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| author | kinitrupti | 2017-05-12 18:40:35 +0530 |
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| committer | kinitrupti | 2017-05-12 18:40:35 +0530 |
| commit | d36fc3b8f88cc3108ffff6151e376b619b9abb01 (patch) | |
| tree | 9806b0d68a708d2cfc4efc8ae3751423c56b7721 /backup/ENGINEERING_PHYSICS_by_M.ARUMUGAM_version_backup/4.LASERS_2.ipynb | |
| parent | 1b1bb67e9ea912be5c8591523c8b328766e3680f (diff) | |
| download | Python-Textbook-Companions-d36fc3b8f88cc3108ffff6151e376b619b9abb01.tar.gz Python-Textbook-Companions-d36fc3b8f88cc3108ffff6151e376b619b9abb01.tar.bz2 Python-Textbook-Companions-d36fc3b8f88cc3108ffff6151e376b619b9abb01.zip | |
Revised list of TBCs
Diffstat (limited to 'backup/ENGINEERING_PHYSICS_by_M.ARUMUGAM_version_backup/4.LASERS_2.ipynb')
| -rwxr-xr-x | backup/ENGINEERING_PHYSICS_by_M.ARUMUGAM_version_backup/4.LASERS_2.ipynb | 236 |
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diff --git a/backup/ENGINEERING_PHYSICS_by_M.ARUMUGAM_version_backup/4.LASERS_2.ipynb b/backup/ENGINEERING_PHYSICS_by_M.ARUMUGAM_version_backup/4.LASERS_2.ipynb new file mode 100755 index 00000000..823230a1 --- /dev/null +++ b/backup/ENGINEERING_PHYSICS_by_M.ARUMUGAM_version_backup/4.LASERS_2.ipynb @@ -0,0 +1,236 @@ +{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "# Chapter 4:LASERS "
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 4.1, Page number 4.32"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Divergence = 0.5 *10**-3 radian\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#variable declaration\n",
+ "r1 = 2; #in radians\n",
+ "r2 = 3; #in radians\n",
+ "d1 = 4; #Converting from mm to radians\n",
+ "d2 = 6; #Converting from mm to radians\n",
+ "\n",
+ "#calculations\n",
+ "D = (r2-r1)/(d2*10**3-d1*10**3) #Divergence\n",
+ "\n",
+ "#Result\n",
+ "print \"Divergence =\",round(D*10**3,3),\"*10**-3 radian\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 4.2, Page number 4.32"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Frequency (V) = 4.32 *10**14 Hz\n",
+ "Relative Population= 1.081 *10**30\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#variable declaration\n",
+ "C=3*10**8 #The speed of light\n",
+ "Lamda=6943 #Wavelength\n",
+ "T=300 #Temperature in Kelvin\n",
+ "h=6.626*10**-34 #Planck constant \n",
+ "k=1.38*10**-23 #Boltzmann's constant\n",
+ "\n",
+ "#Calculations\n",
+ "\n",
+ "V=(C)/(Lamda*10**-10) #Frequency\n",
+ "R=math.exp(h*V/(k*T)) #Relative population\n",
+ "\n",
+ "#Result\n",
+ "print \"Frequency (V) =\",round(V/10**14,2),\"*10**14 Hz\"\n",
+ "print \"Relative Population=\",round(R/10**30,3),\"*10**30\""
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 4.3, Page number 4.32"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ " Frequency= 4.74 *10**14 Hz\n",
+ "no.of photons emitted= 7.322 *10**15 photons/sec\n",
+ "Power density = 2.3 kWm**-2\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#variable declaration\n",
+ "C=3*10**8 #Velocity of light\n",
+ "W=632.8*10**-9 #wavelength\n",
+ "P=2.3\n",
+ "t=1\n",
+ "h=6.626*10**-34 #Planck constant \n",
+ "S=1*10**-6\n",
+ "\n",
+ "#Calculations\n",
+ "V=C/W #Frequency\n",
+ "n=((P*10**-3)*t)/(h*V) #no.of photons emitted\n",
+ "PD=P*10**-3/S #Power density\n",
+ "\n",
+ "#Result\n",
+ "print \"Frequency=\",round(V/10**14,2),\"*10**14 Hz\"\n",
+ "print \"no.of photons emitted=\",round(n/10**15,3),\"*10**15 photons/sec\"\n",
+ "print \"Power density =\",round(PD/1000,1),\"kWm**-2\"\n"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 4.4, Page number 4.33"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Wavelenght = 8628.0 Angstrom\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#variable declaration\n",
+ "h=6.626*10**-34 #Planck constant \n",
+ "C=3*10**8 #Velocity of light\n",
+ "E_g=1.44 #bandgap \n",
+ "\n",
+ "#calculations\n",
+ "lamda=(h*C)*10**10/(E_g*1.6*10**-19) #Wavelenght\n",
+ "\n",
+ "#Result\n",
+ "print \"Wavelenght =\",round(lamda),\"Angstrom\"\n"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "##Example 4.5, Page number 4.33"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 25,
+ "metadata": {
+ "collapsed": false
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Band gap = 0.8 eV\n"
+ ]
+ }
+ ],
+ "source": [
+ "import math\n",
+ "from __future__ import division\n",
+ "\n",
+ "#variable declaration\n",
+ "W=1.55 #wavelength\n",
+ "\n",
+ "#Calculations\n",
+ "E_g=(1.24)/W #Bandgap in eV \n",
+ "\n",
+ "#Result\n",
+ "print \"Band gap =\",E_g,\"eV\""
+ ]
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 2",
+ "language": "python",
+ "name": "python2"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 2
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython2",
+ "version": "2.7.9"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
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