Nd:YCOB

Nd:YCOB
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CRYLINK’s Nd: YCOB crystal products, also known as Nd: YCa4O(BO3)3 crystal. It is a kind of laser crystal product with excellent comprehensive performance. It is widely used in frequency doubling laser, ranging, and LD pumping. The product has uniform melting behavior and self-doubling laser action characteristics. It can be used in solid-state laser, Nd: YCOB laser, continuous wave self-frequency doubling laser, and diode pump ranging system products.

  • Consistent melting behavior
  • Has the characteristics of self-multiplier laser action

Standard

Orientation Tolerance< 0.5°
Thickness/Diameter Tolerance±0.01 mm
Surface Finish<λ/8 @632nm
Wavefront Distortion<λ/4 @632nm
Surface Quality5-Oct
Parallel30〞
Vertical15ˊ
Clear Aperture>90%
Chamfer<0.2×45°

Basic Parameters

Chemical FormulaNd:YCa4O(BO3)3
Crystal SystemMonoslope (m), Biaxial
Lattice Constanta = 0.8076Å，b=1.6020 Å，

c = 0.3527Å，β=101.23°
Melting Point1510℃
Density3.31 g/cm3
Mohs Hardness6.0-6.5 (mohs)
Growth MethodCzochralski growth
Refractive Index@1064nmnx=1.6844, ny=1.7152, nz=1.7256
Fluorescence Lifetime105μm
Emission Cross Section0.45×10-19 cm2
Absorption Peak796, 812nm
Absorption Cross Section at Pump Wavelength2.3×10-20 cm2
Absorption Cross Section at SFD Wavelength0.40×10-20 cm2
Transmission Range1000-2600nm
Damage Threshold>1 Gw/cm2@532 nm, 6 ns

SHG的deff @1.06 μm (Type I)

1.1 pm/V

Parameters of the Sellmeier Equation

Sellmeier equationn2(λ)=A+B/(λ2-C)-D•λ2
Parameternxnynz
A2.782322.887392.92685
B0.011200.012230.01474
C0.089900.088550.07466
D7.2561×10−56.1142×10−55.2148×10−5

Spectrum

Nd：YCOB laser crystal absorption spectrum crylink
Nd：YCOB Absorption Curve

References

[1]Crystal growth of YCa4O(BO3)3 and its orientation
[2]Electro-optic, thermo-optic, and dielectric properties of YCOB and Nd：YCOB crystals：comparative study
[3]Growth and Spectra of YCOB and Nd：YCOB Crystals
[4]Investigation of diode-pumped, self-frequency doubled RGB lasers from Nd：YCOB crystals
[5]Laser and self-doubling properties of a Nd：YCOB crystal cut as a sphere and inserted in a cavity
[6]Q-switched operation of a Nd：YCOB laser

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