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physical optics
transmission grating


dispersion of a transmission grating in the air observed in the back focal plane of a lens


Caution
Fill in all input cells.
Choose all parameters unit.
Diffraction order k and angles are algebric.
Angle positive way is counterclockwise according the round arrow in the bottom right of the scheme.

InputValueunit
i
d
lam
k
fi
OutputValueUnit
idto be calculated
dxto be calculated
dispersion of a transmission grating in the air observed in the back focal plane of a lens
i : angle of incidence d : grating pitch lam : wavelength k : diffraction order id : diffraction angle fi : effective focal length of the lens ( fi is positive as the lens is converging ) dx : dispersion ( shift of the diffracted spot in the focal plane for a wavelength variation of + 1 nm )

Note
This calculation page can not detect all unrealistic inputs.



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