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Er Cr YSGG Laser Crystals - Large Size Low Optical Damage

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Er Cr YSGG Laser Crystals - Large Size Low Optical Damage

Place of Origin : China

Brand Name : CRYLINK

Certification : Iso9001

MOQ : 1 Pieces

Price : negotiation

Packaging Details : Carton

Delivery Time : 3-4 weeks

Payment Terms : TT

Supply Ability : 100 pieces /month

Model Number : CRYLINK-Er Cr YSGG Laser Crystal

Materials : Er,Cr:YSGG

Chemical Formula : Y2.93Sc1.43 Ga3.64O12

Lattice Constant : 12.42

Concentration : 30 at % (3.7 x 1021 cm-3 , dodecahedral Er3+) 2 at % (1.7 x 1020 cm-3 , octahedral Cr3+)

Wavefront Distortion (per inch of rod length) : 1/2

Surface Quality : 10 5 scratch-dig

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In the Cr,Er: YSGG crystal ,Cr3+ replaces the Ga3+ or Sc3+and Y3+ is replaced by Er3+, the crystal has the advantages of large size, low optical damage, high optical quality and low lasing threshold. Flashlamp or laser diode is often used to pump the laser crystal, 970 nm laser diode is regarded as the first choice to realize 2790 nm laser pumping of Er, Cr: YSGG, which can excite the Er3+ to his lasing upper level directly with high efficiency and low energy cost. Nowadays, various of method have been adopted to switch Q (such as acousto-optic, electro-optic, FTIR) to realize pulse laser output. Owing to the specificity of lasing wavelength, this kind of lasers are widely used in medical applications, scientific investigations, material processing, military and so on.

Parameter

Material and Specifications

Crystal Structure

Cubic

Chemical Formula

Y2.93Sc1.43 Ga3.64O12

Lattice Constant

12.42

Concentration

30 at % (3.7 x 1021 cm-3 , dodecahedral Er3+)

2 at % (1.7 x 1020 cm-3 , octahedral Cr3+)

Wavefront Distortion (per inch of rod length)

1/2

Surface Quality

10 5 scratch-dig

Perpendicularity

5 ‘

Parallelism

30

Barrel Finish

55 micro-inch ±5 micro-inch

Chamfer Angle

45 deg ±5 deg

Chamfer

0.005 ±0.003 in

Length Tolerance

+0.040 / -0.000 in

Diameter Tolerance

+0.0000 / -0.0020 in
Physical and Chemical Properties

Thermal conductivity(W/mK)

8

Thermal expansion coefficient

8.1×10-6/K

Thermo-optical factor(dn/dT)(10-6/K)

12.3

Hardness(Mohs)

8

Density

5.67g/cm3(Cr&Er doped)

Sizes, (dia x length), mm

from 3 x 30 to 12.7 x 127.0

Orientation

<001>, <111>

Optical and Spectral Properties

Refractive index

1.92 at 1000nm

Fluorescent Lifetime

1400 s

Emission cross-section, cm2

5.2 x 10-21

Lasing wavelength, m

2.791

Features

  • Super mechanical properties
  • Low pump threshold
  • High slope efficiency
  • Working at medium frequency

Medical Applications

  • 2790nm laser
  • Material processing
  • Medical applications
  • Scientific investigations
  • Military
  • Nonlinear optics

Product Tags:

laser material

      

titanium doped sapphire

      
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