蓝宝石（Al₂O₃）棱镛�/span>

蓝宝石因其极度的韧性和强度可以很好的应用为UV＋�/span>VIS咋�/span>NIR光谱波段的光学窗片材料、�/span>

蓝宝石具有多种生长方式、�/span> Verneuil咋�/span>Czochralski方法通常用于标准级蓝宝石材料。更高质量的蓝宝石，应用于电子基板。它是由Kyropulos生长制造，可以得到非常高的纯度，产品具有优良的紫外透射特性。在IR中的使用范围被限制在�?/span>5��m，并且在任何光学级别中遇到很少的困难� 它在紫外线范围内，必须注意观察，因为仍�/span>140nm�?/span>240nm的透射对杂质和间隙空位非常敏感。大片蓝宝石可以通过色带生长制成� 蓝宝石具有轻微的双折射性，通常皃�/span>IR窗口通常以随机的方式从晶体切割，也有对于双折射的特定应用，选择取向� 通常这是光轴与表面平面成90度，称为“零度”材料� 合成光学蓝宝石没有着色、�/span>

*请注意，所有制造商似乎对热膨胀的实际数字不统一�?/span>

详细参数９�/span>

传输范围９�/span> 0.17~5.5��m

折射率：No 1.75449; Ne 1.74663＇�/span>1.06��m）（1（�/span>

反射损耗：14�at 1.06��m

吸收系数９�/span> 0.3��10 -3 cm^-1at 2.4��m＇�/span>2（�/span>

吸收峰：13.5��m

dn / dT�13.4��10^-6＇�/span>0.546��m）（3（�/span>

dn /d��= 0�1.5��m

密度９�/span> 3.97g/cm³

熔点９�/span> 2040ℂ�/span>

热导率：27.21W m^-1K^-1at 300K

热膨胀９�/span> 5.6＇�/span>para（�/span>& 5.0＇�/span>perp�?#215;10^-6/ K *

硬度９�/span> Knoop 2000 with 2000g indenter

比热容量９�/span> 763JKg^-1K^-1＇�/span>293K）（4（�/span>

介电常数９�/span> 11.5＇�/span>para（�/span>9.4＇�/span>perp（�/span>at 1MHz

杨氏模量＇�/span>E）：335GPa

剪切模量＇�/span>G）：148.1GPa

体积模量＇�/span>K）：240GPa

弹性系数：C11 = 496 C12 = 164 C13 = 115 C33 = 498 C44 = 148

表观弹性极限：300 MPa＇�/span>45�?00 psi（�/span>

泊松比：0.25

溶解度：98��10-6g / 100g water

分子量：101.96

籺�/span>/结构�Trigonal＇�/span>hex），R3c

折射率：

No = Ordinary Ray Ne = Extraordinary Ray

��m	No	Ne	��m	No	Ne	��m	No	Ne
0.193	1.9288	1.9174	0.213	1.8890	1.8784	0.222	1.8754	1.8650
0.226	1.8702	1.8599	0.244	1.8506	1.8407	0.248	1.8470	1.8372
0.257	1.8393	1.8297	0.266	1.8330	1.8236	0.280	1.8244	1.8151
0.308	1.8110	1.8020	0.325	1.8047	1.7958	0.337	1.8001	1.7921
0.351	1.7969	1.7882	0.355	1.7960	1.7883	0.442	1.7804	1.7721
0.458	1.7784	1.7702	0.488	1.7753	1.7671	0.515	1.7730	1.7649
0.532	1.7717	1.7636	0.590	1.7680	1.7600	0.633	1.7659	1.7579
0.670	1.7643	1.7563	0.694	1.7634	1.7554	0.755	1.7614	1.7535
0.780	1.7607	1.7527	0.800	1.7601	1.7522	0.820	1.7596	1.7517
0.980	1.7561	1.7482	1.064	1.7545	1.7466	1.320	1.7501	1.7423
1.550	1.7462	1.7384	2.010	1.7375	1.7297	2.249	1.7323	1.7243
2.703	1.719	1.711	2.941	1.712	1.711	3.333	1.701	1.693
3.704	1.687	1.679	4.000	1.674	1.666	4.348	1.658	1.65
4.762	1.636	1.628	5.000	1.623	1.615	5.263	1.607	1.599

订购信息９�/span>

产品型号: SAPPRISM10-60

IR Polished Sapphire (Al₂O₃) 60�� prism

10 x 10 x 10mm 60�� equiliateral dispersing prism.

A=B=C=H=10mm

Optic axis random direction.

产品型号: SAPPRISM10-60Z

IR Polished Sapphire (Al2O3) 60�� prism

10 x 10 x 10mm 60�� equiliateral dispersing prism.

A=B=C=H=10mm

Optic axis perpendicular to triangular faces

关于晶体切割９�/span>

Sapphire is slightly birefringent and so for critical optical or mechanical applications� the windows shouldbe specified as 'zero degree'� or 'c-cut'� meaning that the optical axis of the material should be perpendicular to the plane of thewindow. If unspecified� the component will be of 'random' cut� but its worth noting that this is nearly always 60��to the opticaxis as this is the 'softest' direction for the saw. Note that all sapphire is always single crystal� sub-grains are always avoided inthe cut.

C-plane (0�?�?�?) = Z-cut

A-plane (1�?�?2�?) = Y-cut

M-Plane (1�?�?1�?) = X-cut R-Plane (1�?�?1�?)

Manufacturers seem unable to agree on the thermal expansion coefficient of sapphire＋�/span>figures from 5.6 to 8.4 x 10-6K are given. While there may be some variation due to themethod of growth� and certainly due to the axis of cut� this variation is inexplicable.