|
透光范围 |
420-5200nm |
120-8500nm |
200-2300nm |
|
晶体结构 |
Trigonal,SpaceGroup R3c |
Trigonal,SpaceGroup R3c |
Trigonal,SpaceGroup R3c |
|
晶系 |
Positive Uniaxial |
Positive Uniaxial |
Negative Uniaxial |
|
含晶细胞 |
a=b=0.515 Å,c=13.863 Å |
a=b=4.621 Å,c=3.053 Å |
|
|
密度 |
4.64g/cm3 |
3.18g/cm3 |
2.65g/cm3 |
|
潮解性 |
Low |
Low |
Low |
|
莫氏硬度 |
5
|
6 |
7 |
|
热膨胀系数 |
Aa=2.0*10﹣6/k@25℃ Ac=2.2*10﹣6/k@25℃
|
Aa=6.23-9.25*10﹣6/k Ac=10.86-14.54*10﹣6/k |
Aa=6.2*10﹣6/k Ac=10.7*10﹣6/k |
|
光学均匀性 |
5*10﹣5/cm |
10﹣6/cm |
10﹣6/cm |
|
吸收系数 |
0.1%/cm﹣1@1064nm |
0.07at 0.2um;0.02 at 5.0um 0.02@500nm |
0.1%/cm﹣1@1064nm |
|
在45°时屈光指数，双折射，离散角（ρ） |
Ne=2.20263,No=2.28629 △ n=0.08366 ρ=2.135°@633nm |
Ne=1.38876,No=1.37698 △ n=0.01178 ρ=0.488°@633nm |
Ne=1.55170,No=1.54265 △ n=0.00905 ρ=0.335°@532nm |
特性
|
直径 |
Max.30-40mm |
Max.50mm |
Max.100mm |
|
长度 |
Max.25-35mm |
Max.100mm |
Max.100mm |
|
光洁度 |
Better than 20/10 Scratch/Dig Per MIL-0-13830A |
||
|
光束偏离 |
<10arc seconds |
||
|
光轴方向 |
+/-0.2° |
||
|
面形 |
<λ/8@633nm |
||
|
透过波前畸变 |
<λ/4@633nm |
||
|
镀膜 |
Upon Specification |
||
