Angular frequency $$\omega = 2\pi c k \Longrightarrow \omega[\mathrm{fs^{-1}}] \approx \frac{k[\mathrm{cm^{-1}}]}{5308.837}$$ | Products Reflectance at wavelengths from 200 nm to 2000 nm may be calculated. $$, Lateral shift of optical axis after passing through a slab of thickness $$h$$, refractive index $$n=n(\lambda)$$ at angle of indicence $$\vartheta_0$$, The Fresnel equations describe what fraction of the light is reflected and what fraction is refracted (i.e., transmitted). Frequency$$ f = \frac{1}{T} \Longrightarrow f[\mathrm{THz}] = \frac{10^3}{T[\mathrm{fs}]} $$, Wavelength$$ \lambda = \frac{2\pi c}{\omega} \Longrightarrow \lambda[\mathrm{nm}] \approx \frac{1883.652}{\omega[\mathrm{fs^{-1}}]} $$For temporally Gaussian pulse, peak intensity is related to peak fluence as$$I_0 =\frac{2F_{0}}{\Delta t}\sqrt{\frac{\ln2}{\pi}}\approx\frac{0.94F_0}{\Delta t}. Home Products Resources Calculations Calculations: Fresnel Clearance Zone. Here $$\Delta t$$ is pulse length (FWHM). Pulse energy $$\mathcal{E}$$ is equal to the integrated fluence $$F$$, For temporally sech² pulse, peak power is related to pulse energy $$\mathcal{E}$$ and length $$\Delta t$$ (FWHM) as $$. Angular frequency$$ \omega = 2\pi f \Longrightarrow \omega[\mathrm{cm^{-1}}] \approx \frac{f[\mathrm{THz}]}{159.160} $$The Fresnel equations describe what fraction of the light is reflected and what fraction is refracted (i.e., transmitted). Angular frequency$$ \omega = \frac{E}{\hbar} \Longrightarrow \omega \approx 1.519\cdot E[\mathrm{eV}]  \$('#content .addFormula').click(function(evt) { You may need to use a topographic map, draw the line between the end points, and create an accurate terrain profile. Maximal pulse intensity (at beam center). The incident light is assumed to be a plane wave, and effects of edges are neglected.The light is said to be s-polarized when the incident light is polarized with its electric field perpendicular to the plane containing the incident, reflected, and refracted rays.The light is said to be s-polarized, when the incident light is polarized with its electric field parallel to the plane containing the incident, reflected, and refracted rays.The fraction of the incident power that is reflected from the interface is given by the reflectance or reflectivity R. You must activate Javascript to use this site. They also describe the phase shift of the reflected light. the ratio of the refractive indices of the two media. This page contains a calculator to work out the effects of reflection when light moves through parallel interfaces between materials of different refractive indices. window.jQuery || document.write('