Nd:Ce:YAG

Nd:Ce:YAG is an excellent laser material widely used for no-water cooling and miniature laser systems. In double doped Nd:Ce:YAG crystals Cerium are chosen as sensitizer for Nd3+ ions because of its strong absorption in UV spectral region at flash lamp pumping and efficient energy transfer to the Nd3+ excited state.

As a result, thermal distortion in Nd: Ce:YAG is low and the output laser energy is greater than that in Nd:YAG at the same pumping. Therefore it is possible to realize high power lasers with good beam quality.

Lasing wavelength at 1064 nm, laser damage threshold and thermal conductivity of the Nd: Ce:YAG crystals are the same as for Nd:YAG. It is the most ideal laser material for the air cooling lasers .It is suitable for different modes of operation (pulsed, Q-switched, mode locked) and high-average power lasers.



Featured

Low threshold

Good thermal stability

High optical quality and high efficiency

Good anti-violet radiation property


Properties

Laser Wavelength

1.064μm

Photon Energy

1.86×10-19J@1064nm

Emission Linewidth

4.5Å@1064nm

Emission Cross Section (Nd1at%)

2.7~8.8×10-19cm-2

rescence Lifetime (Nd1at%)

230μs

Index of Refraction

1.8197@1064nm

Crystal Structure

Cubic

Lattice Parameters

12.01Å

Melting Point

1970℃

Moh Hardness

8.5

Density

4.56g/cm3

Specific Heat (0-20)

0.59J/g.cm3

Young's Modulus

3.17×104Kg/mm2

Thermal Expansion Coefficient

[100]Direction:8.2×10-6/℃(0~250℃)

[110]Direction:7.7×10-6/℃(0~250℃)

[111]Direction:7.8×10-6/℃(0~250℃)

Thermal Conductivity

14W/m/K(@20℃)

10.5W/m/K(@100℃)

Thermal Optical Coefficient (dn/dT)

7.3×10-6/℃

Thermal Shock Resistance

790W/m

Solubility

Water: Insoluble; Common Acids: Slightly



Specifications

Dopant concentration

Nd:1.1~1.4at%, Ce:0.05~0.1at%

Orientation

[111]±5°

Diameter Tolerance

+0/-0.05mm

Length Tolerance

+0.5/-0mm

Surface Flatness

<λ/[email protected]

Wavefront Distortion

<λ/[email protected]

Surface Quality

10/5

Clear Aperture

>95%

Parallelism

<10 arc seconds

Perpendicularity

<5 arc minutes

Chamfer

0.1mm@45°

Extinction Ratio

>30dB

Coating

AR/HR/PR coating upon customer’s request




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