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//Example 8.2
//Program to determine:
//(a)Operating Wavelength
//(b)Incident Optical Power
clear;
clc ;
close ;
//Given data
eeta=0.65; //*100 percent - QUANTUM EFFICIENCY
e=1.602*10^(-19); //Coulumbs - CHARGE OF AN ELECTRON
h=6.626*10^(-34); //J/K - PLANK's CONSTANT
c=2.998*10^8; //m/s - VELOCITY OF LIGHT IN VACCUM
Ip=2.5*10^(-6); //A - PHOTOCURRENT
E=1.5*10^(-19); //J - ENERGY OF PHOTONS
//(a)Operating Wavelength
Lambda=h*c/E;
//Responsivity
R=eeta*e*Lambda/(h*c);
//(b)Incident Optical Power
Po=Ip/R;
//Displaying the Results in Command Window
printf("\n\n\t (a)Operating Wavelength = %0.2f um.",Lambda/10^(-6));
printf("\n\n\t (b)Incident Optical Power = %0.2f uW.",Po/10^(-6));
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