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+//Optoelectronics - An Introduction, 2nd Edition by J. Wilson and J.F.B. Hawkes
+//Example 6.1
+//OS=Windows XP sp3
+//Scilab version 5.5.2
+clc;
+clear;
+
+//given
+DeltaNu=1.1e11;//Fluorescent linewidth in Hz
+L=0.1;//Length of the laser rod in m
+c=3e8;//Speed of light in m/s
+
+//Let the mode separation be 'M'
+M=c/(2*L);//Mode separation in Hz
+mprintf("\n Mode separation = %.1e Hz",M);
+
+//Let the number of modes oscillating be 'N'
+N=DeltaNu/M;
+mprintf("\n The number of modes oscillating = %d",N);
+
+//Let the pulse separation in seconds be 't'
+t=2*L/c;
+mprintf("\n Pulse separation = %.1f ns",t/1e-9);//Dividing by 10^(-9) to convert into ns
+
+//Let the pulse duration be 'T'
+T=t/N;
+mprintf("\n Pulse duration = %.1f ps",T/1e-12);//Dividing by 10^(-12) to convert into ps
+//The answers vary due to round off error