Chemical and Structural Properties
| Crystal Structure |
Monoclinic、point group 2 |
| Lattice parameters |
a = 7.116 Å、b = 4.993 Å、c = 6.508 Å Z =2、β=105.62° |
| Melting point |
726℃ |
| Mohs hardness |
5 - 5.5 |
| Density |
5.033 g/cm3 |
| Specific heat |
0.5 J/gm-K at 330 K |
| Thermal expansion |
αa=4.8x10-5/K、αb=4.4x10-6/K、αc=-2.69x10-5/K |
Optical and Nonlinear optical properties
| Transmission range |
286- 2500 nm |
| Absorption Coefficient |
<0.1%cm at 1064nm |
| Physical Axis |
X・b, (Z,a)=31.6°,(Y,c)=47.2° |
| SHG of 1064/532 |
Phase matching angle: 168.9°from Z axis in YZ plane
Deff: 3.0 +/- 0.1pm/V
Angular acceptance: 2.32 mrad.cm
Walk-off angle: 25.6mrad
Temperature acceptance: 21.7℃.cm |
| Sellmeier coefficients |
n2i(λ) = A + B/(λ2-C) -Dλ2 |
|
A |
B |
C |
D |
| n1 |
3.6545(4) |
0.0511(2) |
0.0371(3) |
0.0226(1) |
| n2 |
3.0740(3) |
0.0323(1) |
0.0316(3) |
0.01337(6) |
| n3 |
3.1685(3) |
0.0373(1) |
0.0346(3) |
0.01750(8) |
【保証仕様】 ・サイズ交差:
(W+/-0.1mm) x (H+/-0.1mm) x (L+0.5/-0.1mm) (L >/= 2.5mm)
(W+/-0.1mm) x (H+/-0.1mm) x (L+0.1/-0.1mm) (L < 2.5mm)
・有効径: 径の中心90%
・平面度: < λ/8 @ 633nm ・平行度: better than 20arc seconds
・透過波面ひずみ: < λ/8 @ 633nm ・Chamfer: </= 0.2mm @ 45°
・Chip: </= 0.1mm
・スクラッチ/ディグ: better than 10/5 to MIL-O-13830A ・垂直度: </= 5 arc seconds
・角度交差: Δθ</= 0.25°、Δφ</= 0.25°
・損傷閾値: [GW/cm]: >0.3 for 1064nm、TEM00、10ns、10Hz |
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