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Optical constants of Si (Crystalline silicon)

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Optical constants of Si (Crystalline silicon)
Option:
Wavelength: µm  (1.36~11)
Refractive index

Refractive index - Wikipedia

n = 3.42009

Chromatic dispersion

Dispersion (optics) - Wikipedia

dn/dλ = -0.00121 µm-1

[ Figure: Refractive index of Si (Crystalline silicon) ]
Dispersion formula

Sellmeier equation - Wikipedia

$$ n^2 - 1 = \frac{10.6684293 λ^2}{λ^2-0.301516485^2} + \frac{0.003043475 λ^2}{λ^2-1.13475115^2} + \frac{1.54133408 λ^2}{λ^2-1104.0^2} $$

C

n = sqrt( 1 + 10.6684293*pow(x,2)/(pow(x,2)-pow(0.301516485,2)) + 0.003043475*pow(x,2)/(pow(x,2)-pow(1.13475115,2)) + 1.54133408*pow(x,2)/(pow(x,2)-pow(1104.0,2)) )

Fortran

n = SQRT( 1 + 10.6684293*x**2/(x**2-0.301516485**2) + 0.003043475*x**2/(x**2-1.13475115**2) + 1.54133408*x**2/(x**2-1104.0**2) )

Visual Basic

n = SQRT( 1 + 10.6684293*x**2/(x**2-0.301516485**2) + 0.003043475*x**2/(x**2-1.13475115**2) + 1.54133408*x**2/(x**2-1104.0**2) )

Expressions for n

Conditions

Room temperature

References

- Handbook of Optics, 3rd edition, Vol. 4. McGraw-Hill 2009 [link]

Reflection calculator
Angle of incidence (0~90°): 
Direction: in out
Reflectance (at 6.18 µm)

Fresnel equations - Wikipedia

RS = ... (S-polarized)
RP = ... (P-polarized)
R = ... (non-polarized, (RS+RP)/2 )

Reflection phase

ɸ = ...°
ɸS = ...°
ɸP = ...°

Brewster's angle

Brewster's angle - Wikipedia

θB = ...°

Critical angle

Total internal reflection - Wikipedia

θC = ...°

More info ( wiki )

Silicon, Si

Other names for Polysilicon

Polycrystalline silicon; semicrystalline silicon; or simply poly in context

External links

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