CASIX has strong capability in fabricating optical components with various optical materials. The most important material properties to consider for an optical element are transmission versus wavelength, index of refraction, thermal characteristics, mechanical and chemical characteristics and cost.
There are two instances in which you might need to know more about optical materials. First, you may need to determine the performance of a catalog component in a particular application. Second, you may need specific information when selecting the material for a custom component. The data in the following is intended to assist in these situations.
To select the right materials seems overwhelming. The simplest way is to let CASIX know your applications, and we select them for you.
กกThe materials that CASIX has ever used include:
| General optical glass: | Schott glass, Ohara glass |
| Special glass: | Fused Silica, Dynasil fused silica, color glass, float glass, Zerodur... |
| Optical crystal: | Sapphire, CaF2, BaF2,
MgF2, LiF, KBr, KCl, NaCl, MgO... Quartz, Silicon, Ge, ZnSe, ZnS, GaAs... Calcite, YVO4, LiNbO3, BBO, TeO2, LBO, KTP, YAG... |
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| Materials | Refractive Index |
Transmission Range(mm) |
Thermal Expansion Coefficient (10-6/K) |
| BK7 | 1.5164 (588 nm) |
0.330 - 2.1 |
7.5 |
| SF11 | 1.78472(588nm) |
0.370 - 2.5 |
6.8 |
| SF14 | 1.76182(588 nm) |
0.420 - 2.0 |
8.1 |
| Fused Silica | 1.4858 (308 nm) |
0.185 - 2.5 |
0.54 |
| CaF2 | 1.399 (5.0 mm) |
0.170 - 7.8 |
18.85 |
| Sapphire | 1.755 (1.0 mm) |
0.180 - 4.5 |
8.4 |
| Silicon | 3.4179 (10 mm) |
1.200 - 7.0 |
4.15 |
| Ge | 4.003 (10 mm) |
1.900 - 16 |
6.1 |
| ZnSe | 2.40 (10 mm) |
0.630 - 18 |
7.8 |
| ZnS | 2.2 (10 mm) |
0.380 - 14 |
6.5 |
| LiF | 1.39 (500 nm) |
0.150 - 5.2 |
37 |
| KBr | 1.526 (10 mm) |
0.280 - 22 |
43 |
| MgF2 | no=1.3836 ne=1.3957 (405nm) |
0.130 - 7.0 |
a:13.7 b: 8.48 |
| YVO4 | no=1.9500 ne=2.1554 (1.3 mm) |
0.400 - 5.0 |
a:4.46 b:11.37 |
| CaCO3(Calcite) | no=1.6557 ne=1.4852 (633 nm) |
0.210 - 2.3 |
a:24.39 b:5.68 |
| Quartz | no=1.5427 ne=1.5518 (633 nm) |
0.200 - 2.3 |
7.07 |
| a-BBO | no=1.6749 ne=15555 (532 nm) |
0.190 - 3.5 |
a:4.0 c: 36 |
| LiNbO3 | no=2.2863 ne=2.2027 (633 nm) |
0.370 - 4.5 |
a:16.7 c: 2.0 |
Copyright 1998 CASIX, Inc. All rights reserved.
Last Revised: Jan 27, 1999
Web Page maintained by : Contact@CASIX.com
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