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Results tagged with diffraction
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user 314631
Diffraction is defined as the bending or flaring of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle. This flaring is consistent with the spreading of wavelets in the Huygens construction. Diffraction occurs for waves of all types, not just light.
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Beam spot size for a laser beam from space
For example, given the radius of aperture of the transmitting telescope ($0.1$ m) and the wavelength ($1550$ nm), how do I calculate the diffraction at a distance of $40,000$ km ? …
- 210
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How to calculate losses due to diffraction?
The power recieved is equal to
\begin{equation}
1-e^{-2 a_R^2 / w_d^2},
\end{equation}
The diffraction induced transmittivity is given by the fraction of the output and input powers,
\begin{equation} … \end{equation}
Although simplified, is this the right approach to calculate the
losses due to diffraction induced beam broadening?
Realistically lasers dont produce perfect gaussian beams. …
- 210