Silicon (Si)

Silicon (Si)

Il Silicon single crystal é un materiale chimico inerte molto duro con una ottima trasmissione nel range 1-7μm. L’ottima conduttività termica ed una bassa densità lo rendono leggero e quindi ideale per specchi laser ed ottiche nel range IR-FIR.

Specification
Transmission1µm -10µm and 30µm 300µm
MaterialSilicon (Si)
Density (gr/cm³)2.33
Dielectric constant13@10GHZ
Melting point (°C)1420
Coefficient of elasticityC₁₁=167 C₁₁=65 C₁₁=80
Thermal expansion coefficient (1/°C)4.15*10¯⁶
Thermal Conductivity (J/k.m.s.)163.3 @273k
Specific heat (J/g.k)0.733
Knoop hardness (Kg/mm²)1150
Young modulus (GPa)131
Shear modulus (GPa)79.9
Poisson ratio0.266
Bulk modulus (GPa)102
Bulk Absorption coefficient (l/cm)1.6*10¯³ @3000nm
Thermo-optical coefficient1.6*10¯⁴

Silicon prism (large size, wedge, ATR, heteromorphic, right angle…)

Technical parametersCommercial gradePrecision gradeHigh precision grade
Dimension range1-300mm2-300mm2-300mm
Dimension tolerance±0.1mm±0.025mm±0.01mm
Thickness tolerance±0.1mm±0.025mm±0.01mm
Angle tolerance±3'-5'±15"-30"±2"-5"
Surface quality60-4040-2020-10
Surface accuracy1.0λλ/10λ/20
Coating3-5µm T>97%
Bevelling0.1-0.5mmx45°
SubstrateOptical grade silicon (Si)

Silicon windows

Technical parameterCommercial gradePrecision gradeHigh precision grade
Dimension range1-600mm2-600mm2-600mm
Dimension tolerance±0.1mm±0.025mm±0.01mm
Thickness tolerance±0.1mm±0.025mm±0.01mm
Angle tolerance±3'±1'±5"
Surface quality60-4040-2020-10
Surface accuracy1.0λλ/10λ/20
CoatingAR 3-5µm
Bevelling0.1-0.5mmx45°
SubstrateOptical grade silicon (Si)