Nonlinear Crystals


Nonlinear Crystals

Laser Crystals









  Cr:LiSAF & Cr:LiCAF

AO & EO Crystals

Optical Crystals

Neodymium-doped Yttrium-Aluminum Garnet (Nd:YAG)

Neodymium-doped Yttrium-Aluminum Garnet (Nd:YAG) crystal, which continues as the best of the rare earth garnet materials that are characterized by four-level laser operation which permits low threshold pulse and CW operation, is the most mature and widely used solid-state laser material adopted by R&D, medical, industrial and military customers. Its main and obvious advantages are: high gain, low threshold, high efficiency, low loss at 1064nm, as well as high optical quality, good thermal conductivity and thermal shock characteristics, stable chemical and mechanical properties, which make Nd:YAG as the most suitable and commercial laser material for various modes of operation (CW, pulsed, Q-switched, mode locked and cavity dumped).

Dream Lasers has recently expanded the crystal growth facilities and production capability for Nd:YAG crystals. In order to meet OEM and R&D requirements, an improved quality assurance procedure has been implemented in Dream Lasers during the crystal growing and fabricating process.

Now, we are able to stably supply quantity of Nd:YAG rods with high optical homogeneity, consistent performance, high processing accuracy and on time delivery. Different specifications and size from 3 x 0.5mm to 12 x 150mm are available in Dream Lasers.

Standard Specifications of Nd:YAG
Dopant Concentration (atomic %): 0.7%~ 1.3%
Orientation: <111> crystalline direction (5)
Wavefront distortion: l/10 per inch, measured by a double-pass interferometer @ 633nm
Extinction Ratio:
Rods with diameter from 3 mm to 6.35 mm and with length to 100 mm:>30dB
Rods with diameter from 7 mm to 10 mm and with length to 100 mm:>28dB
Dimension Tolerances
Rods with diameter: 0.025 mm, Length: 0.5 mm
Barrel Finish: 50 80 micro-inch (RMS) ,  grooved rod barrel are also available
Ends Finish
Surface Figure: <
l/10 @ 633 nm
Parallelism: < 10 arc seconds
Perpendicularity : < 2 arc minutes
Surface quality: < 5 arc minutes
Clear Aperture: > 10/5 Scratch / Dig per MIL-O-1380A
Chamfer: <0.1mm @ 45
Clear Aperture: extend over the entire faces to the chamfered edges
Anti-Reflection Coating
Single layer MgF2 coating with high damage threshold for high power laser operation. Reflectivity R < 0.25% @ 1064nm per surface.

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