Nd:YAG
Er:YAG
Nd:Ce:YAG
Cr4+:YAG
Nd:FLY
Undopant YAG

 

Nd:YAG

•  Advantages of Nd:YAG crystals   
       

•  High efficiency

•  Low threshold

•  High gain

•  high-average power laser

•  High optical quality

•  Good thermal conductivity and thermal shock characteristics 

•  Large mechanical strength 

•  Nd:YAG Standard Specification

--Nd:YAG Standard Specification--

Nd Dopant Concentration

High

1.10.1at%

Middle

0.90.1at%

Low

0.70.1at%

Crystallographic Orientation

[111]within 5

Wavefront Distortion

0.125/inch

Extinction Ration

3 -6.35mm: 28dB

7-10mm: 25dB

11- 13mm: 22dB

14- 15mm: 18dB

Dimensional Tolerances

Diameter

0.005mm

Length

0.05mm

End Surface Finish

Flatness/Sphericity

0.1 wave

Scratch-Dig

10-5 (per MIL-O-13830A)

End Configuration

Parallelism

10"

Perpendicularity

5

Chamfer

Depth:

0.050.03 inch

Angle:

455

Coating

Anti-reflection, R 0.25%, or other kinds of coatings upon requirement

•  Nd:YAG Material Properties

Nd:YAG Material Properties

Formula

Nd: Y 3 AL 5 O 12

Crystal Structure

Cubic

Moh Hardness

8.5

Melting Point

1970C

Density

4.55 g/cm 3

Atomic Density

1.38 x 10 20 atoms/cm 3

Thermal Conductivity

0.14Wcm -1 K -1

Thermal Expansion

6.9 x 10 -6 / o C -1 (111)

Stimulated Emission Cross Section

2.8x10 -19 cm 2

dn/dT

7.3 x 10 -6 o C -1

Young's Modulus

3.17x10 4 kg/mm--- -2

Poisson Ratio

0.25

Lasing Wavelength

1064nm

Index of Refraction

1.8197 at 1.0 mm

Fluorescent Lifetime

230 ms

Pumping Wavelength

807.5 nm

Thermal Shock Resistance

790 Wm -1