Added(A)/Deleted(D) following books

 A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter10.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter11.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter12.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter13.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter14.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter2.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter3.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter4.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter5.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter6.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter7.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter8.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter9.ipynb
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/1.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/2.png
A  Fiber_Optics_and_Optoelectronics_by_R._P._Khare/screenshots/3.png
A  sample_notebooks/LalitKumar/Ch3.ipynb

1 files changed, 210 insertions, 0 deletions

diff --git a/Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter14.ipynb b/Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter14.ipynb
new file mode 100644
index 00000000..86ebfbec
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+++ b/Fiber_Optics_and_Optoelectronics_by_R._P._Khare/Chapter14.ipynb
@@ -0,0 +1,210 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter14 - Laser-based systems"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 14.1 : Page 351"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "part (a)\n",
+      "energy = 1.7 J cm**-2\n",
+      "part (b)\n",
+      "threshold energy = 113.9 J cm**-2\n"
+     ]
+    }
+   ],
+   "source": [
+    "#energy and threshold electrical energy\n",
+    "print \"part (a)\"\n",
+    "no=1.9*10**19##cm**-3##\n",
+    "hc=6.6*10**-34##\n",
+    "v=5.45*10**14##Hz\n",
+    "av=2##\n",
+    "nv=1##\n",
+    "n2=no/2##\n",
+    "eng=((n2*hc*v)/(av*nv))## J cm**-2\n",
+    "print \"energy = %0.1f J cm**-2\"%eng\n",
+    "print \"part (b)\"\n",
+    "oe=0.50##\n",
+    "mr=0.15##\n",
+    "lr=0.20##\n",
+    "teng=eng/(oe*mr*lr)##\n",
+    "print \"threshold energy = %0.1f J cm**-2\"%teng\n",
+    "#electrical energy is calculated wrong in the textbook"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 14.3 : Page 360"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "maximum power = 157028.23 MW\n"
+     ]
+    }
+   ],
+   "source": [
+    "from __future__ import division\n",
+    "from math import log, exp\n",
+    "#output power\n",
+    "h=0.6943*10**-6##\n",
+    "lm=10##in cm\n",
+    "r1=1.0##\n",
+    "r2=0.8##\n",
+    "t1=0.98##\n",
+    "As=1##cm**2##\n",
+    "Ls=2##cm\n",
+    "gth=((1/(2*lm))*log((1/(r1*r2*(t1)**8))))+(As*Ls)/lm##\n",
+    "sg=1.5*10**-20##\n",
+    "ndth=gth/sg##cm**-3##\n",
+    "nth=ndth*As*lm##atoms\n",
+    "ni=5*nth##atoms\n",
+    "ng=1.78##\n",
+    "ns=2.7##\n",
+    "lair=2##\n",
+    "c=3*10**10##\n",
+    "trt=((2*ng*lm)/c)+((2*ns*Ls)/c)+((2*lair)/c)##seconds\n",
+    "npmax=((ni-nth)/2)-(nth/2)*log(ni/nth)##photons\n",
+    "L=14##cm\n",
+    "at=((As*Ls)/L)+((1/(2*L))*log(1/(r1*t1**8)))##\n",
+    "aext=((1/(2*L))*log(1/r2))##\n",
+    "tp=((trt)/(1-(r1*r2*t1**8*exp(-2*As*Ls))))##seconds\n",
+    "hc=6.6*10**-34##\n",
+    "pmax=((aext/at)*hc*c*npmax)/(h*tp)##in watts\n",
+    "print \"maximum power = %0.2f MW\"%(pmax*10**-6)\n",
+    "#answer is wrong in the textbook"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 14.4 : Page 365"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "part (a)\n",
+      "pulse width,del_v = 0.67 ns\n",
+      "spatial length, Lp = 20.00 cm \n",
+      "part (b)\n",
+      "pulse width, del_v = 16.67 ps\n",
+      "spatial length, Lp = 5.00 mm\n"
+     ]
+    }
+   ],
+   "source": [
+    "#pulse width and spatial length \n",
+    "print \"part (a)\"\n",
+    "#given data :\n",
+    "del_v=1.5*10**9## in Hz\n",
+    "tau_p=1/del_v#\n",
+    "C=3*10**8## constant\n",
+    "print \"pulse width,del_v = %0.2f ns\"%(tau_p*10**9)\n",
+    "Lp=C*tau_p#\n",
+    "print \"spatial length, Lp = %0.2f cm \"%(Lp*10**2)\n",
+    "#spatial length is calculated wrong in the textbook\n",
+    "print \"part (b)\"\n",
+    "del_v=6*10**10## in Hz\n",
+    "tau_p=1/del_v#\n",
+    "C=3*10**8## constant\n",
+    "print \"pulse width, del_v = %0.2f ps\"%(tau_p*10**12)\n",
+    "Lp=C*tau_p*10**3#\n",
+    "print \"spatial length, Lp = %0.2f mm\"%(Lp)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example 14.5 : Page 366"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "time difference is = 0.44 micro-seconds\n"
+     ]
+    }
+   ],
+   "source": [
+    "#time difference\n",
+    "n=1.33##\n",
+    "x=2##\n",
+    "l=50##m\n",
+    "c=3*10**8##m/s\n",
+    "dt=((n*x*l)/c)##s\n",
+    "print \"time difference is = %0.2f micro-seconds\"%(dt*10**6)"
+   ]
+  }
+ ],
+ "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
+}