Example

A sample calculation is shown below in which user input has been colored in red for clarity. Program FILM is used to calculate the effect of varying the thickness of an SiO2 layer on top of a Si substrate. For normal incidence, a thickness of 130 nm reduces the reflectance of the entire stack to <8%. The built-in table for refractive indices of SiO2 and Si at 780 nm are used.

Calculation menu
1. Enter new stack parameters
2. Store stack parameters
3. Retrieve stack parameters
4. Modify film stack
5. Display stack parameters
6. Calculate for stack parameters only
7. Calculate for range of angles
8. Calculate for range of layer thicknesses
9. Calculate for range of wavelengths
10. Calculate field amplitudes & Poynting vector
11. Search
12. Stored material refractive indices vs. wavelength
13. Select output parameters
14. Exit

> 1

Wavelength (nm): 780

Polar angle (deg): 0
Azimuthal angle : 0

Design a specialty film stack with many layers? [N]

# thin film layers (<= 500): 1

Material list:
1. Other
2. Aluminum_Lorentz_Drude
3. Aluminum_table
4. Beryllium_Lorentz_Drude
5. Chromium_Lorentz_Drude
6. Cobalt_Lorentz_Drude
7. Cobalt_table
8. Copper_Lorentz_Drude
9. Copper_table
10. Gold_Lorentz_Drude
11. Gold_table
12. Iron_table
13. Nickel_Lorentz_Drude
14. Palladium_Lorentz_Drude
15. Platinum_Lorentz_Drude
16. Silicon_table
17. Silver_Lorentz_Drude
18. Silver_table
19. SiN
20. SiO
21. SiO2
22. Titanium_Lorentz_Drude
23. Tungsten_Lorentz_Drude

Select incident medium # from list: 1

Index of incident medium: 1

Select layer 1 material # from list: 21
File name = SiO2.ri.dat
Table glass
Thickness (nm) = 200

Select transmitting medium # from list: 16
File name = Silicon_table.ri.dat
Table silicon

Stack parameters:
Wavelength =    780.000 nm.
Angle of incidence:
Polar =    0.000 deg.
Azimuthal =    0.000 deg.

Layer    n K    t Material
0 1.00000 0.00000 manually entered
1 1.45380 0.00000 200.0000 nm SiO2
2 3.70932 0.00748 Silicon_table

Calculation menu
1. Enter new stack parameters
2. Store stack parameters
3. Retrieve stack parameters
4. Modify film stack
5. Display stack parameters
6. Calculate for stack parameters only
7. Calculate for range of angles
8. Calculate for range of layer thicknesses
9. Calculate for range of wavelengths
10. Calculate field amplitudes & Poynting vector
11. Search
12. Stored material refractive indices vs. wavelength
13. Select output parameters
14. Exit

> 8

New algorithm employed.

Stack parameters:
Wavelength =    780.000 nm.
Angle of incidence:
Polar =    0.000 deg.
Azimuthal =    0.000 deg.

Layer    n K t Material
0 1.00000 0.00000    manually entered
1 1.45380 0.00000    200.0000 nm SiO2
2 3.70932 0.00748    Silicon_table

Enter initial thickness (nm): 0
Enter final thickness (nm): 600
Enter increment of thickness: 10

