透射波段范围: | 0.15~12μm(注意:IR级可能在UV下的性能受限) |
折射率 | 1.45(5μm)(1) |
反射损耗: | 6.5% at 5%(2个表面) |
吸收系数: | 3.2×10-4cm-1 @6μm |
吸收峰: | 47μm |
dn / dT: | -15.2×10-6 /℃(2) |
dn /dμ= 0: | 1.95μm |
密度: | 4.89g / cc |
熔点: | 1386℃ |
导热率: | 11.72W m-1 K-1 @ 286K |
热膨胀: | 18.1×10-6 /℃@273K |
硬度: | Knoop 82 with 500g indenter(4) |
比热容量: | 410JKg-1K-1(3) |
介电常数: | 7.33 at 1MHz |
杨氏模量(E) | 53.07GPa(3) |
剪切模量(G) | 25.4GPa(3) |
体积模量(K) | 56.4GPa |
弹性系数: | C11 = 89.2 C12 = 40.0 C44 = 25.4(2) |
表观弹性极限: | 26.9MPa(300psi)(4) |
泊松比: | 0.343 |
溶解性: | 0.17g / 100g water,23℃ |
分子量: | 175.36 |
类型/结构 | 立方CaF2,Fm3m,(111)裂解 |
(1) Handbook Optical Constants, ed Palik, V3, ISBN 0-12-544423-0
(2) I.H.Malitson; J.Opt.Soc.Am. Vol52, p1377, 1962
(3) D.Girlich; Elastic Constants of BaF2; Phys.Rev. Vol135, p1826, 1964
(4) S.Ballard et al; J.Opt.Soc.Am. Vol42, p684, 1952
(5) US patent. Chemical polish. 4,040,896 1977
(6) M.Laval et al; Nu. Insts.Meth, V206 p169, 1983