Yb YAG Laser Crystals

Product Details

Laser Crystal—Yb:YAG

1 Description

Yb:YAG crystal possesses many attractive laser characteristics including high quantum efficiency, no excited state absorption and upconversion loss, long radiative lifetime of the upper laser level, large absorption width, broad emission width, good optical, thermal and mechanical properties, so it is considered as the most potential gain for high efficiency, high power diode-pumped solid-state lasers.

 

2 Features

Wide absorption bandwidth

Low lasing threshold

High slope efficiency

Large luminescence cross-section

Linearly polarized emission and single-mode output

 

3 Applications

Model-locked laser

Laser welding

Laser cutting

Laser marking

 

4  Main Specifications

Materials

Yb:YAG

Yb Concentration tolerance (atm%)

0.5, 1, 2, 3, 5, 7.5, 10, 15, 20, 25%

Orientation

[001] or [110] or [111] < ±0.5°

Parallel

10〞

Perpendicular

surface Quality

10/5

Wavefront Distortion

λ/4 @632nm

Surface Flatness

λ/8 @632nm

Clear Aperture

>95%

Chamfer

<0.1×45°

Thickness/Diameter Tolerance

±0.05 mm

Maximum dimensions

dia 50×100mm

Coatings

AR/AR @940+1030;HR @1030+HT @940+AR1030;


5 Material characteristics

Physical and chemical characteristics

Properties  

Yb:YAG

Crystal Structure  

cubic - la3d

Lattice Constants

12.01Ä

Density  

4.56 g/cm3

Melting Point  

1970°C

Refractive Index @1.030 µm 

1.82

Thermal Conductivity /(W·m-1·K-1@25°C)

14

Specific Heat/ (J·g-1·K-1)

0.59

Thermal Expansion /(10-6·K-1@25°C ) 

8.2 [100]

7.7 [110]

7.8 [111]

Hardness (Mohs)  

8.5

Young`s Modulus /GPa

317    

Shear Modulus / GPa

54.66    

Extinction Ratio

25dB

Poisson Ratio

0.25

 

Optical characteristics

Properties

Yb:YAG

pump transition wavelength, λp (nm)

941,969

laser transition wavelength, λl (nm)

1030

pump transition bandwidth,Δλp (nm)

18

laser transition bandwidth, Δλl (nm)

~6

pump transition peak cross section,σp (E-20 cm2)

0.77

laser transition peak cross section, σl (E-20 cm2)

2.1

pump ransition saturation intensity,φp (kW/cm2)

28

laser transition saturation intensity, φl (kW/cm2)

9.5

laser transition saturation fluence, Γl,sat (J/cm2)

9

minimum pump intensity, Imin (kW/cm2)

2.8

upper laser manifold lifetime,τ(msec)

0.97

quantum defect fraction

0.11

fractional heat generation

~0.11

 

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Absorption Spectrum of Yb:YAG crystal

Yb3+ energy level in Yb:YAG

 

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Fluorescence Lifetime of 5%Yb:YAG crystal

Fluorescence Spectrum of 5%Yb:YAG crystal


Standard products

Dimensions, mm

Doping concentration of Yb, %

Coating

End Configuration

5×5×2

5

AR/AR@940+1030 nm

right-angle cut

5×5×3

5×5×5

5×5×2

HR@1030+HT@940/AR@1030 nm

5×5×3

5×5×5

5×5×1

10

AR/AR@940+1030 nm

right-angle cut

5×5×2

5×5×3

5×5×1

HR@1030+HT@940/AR@1030 nm

5×5×0.5

20

AR/AR@940+1030 nm

right-angle cut

5×5×1

5×5×2

5×5×0.5

HR@1030+HT@940/AR@1030 nm

5×5×2

5

none

Brewster angle cut

5×5×3

5×5×5

5×5×1

10

5×5×2

5×5×3


With Laser Crystals for sale, it is one of the leading manufacturers and supplies of good yb yag laser crystals, welcome to buy and wholesale products at good price from our factory.

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