   Thickness    Rp Rs    Tp Ts    Rp+Tp    Rs+Ts
   0.000    0.33098    0.33098 0.66902    0.66902 1.00000    1.00000
10.000    0.32841    0.32841 0.67159    0.67159 1.00000    1.00000
20.000    0.32078    0.32078 0.67922    0.67922 1.00000    1.00000
30.000    0.30820    0.30820 0.69180    0.69180 1.00000    1.00000
40.000    0.29084    0.29084 0.70916    0.70916 1.00000    1.00000
50.000    0.26905    0.26905 0.73095    0.73095 1.00000    1.00000
60.000    0.24337    0.24337 0.75663    0.75663 1.00000    1.00000
70.000    0.21469    0.21469 0.78531    0.78531 1.00000    1.00000
80.000    0.18428    0.18428 0.81572    0.81572 1.00000    1.00000
90.000    0.15386    0.15386 0.84614    0.84614 1.00000    1.00000
   100.000    0.12553    0.12553 0.87447    0.87447 1.00000    1.00000
   110.000    0.10165    0.10165 0.89835    0.89835 1.00000    1.00000
   120.000    0.08450    0.08450 0.91550    0.91550 1.00000    1.00000
   130.000    0.07590    0.07590 0.92410    0.92410 1.00000    1.00000
   140.000    0.07682    0.07682 0.92318    0.92318 1.00000    1.00000
   150.000    0.08715    0.08715 0.91285    0.91285 1.00000    1.00000
   160.000    0.10573    0.10573 0.89427    0.89427 1.00000    1.00000
   170.000    0.13064    0.13064 0.86936    0.86936 1.00000    1.00000
   180.000    0.15954    0.15954 0.84046    0.84046 1.00000    1.00000
   190.000    0.19011    0.19011 0.80989    0.80989 1.00000    1.00000
   200.000    0.22031    0.22031 0.77969    0.77969 1.00000    1.00000
   210.000    0.24850    0.24850 0.75150    0.75150 1.00000    1.00000
   220.000    0.27350    0.27350 0.72650    0.72650 1.00000    1.00000
   230.000    0.29449    0.29449 0.70551    0.70551 1.00000    1.00000
   240.000    0.31096    0.31096 0.68904    0.68904 1.00000    1.00000
   250.000    0.32261    0.32261 0.67739    0.67739 1.00000    1.00000
   260.000    0.32928    0.32928 0.67072    0.67072 1.00000    1.00000
   270.000    0.33090    0.33090 0.66910    0.66910 1.00000    1.00000
   280.000    0.32744    0.32744 0.67256    0.67256 1.00000    1.00000
   290.000    0.31895    0.31895 0.68105    0.68105 1.00000    1.00000
   300.000    0.30552    0.30552 0.69448    0.69448 1.00000    1.00000
   310.000    0.28736    0.28736 0.71264    0.71264 1.00000    1.00000
   320.000    0.26484    0.26484 0.73516    0.73516 1.00000    1.00000
   330.000    0.23857    0.23857 0.76143    0.76143 1.00000    1.00000
   340.000    0.20949    0.20949 0.79051    0.79051 1.00000    1.00000
   350.000    0.17894    0.17894 0.82106    0.82106 1.00000    1.00000
   360.000    0.14872    0.14872 0.85128    0.85128 1.00000    1.00000
   370.000    0.12099    0.12099 0.87901    0.87901 1.00000    1.00000
   380.000    0.09813    0.09813 0.90187    0.90187 1.00000    1.00000
   390.000    0.08235    0.08235 0.91765    0.91765 1.00000    1.00000
   400.000    0.07537    0.07537 0.92463    0.92463 1.00000    1.00000
   410.000    0.07796    0.07796 0.92204    0.92204 1.00000    1.00000
   420.000    0.08983    0.08983 0.91017    0.91017 1.00000    1.00000
   430.000    0.10967    0.10967 0.89033    0.89033 1.00000    1.00000
   440.000    0.13544    0.13544 0.86456    0.86456 1.00000    1.00000
   450.000    0.16479    0.16479 0.83521    0.83521 1.00000    1.00000
   460.000    0.19544    0.19544 0.80456    0.80456 1.00000    1.00000
   470.000    0.22539    0.22539 0.77461    0.77461 1.00000    1.00000
   480.000    0.25310    0.25310 0.74690    0.74690 1.00000    1.00000
   490.000    0.27745    0.27745 0.72255    0.72255 1.00000    1.00000
   500.000    0.29769    0.29769 0.70231    0.70231 1.00000    1.00000
   510.000    0.31334    0.31334 0.68666    0.68666 1.00000    1.00000
   520.000    0.32413    0.32413 0.67587    0.67587 1.00000    1.00000
   530.000    0.32993    0.32993 0.67007    0.67007 1.00000    1.00000
   540.000    0.33066    0.33066 0.66934    0.66934 1.00000    1.00000
   550.000    0.32633    0.32633 0.67367    0.67367 1.00000    1.00000
   560.000    0.31696    0.31696 0.68304    0.68304 1.00000    1.00000
   570.000    0.30270    0.30270 0.69730    0.69730 1.00000    1.00000
   580.000    0.28375    0.28375 0.71625    0.71625 1.00000    1.00000
   590.000    0.26052    0.26052 0.73948    0.73948 1.00000    1.00000
   600.000    0.23369    0.23369 0.76631    0.76631 1.00000    1.00000

Calculation menu
1. Enter new stack parameters
2. Store stack parameters
3. Retrieve stack parameters
4. Modify film stack
5. Display stack parameters
6. Calculate for stack parameters only
7. Calculate for range of angles
8. Calculate for range of layer thicknesses
9. Calculate for range of wavelengths
10. Calculate field amplitudes & Poynting vector
11. Search
12. Stored material refractive indices vs. wavelength
13. Select output parameters
14. Exit

>