Nd:YAG

Cryslaser grows Nd:YAG using the Czochralski technique for use in industrial, medical and scientific applications. Cryslaser manufactures various finished laser rods with different sizes, slabs and wafers as well as supplying Nd:YAG blank or materials.

Advantages


● High gain

● Low threshold

● High efficiency

● Low loss at 1.06um

● Good thermal conductivity and thermal shock characteristics

● Mechanical strength

● High optical quality

● Material characteristics allow for various modes of operation (CW, pulsed, Q-switched, mode locked and cavity dumped.)


Laser Rods

● Flat/flat

●Parallel/ anti-parallel wedged

●Brewster angle

●Concave/convex radii

●Cylinder grooved




Specifications

Material 

Nd:YAG

Nd dopant level

0.1- 2.5(+/-0.1)atm%

Orientation

or

Dimension

Diameter:1-50mm, Length:0.3-220mm(upon customer’s request)

Diameter tolerance

+0/-0.04mm

Length tolerance

+0.5/-0mm

Wavefront distortion

<λ/10 per inch@632.8nm

Chamfer

<0.1mm@45°

Damage threshold

>750MW/cm2@1064nm 10ns 10HZ

Clear aperture

>95%

Flatness

λ/10 per inch@632.8nm

Scratch/Dig

10-5 @MIL-0-13830A

Barrel finish

50-80 micro-inch(RMS)

Chips

<0.1mm

Extinction ratio

>30dB(depends on actual sizes )

Perpendicularity 

<5 arc minutes

Parallelism

<10 arc seconds

Anti-Reflection coating

R<0.15%@1064nm per surface

High-Reflection coating

 Standard HR coating with R>99.8% @1064nm and R<5%@808nm

Properties

Chemical Formula

Nd:Y3Al5O12

Crystal Structure

Cubic

Lattice constant

12.01Å

Melting Point

1970°

Rupture stress

1.3-2.6*103 kg/cm2

Density 

4.55g/cm3

Mohs hardness

8.5

Thermal Expansion Coefficient

[100] Orientation--8.2x10-6/oC (0-250oC)

[110] Orientation--7.7x10-6/oC (0-250oC)

[111] Orientation--7.8x10-6/oC (0-250oC)

Laser transition

4F3/2 --> 4I11/2

Laser wavelength

1064nm

Photon energy

1.86×10-19J

Emission linewidth

4.5Å @1.064µm

Stimulated emission cross section

2.7-8.8x10-19 cm2 @Nd 1at%

Fluorescence lifetime

230µs

Refractive Index

1.8197 @1.064µm