中红外CaF2红外分光镜50%/50%（1-5um）,尺寸：38mm dia x 3mm

直径偏差

+0/-0.005" (+0/-0.13 mm)

厚度偏差

± 0.005" (± 0.13 mm)

通光孔径

85%

平行度

3 arc min

平坦度

2 waves at 633 nm

表面质量

60/40

镀膜参数

50/50 ± 10% R/T for 1.5-5 μm

镀膜编号

BSMP-50-CAF2-1.5-5.0(参考下面曲线）

透射波长范围:

0.13 to 10 μm (Note: IR grade will have restricted performance outside IR range)

0.12 to 7 μm (1)

0.6 to 21.0 μm

0.85 to > 20 micron (1)(3)

折射率:

1.39908 at 5 μm (1) (2)

No 1.413 at 0.22 μm (4)

2.4028 at 10.6 μm

2.653 @ 10 microns (1)

反射损耗 :

5.4% at 5 μm

5.7% at 0.22 μm (2 surfaces)

29.1% at 10.6 μm (2 surfaces)

32% @ 10 microns

吸收系数 :

7.8 x 10-4 cm-1 @ 2.7 μm

40 x 10-3 cm-1 at 2.7 μm

0.0005 cm-1 at 10.6 μm

n/a

Reststrahlen Peak :

35 μm

20 μm (1)

45.7 μm

n/a

dn/dT :

-10.6 x 10-6/°C (3)

2.3 (para) 1.7 (perp) at 0.4 μm (1)

+61 x 10-6/°C at 10.6 μm at 298K

5.0 x 10-5 K-1

dn/dμ = 0 :

1.7 μm

1.4 μm

5.5 μm

n/a

密度：

3.18 g/cc

3.18g/cc

5.27 g/cc

6.2 g cm-3 (2)

熔点：

1360°C

1255°C

1525°C (see notes below)

1092 °C

热导率：

9.71 W m-1 K-1 (4)

21 (para) 33.6 (perp) W m-1 K-1 at 300K (3)

18 W m-1 K-1 at 298K

6.2 W.m-1.K-1 at 293 K

热膨胀：

18.85 x 10-6/°C (5)(6)

13.7 (para) 8.9 (perp) x 10-6 /K (1)

7.1 x 10-6 /°C at 273K

5.9x10-6 K-1 at 293 K

硬度：

Knoop 158.3 (100) with 500g indenter

Knoop 415

Knoop 120 with 50g indenter

Knoop 45 (3)

比热容：

854 J Kg-1 K-1

1003 J Kg m-1 K-1

339 J Kg-1 K-1

210 J.kg-1.K-1 at 293 K

介电常数 :

6.76 at 1MHz (7)

4.87 (para) 5.45 (perp) at 1MHz (1)

n/a

11 @ 1MHz

Youngs Modulus (E) :

75.8 GPa (7)

138 GPa (2)

67.2 GPa

36.52 GPa

剪切模量 (G) :

33.77 GPa (7)

54.66GPa (2)

n/a

n/a

体积弹性模量 (K) :

82.71 GPa (7)

101.32 GPa (2)

40 GPa

25 GPa

弹性系数 :

C11 = 164 C12 = 53 C44 = 33.7 (7)

C11=140 C12=89 C44=57 C13=63 C66=96 (2)

Not Available

C11=53.51; C12=36.81; C44=19.94

表观弹性极限 :

36.54 MPa

49.6 MPa (7200 psi)

55.1 MPa (8000 psi)

5.9 MPa (3)

泊松比 :

0.26

0.276 (2)

0.28

0.41

溶解度 :

0.0017g/100g water at 20°C

0.0002g/100g water

0.001g/100g water

Insoluble in water

分子量 :

78.08

62.32

144.33

240.02

类别/结构 :

Cubic Fm3m (#225) Fluorite Structure. Cleaves on (111)

Tetragonal P42/mnm (#136) Rutile Structure. Can cleave on c-axis but

not easily.

FCC Cubic, F43m (#216), Zinc Blende structure. (Polycrystalline)

Cubic ZnS (110) cleavage

µm

No

µm

No

µm

No

0.149

1.5800

0.161

1.5490

0.195

1.5000

0.200

1.4950

0.222

1.4800

0.248

1.4680

0.266

1.4621

0.280

1.4584

0.300

1.454

0.337

1.4481

0.400

1.4419

0.486

1.4370

0.588

1.4339

0.656

1.4325

0.687

1.4320

0.728

1.4314

0.884

1.4298

1.014

1.4288

1.100

1.4283

1.250

1.4275

1.650

1.4256

1.900

1.4244

2.058

1.4236

2.450

1.4214

2.700

1.4199

2.800

1.4192

3.050

1.4175

3.400

1.4149

4.000

1.4096

4.400

1.4057

4.800

1.4014

5.000

1.3991

5.304

1.3952

5.893

1.3871

6.483

1.3782

7.072

1.3681

7.661

1.357

8.251

1.3444

8.840

1.3308

9.429

1.3161