Nd YAG Laser

Neodymium-doped yttrium aluminum garnet laser (Nd YAG)... 

Haufler et al. (1991) set up the apparatus shown in figure 1 to explore the effect of wall temperature on fullerene yields by laser vaporization. In this apparatus graphite is vaporized from the end of the graphite rod by a softly focused pulsed visible laser (Nd YAG, 532 nm, 5-ns pulse, 300 mJ pulse-1). When the walls of the tube are at room temperature no fullerenes are found in the resulting soot only when the walls of the tube were heated to 1000 °C were any fullerenes obtained. As the furnace temperature was increased further, the yields increased reaching 20% Cf0F at 1200 °C, which was the maximum temperature obtainable with this apparatus. 

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. 

Solid state lasers Nd YAG, IR 1.064 Marking, cutting, welding... 

Picosecond dye lasers Nd YAG fundamental output at 1064nm, 355nm (third harmonic), 266nm (fourth harmonic)... 

Excimer laser N2 laser Flashlamp Ar laser Kr laser Nd YAG laser A/2 530 nm X/y. 355 nm Copper-vapor laser... 

Dye Liquid Organic dye in a non-absorbing solvent. Dye circulated from a reservoir to avoid problems from photodegradation and triplet state formation Nitrogen laser Excimer laser Nd YAG laser Depends on dye Stilbene (390 35 nm) Coumarin 102 (460-515 nm) Rhodamine G (570-640 nm) Ring-dye laser—0.1 ps 1 MW... 

Ignat S, Sallamand P, Grevey D, Lambertin M, (2(X)4), Magnesium alloys laser (Nd YAG) cladding and alloying with side iniection of aluminium mwder . Applied Surface Science, 225, 124-134. 

R D of Advanced Ceramics Activities in China and SICCAS 2.2 Transparent ceramic for laser (Nd YAG)... 

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