Nd:YCOB,
Nd:GdCOB, Yb:YCOB, Yb:GdCOB Crystal, Multi-functional, self frequency doubling
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Crystals
>>> Nd:YCOB, Nd:GdCOB, Yb:YCOB, Yb:GdCOB
Crystal
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New Multiple Function Rare-Earth (Re) Calcium Oxyborate Crystals Ca4ReO(BO3)3 (Re = Y or
Gd) and Re3+:Ca4ReO(BO3)3 (Re3+ =
Nd3+ or Yb3+) Ca4ReO(BO3)3 and Nd3+ (or
Yb3+) doped Ca4ReO(BO3)3 crystal like
Ca4YO(BO3)3 (YCOB), Ca4GdO(BO3)3
(GdCOB), Nd:Ca4YO(BO3)3 (Nd:YCOB), Nd:Ca4GdO(BO3)3
(Nd:GdCOB), Yb:Ca4YO(BO3)3 (Yb:YCOB) and
Yb:Ca4GdO(BO3)3 (Yb:GdCOB) have gained tremendous interest for their excellent properties. These crystals possess
large effective nonlinear coefficients, broad transparency range, high damage threshold,
non-hygroscopicity and good mechanical properties.
Nd:YCOB,
Nd:GdCOB, Yb:YCOB, Yb:GdCOB, YCOB and GdCOB crystals can be grown by the Czochralski
method. The first four crystals can be used for infrared laser crystals and Type-I phase matching as
self-frequency-doubling (SFD) crystal. We can now supply both pure crystals and their doped ones.
Properties:
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Nd:YCOB |
Nd:GdCOB |
Yb:YCOB |
Yb:GdCOB |
YCOB |
GdCOB |
| Crystal Symmetry |
Monoclinic |
Monoclinic |
Monoclinic |
Monoclinic |
Monoclinic |
Monoclinic |
| Point Group[1] |
m |
m |
m |
m |
m |
m |
| Lattice Constants (nm) |
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Laser damage threshold
( GW/cm2 ) [2] |
~1 |
~1 |
~1 |
~1 |
~1 |
~1 |
| Nonlinearity[1] pm/v |
~1.1 |
~1.3 |
~1.1 |
~1.3 |
~1.1 |
~1.3 |
| Melting point |
1510 |
1480 |
1510 |
1480 |
1510 |
1480 |
Main Specifications:
| Dimension tolerance |
+ 0.05 mm |
| Angle tolerance |
10' |
| Scratch/dig |
10/5 |
| Flatness |
λ/4 @
633nm |
| Parallelism |
<10" |
| Perpendicularity |
<10' |
| Clear aperture |
90% |
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