products
透光范圍 |
420-5200nm |
120-8500nm |
200-2300nm |
晶體結(jié)構(gòu) |
Trigonal,SpaceGroup R3c |
Trigonal,SpaceGroup R3c |
Trigonal,SpaceGroup R3c |
晶系 |
Positive Uniaxial |
Positive Uniaxial |
Negative Uniaxial |
含晶細(xì)胞 |
a=b=0.515 ?,c=13.863 ? |
a=b=4.621 ?,c=3.053 ? |
|
密度 |
4.64g/cm3 |
3.18g/cm3 |
2.65g/cm3 |
潮解性 |
Low |
Low |
Low |
莫氏硬度 |
5
|
6 |
7 |
熱膨脹系數(shù) |
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 |
光學(xué)均勻性 |
5*10﹣5/cm |
10﹣6/cm |
10﹣6/cm |
吸收系數(shù) |
0.1%/cm﹣1@1064nm |
0.07at 0.2um;0.02 at 5.0um 0.02@500nm |
0.1%/cm﹣1@1064nm |
在45°時屈光指數(shù),雙折射,離散角(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
直徑 |
Max.30-40mm |
Max.50mm |
Max.100mm |
長度 |
Max.25-35mm |
Max.100mm |
Max.100mm |
光潔度 |
Better than 20/10 Scratch/Dig Per MIL-0-13830A |
||
光束偏離 |
<10arc seconds |
||
光軸方向 |
+/-0.2° |
||
面形 |
<λ/8@633nm |
||
透過波前畸變 |
<λ/4@633nm |
||
鍍膜 |
Upon Specification |
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