Er:YSGG

Er:YSGG

Er: YSGG crystal products are also known as erbium-doped yttrium scandium gallium garnet crystal. It is a kind of laser crystal product with excellent comprehensive performance. It is widely used in oral diseases, optical communication, and laser medical treatment. The product has the characteristics of high thermal conductivity, stable physical and chemical properties, and high quantum efficiency. It can be used in Er: YSGG laser, solid pulse high-frequency laser, and water laser products.

Features of Er: YSGG crystal:

  • High quantum efficiency
  • High thermal conductivity
  • Physical and chemical properties are stable
  • Lasers can be emitted at 1.6 m and 2.78 m wavelengths

Standard

Stem DiameterUp to 15 mm
Diameter Tolerance+0.0000 / -0.0020
Length of Tolerance+0.040 / -0.000
Oblique/Wedge Angle±5 min
Chamfering0.005 ±0.003@45°
Parallelism30 arcsec
Flatnessλ/10 @ 633 nm
Vertical Degree5 arc minutes
Surface Quality10-5 S-D
Wavefront Aberrationλ/2 per inch@633nm

Basic Parameters

CrystalEr3+:YSGG
Crystal StructureCubic
Doping Concentration30-50 at.%
Space GroupOh10
Lattice Constant12.42 Å
Density5.2 g/cm3
Mohs Hardness>7
Coefficient of Thermal Expansion8.1×10-6 K-1
Orientation<001> <111>
Thermal Conductivity0.079W cm-1 K-1
Refractive Index1.926@1.064 µm
dn/dT7×10-6 K-1
Generated Wavelength2.797; 2.823µm

Spectrum

Er-YSGG-emission-spectrum-short-wave-CrylinkEr-YSGG-emission-spectrum-long-wave-Crylink
Er: YSGG Emission Spectrum (short wave)Er: YSGG Emission Spectrum (long wave)
Er-YSGG-absorption-spectrum-Crylink
Er: YSGG Absorption Spectrum

References

[1]Bulk growth and an efficient mid-IR laser of high-quality Er:YSGG crystals
[2]Comparison of a diode pumped Er:YSGG and Er:YAG laser in the bounce geometry at the 3 μm transition
[3]Optical spectroscopy of Er:YSGG laser crystal

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