet lasers

Neodymium-doped yttrium aluminum garnet laser (NldiYAG)... 

Before the invention of lasers in 1960 (Maiman), radiation emitted by the mercury arc, especially at 435.8 and 404.7 nm, has been u.sed for exciting Raman spectra (Brandmiiller and Moser, 1962). Today, most types of lasers ( continuous wave (cw) and pulsed, gas, solid state, semiconductor, etc.), with emission lines from the UV to the NIR region, are used as radiation sources for the excitation of Raman spectra. Especially argon ion lasers with lines at 488 and 515 nm are presently employed. NIR Raman spectra are excited mainly with a neodymium doped yttrium-aluminum garnet laser (Nd YAG), emitting at 1064 nm. 

Neodymium-doped yttrium aluminum garnet lasers have found extensive applications as range finders and have also become standard laboratory equipment for research in photochemistry and related fields. 

For the SHG measurements we used the frequency-doubled output of a Q-switched neodymium-doped yttrium aluminum garnet laser at 532 nm with a 7-nsec pulse width as the pump beam. 

Neodymium-doped yttrium-aluminum garnet is among the most commonly applied laser material and has broad application (neodymium-YAG). 

In a solid state laser, the active species is distributed throughout a solid, usually crystalline, material, although glass can also be used as a host. The lasers are robust and frequently tunable, though heat dissipation can sometimes be an issue. Certain types of solid state crystals, for example neodymium-doped yttrium aluminum garnet (Nd YAG), can be pumped by diode lasers instead of by other lasers or by flashlamps, which is often the case for other materials. Such diode-pumped, solid state systems are reliable, economical, compact, and easy to operate—in fact, many commercial systems are turnkey, needing only to be plugged in and turned on to operate. 

Many real-world samples fluoresce when iUuminated with visible light, especially green light from a frequency-doubled neodymium-doped yttrium aluminum garnet (Nd-YAG) laser at 532nm or from an argon ion laser at 488 or 514.5nm. 

J.R. Lu, et al., Neodymium doped yttrium aluminum garnet (Y3A15012) nanocrystalline ceramics - a new generation of solid state laser and optical materials.. /. Alloys Compd. 341(1-2), 220-225 (2002). 

Neodymium-doped yttrium-aluminum-garnet, a crystal that is used for lasers. It lases at a fundamental wavelength of 1064nm, but can be frequency tripled to 355 nm. 

Nd YAG neodymium-doped yttrium aluminum garnet, (a typical solid laser... 

One type of laser used in the treatment of vascular skin lesions is a neodymium-doped yttrium aluminum garnet or Nd YAG laser. The wavelength commonly used in these treatments is 532 mn. 

To explain this application, we consider the schematic drawing of a giant pulse laser, shown in Fig. 7. Such a laser consists essentially of (1) a rod of active material AM (for example a ruby or neodymium glass or neodymium-doped rod of yttrium-aluminum garnet) excited by the light pulse from a flashlamp F,... 

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