File:Mplwp dispersion curves.svg

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Summary

Description
English: Plot of refractive index vs. wavelength of various glasses. For dispersion. The wavelengths in the gray-shaded portion correspond to the visible spectrum.
Русский: Зависимость показателя преломления от длины волны в диапазоне 0,3...1,6 мкм некоторых оптических стёкол
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Author Geek3
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    English .svg
Derivative works of this file:  Indice refraction dispersion verres flint crown.svg
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This plot was created with mplwp, the Matplotlib extension for Wikipedia plots.
Source code
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mplwp source code

The plot was generated with mplwp 1.7 
#!/usr/bin/python # -*- coding: utf8 -*-  import matplotlib.pyplot as plt import matplotlib as mpl import numpy as np from math import *  code_website = 'http://commons.wikimedia.org/wiki/User:Geek3/mplwp' try:     import mplwp except ImportError, er:     print 'ImportError:', er     print 'You need to download mplwp.py from', code_website     exit(1)  name = 'Mplwp_dispersion curves.svg' fig = mplwp.fig_standard(mpl) xlim = 0.3, 1.6; fig.gca().set_xlim(xlim) ylim = 1.4, 1.9; fig.gca().set_ylim(ylim) mplwp.set_bordersize(fig, 60.5, 26.5, 24.5, 48.5) plt.gca().axvspan(0.38, 0.78, alpha=0.5, color='#aaaaaa')  # functions: https://refractiveindex.info def n(l, coeff):     n21 = 0.     for a,b in coeff:         n21 += a * l**2 / (l**2 - b)     return sqrt(1. + max(0, n21))  # coefficients for the https://en.wikipedia.org/wiki/Sellmeier_equation LASF9 = ((2.00030, 0.01214), (0.29893, 0.05387), (1.80692, 156.53083)) SF10 = ((1.62154, 0.01222), (0.25629, 0.05957), (1.64448, 147.46879)) F2 = ((1.34533, 0.00998), (0.20907, 0.04705), (0.93736, 111.88676)) BaK4 = ((1.28835, 0.00780), (0.13282, 0.03156), (0.94540, 105.96588)) BK7 = ((1.18319, 0.00722), (0.08718, 0.02682), (1.03134, 101.70236)) FK51A = ((0.97125, 0.00472), (0.21690, 0.01536), (0.90465, 168.68133))  x = np.linspace(xlim[0], xlim[1], 5001) y = [n(xx, LASF9) for xx in x] plt.plot(x, y, color='#0000cc') plt.text(1.5, 1.84, 'Lanthanum dense flint LaSF9', ha='right')  y = [n(xx, SF10) for xx in x] plt.plot(x, y, color='#0000cc') plt.text(1.5, 1.71, 'Dense flint SF10', ha='right')  y = [n(xx, F2) for xx in x] plt.plot(x, y, color='#0000cc') plt.text(1.5, 1.608, 'Flint F2', ha='right')  y = [n(xx, BaK4) for xx in x] plt.plot(x, y, color='#0000cc') plt.text(1.5, 1.565, 'Barium crown BaK4', ha='right')  y = [n(xx, BK7) for xx in x] plt.plot(x, y, color='#0000cc') plt.text(1.5, 1.515, 'Borosilicate crown BK7', ha='right')  y = [n(xx, FK51A) for xx in x] plt.plot(x, y, color='#0000cc') plt.text(1.5, 1.45, 'Fluorite crown FK51A', ha='right')  plt.xlabel(r'wavelength $\lambda$ [$\mu m$]') plt.ylabel(r'refractive index n')  plt.savefig(name) mplwp.postprocess(name)

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current18:52, 21 January 2018Thumbnail for version as of 18:52, 21 January 2018600 × 400 (53 KB)Geek3unit µm fixed
23:13, 10 January 2018Thumbnail for version as of 23:13, 10 January 2018600 × 400 (52 KB)Geek3User created page with UploadWizard

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