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Er,Cr:YSGG Laser Crystal

22 May 2019

Description

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 Å
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
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 ,

Optical and Spectral Properties

Refractive index 1.92 at 1000nm
Fluorescent Lifetime 1400 μs
Emission cross-section, cm2 5.2 x 10-21
Lasing wavelength, µm 2.791

Absorption and Emission Spectrum

Feature 

  • Good crystal quality

  • Super mechanical properties

  • Low pump threshold

  • High slope efficiency

  • Working at medium frequency

Application

Medical Applications

Scientific investigations

Military

Nonlinear optics

CONTACT DETAILS
Nanjing Crylink Photonics Co.,Ltd
No.3, Hengda Road, Economic and Technological Development Zone, Nanjing, China
No.200,Zhaoxian Road,Jiading District,Shanghai City
Nanjing
Jiangsu
210038
China
Tel: (86)025-68790684
Fax: (86)025-68790685
Email Us
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