材料成分

>99.99%，High Purity� Mono-crystalline Al2O3 (KY)

晶向类型C-M

C-axis (0001) off-cut 0.5°~10° ± 0.1° toward M (1-100)

晶向类型C-A

C-axis (0001) off-cut 0.5°~8° ± 0.1° toward A (11-20)

晶向类型A-M

A-axis (11-20) off-cut 0.5°~6° ± 0.1° toward M (1-100)

晶向类型A-C

A-axis (11-20) off-cut 0.5°~6° ± 0.1° toward C (0001)

晶向类型R-M

R-axis (1-102) off-cut 0.5°~6° ± 0.1° toward M (1-100)

晶向类型R-C

R-axis (1-102) off-cut 0.5°~6° ± 0.1° toward C (0001)

晶向类型M-C

M-axis (1-100) off-cut 0.5°~6° ± 0.1° toward C (0001)

直径

50.8mm

100mm

150mm

厚度

430um

650um

1000um

定位边晶吐�/p>

A-plane ± 0.3°

定位边长�?/p>

16mm

30mm

47.5mm

正面状�?/p>

Epi-polished,Ra<0.3nm

反面状�?/p>

SSP:Fine-ground,Ra=0.8-1.2um; DSP:Epi-polished,Ra<0.3nm

总厚度偏差TTV

<10 um

<20 um

<25 um

弯曲度BOW

-15�? um

-25�? um

-35�? um

翘曲度WARP

<15 um

<30 um

<40 um

边缘去除

�? mm

晶体结构

六方晶体

禁带宽度(eV)

/

熔点（℃（�/p>

2040ℂ�/p>

莫氏硬度(mohs)

9

热导�?W·cm^-1·ℂ�sup>-1)

0.46W·cm^-1·ℂ�sup>-1

热膨胀系数(ℂ�sup>-1)

6.7*10-6 // C-axis
5.0*10-6 ⊥C-axis

晶格常数(nm)

a=4.76Å c=12.99Å

折射玆�/p>

1.762~1.777

透过玆�/p>

测试样品：蓝宝石：直�?6.2毫米×厚度4毫米
紫外线：波长200�?80纳米，透过�?4%�?4%
可见光：波长380�?60纳米，透过�?5%
红外线：波长760�?000纳米，透过�?5%
远红外线：波长大�?000纳米，透过�?0%�?00%