Shalom

Refractive Index

Wavelength (μm)

no

ne

Wavelength (μm)

no

ne

Wavelength (μm)

no

0.1850

1.65751

1.68988

0.9914

1.53514

1.54392

2.3000 μm

1.51561

0.1980

1.65087

1.66394

1.1592

1.53283

1.54152

2.6000 μm

1.50986

0.2310

1.61395

1.62555

1.3070

1.53090

1.53951

3.0000 μm

1.49953

0.3400

1.56747

1.57737

1.3958

1.52977

1.53832

3.5000 μm

1.48451

0.3940

1.55846

1.56805

1.4792

1.52865

1.53716

4.0000 μm

1.46617

0.4340

1.55396

1.56339

1.5414

1.52781

1.53630

4.2000 μm

1.45690

0.5080

1.54822

1.55746

1.6815

1.52583

1.53422

5.0000 μm

1.41700

0.5893

1.54424

1.55335

1.7614

1.52468

1.52468

6.4500 μm

1.27400

0.7680

1.53903

1.54794

1.9457

1.52184

1.53004

7.0000 μm

1.16700

0.8325

1.53773

1.54661

2.0531

1.52005

1.52823

Specification

Material

Quartz Crystal

Wavelength

150~4000nm

Size

0.1mm-100mm

Surface Quality

10/5 S/D

Optical Axis Orientation

<6 arc min

Parallelism

<1 arc sec

Flatness

λ/10 @ 633nm

Clear Aperture         

＞95% of full aperture

Coating

Upon Customer’s Specification  

Basic Properties

Crystal Class

Hexagonal

Molecular Weight

60.06

Density

2.635-2.660 g/cm³ @ 289 K

Dielectric Constant

for 3x107 Hz @295 K

Parallel

Perpendicular

35 microns

4.27

4.34

Reflection Loss

8.2 % for two surfaces @ 2 mm

Melting Temperature

1740 K

Specific Heat

0.17 cal/(g K)@ 273 K

Knoop Hardness

741 kg/mm²

Transmission Range

0.4 - 4.5 μm

Debye Temperature

470 K

Thermal Conductivity

Parallel/Perpendicular

Parallel/Perpendicular

Parallel/Perpendicular

720/370 W/(m K) @20K

20/10W/(m K) @194K

10.7/6.2W/(m K) @323K

Thermal Expansion

Parallel

Perpendicular

Bulk Modulus

Shear Modulus

97.2 GPa

76.5 GPa

36.4 GPa

31.14 GPa

Solubility in Water

None

Bandgap

8.4