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Nd:YAG (neodymium-doped yttrium aluminum garnet) is a crystal that is utilized as a lasing medium for solid-state lasers. The dopant, triply ionized neodymium, Nd(III), commonly replaces a small fraction (1%) of the yttrium particles in the host crystal structure of the yttrium aluminum garnet (YAG), since the two particles are of comparative size. It is the neodymium particle which gives the lasing movement in the crystal, in an indistinguishable manner from red chromium particle in ruby lasers.

Nd:YAG lasers are optically pumped utilizing a flashtube or laser diodes. These are a standout amongst the most widely recognized sorts of laser, and are utilized for various applications. Nd:YAG lasers usually radiate light with a wavelength of 1064 nm, in the infrared, there are also transitions around 940, 1120, 1320, and 1440 nm. Nd:YAG lasers work in both modes pulse as well as cw. The high intensity pulses might be productively frequency multiplied to generate laser light at 532 nm, or higher harmonics at 355, 266 and 213 nm.

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  • Entire spectrum from UV to IR
  • High peak power pulses thus quicker processing of thin materials
  • Short pulse durations
  • Fast repetition rates
  • No temperature build up – high temperature processing on low temperature substrates
  • High throughput
  • Stackable optical modules allow larger exposure areas
  • Non-toxic (no Hg)
  • High DPI capabilities
  • Great for applications that need high power density (Metal Marking)
  • Can be Q-Switched for pulsed or CW operation. (Allows for minor laser ablation)
Arc Lamp pumped Laser : It is effective for continuous-wave operation.

Flash lamp pumped Laser : It generates short pulsed output beam with high peak power. Flash Lamp essentially consists of a glass tube, filled with some gas (e.g. Krypton or Xenon) and having a special alloy metallic anode & cathode at every end.

Side pumped Rod Laser : The laser crystal of a light pumped laser is moderately long side-pumped crystal rod, adjusted to the length of the Krypton or Xenon lamp. In many cases, laser rod and lamp are placed within an oval shaped chamber with reflective walls, so a large percentage of generated light can be absorbed by the laser rod. Excessive heat is removed by the cooling water and an additional filter glass is used to protect the laser rod from the ultra violet light released by the lamp.

Face-pumped Slab Laser : Another suitable solid-state laser for lamp pumping is the face-pumped Slab Laser. In face-pumped Slab Laser an arrangement of lamps pump light through its large face from both sides. This pumped light can be introduced through a layer of cooling water. Low brightness of lamp reduces the possibility of arithmetic analysis for example; end pumping requires enhanced brightness only possible by laser diodes or sometimes by other kinds of laser sources.

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