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authorprashantsinalkar2017-10-10 12:27:19 +0530
committerprashantsinalkar2017-10-10 12:27:19 +0530
commit7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch)
treedbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3543/CH5
parentb1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff)
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initial commit / add all books
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diff --git a/3543/CH5/EX5.24/EX5_24.png b/3543/CH5/EX5.24/EX5_24.png
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diff --git a/3543/CH5/EX5.24/Ex5_24.sce b/3543/CH5/EX5.24/Ex5_24.sce
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+// Example 5.24
+// Calculation of (a) wavelength (b) resposivity and (c) incident power
+// Page no 487
+
+clc;
+clear;
+close;
+
+//Given data
+e=0.7; // Efficiency
+c=3*10^8; // Speed of light
+h=6.62*10^-34 // Planck constant
+E=2.2*10^-19; // Energy of photons
+e1=1.6*10^-19; // Electron charge
+// (a) Wavelength computation
+lambda=h*c/E // Wavelength of laser source
+f=c/lambda;
+
+// (b) Responsivity
+R=e*(lambda*e1)/(h*c);
+
+// (c) Incident power
+Ip=2*10^-6; // Photocurrent
+P=Ip/R;
+
+//Display result on command window
+printf("\n Wavelength of operation (micrometer)= %0.1f ",lambda*10^6);
+printf("\n Responsivity R (A/W) = %0.2f ",R);
+printf("\n output power P (microwWatt)= %0.2f ",P*10^6);
+
diff --git a/3543/CH5/EX5.25/EX5_25.png b/3543/CH5/EX5.25/EX5_25.png
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+// Example 5.25
+// Computation of (a) quantum efficiency and (b) resposivity
+// page no 487
+
+clc;
+clear;
+close;
+
+//Given data
+nh=1.5*10^12; // No. of hole pairs generated
+np=2.5*10^12; // No. of incident photons
+lambda=0.85*10^-6; // Wavelength of laser source
+c=3*10^8; // Speed of light
+h=6.62*10^-34 // Planck constant
+e1=1.6*10^-19; // Electronic charge
+
+// (a) Quantum efficiency
+e=nh/np;
+
+// (b) Responsivity
+R=e*(lambda*e1)/(h*c); //
+
+//Display result on command window
+printf("\n Quantum efficiency = %0.1f ",e);
+printf("\n Responsivity R (A/W) = %0.3f ",R);
diff --git a/3543/CH5/EX5.26/EX5_26.png b/3543/CH5/EX5.26/EX5_26.png
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diff --git a/3543/CH5/EX5.26/Ex5_26.sce b/3543/CH5/EX5.26/Ex5_26.sce
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+// Example 5.26
+// Computation of (a) wavelength (b) power and (c) resposivity
+// page no 488
+
+clc;
+clear;
+close;
+
+//Given data
+e=0.7; // Quantum efficiency
+c=3*10^8; // Speed of light
+h=6.62*10^-34 // Planck constant
+E=1.5*10^-19; // Energy of photons
+e1=1.6*10^-19; // Electronic charge
+I=4*10^-6; // Diode photocurrent
+// (a) Wavelength of operation
+lambda=h*c/E;
+
+// (b) Responsivity
+R=e*(lambda*e1)/(h*c); //
+
+// (c) Incident optical power
+p=I/R; //power
+
+//Display result on command window
+printf("\n Wavelength of operation (micrometer)= %0.3f ",lambda*10^6);
+printf("\n Responsivity R (A/W) = %0.3f ",R);
+printf("\n output power P (microwWatt) = %0.3f ",p*10^6);
diff --git a/3543/CH5/EX5.27/EX5_27.png b/3543/CH5/EX5.27/EX5_27.png
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diff --git a/3543/CH5/EX5.27/Ex5_27.sce b/3543/CH5/EX5.27/Ex5_27.sce
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+// Example 5.27
+// Computation of (a)resposivity (b)output current and (c)multiplication factor
+// Page no 488
+
+clc;
+clear;
+close;
+
+//Given data
+e=0.7; // Quantum efficiency
+c=3*10^8; // Speed of light
+h=6.62*10^-34 // Planck constant
+E=1.5*10^-19; // Energy of photons
+lambda=0.85*10^-6 // Wavelength of laser source
+P=0.6*10^-6; // Incident light power
+e1=1.6*10^-19; // Electronic charge
+I=10*10^-6; // Output current of the device
+
+// (a) Responsivity
+R=e*(lambda*e1)/(h*c);
+
+// (b) Photocurrent
+Ip=R*P;
+
+// (c) Multiplication factor
+M=I/Ip
+
+//Display result on command window
+printf("\n Responsivity R (A/W) = %0.3f ",R);
+printf("\n Output current Ip (microA) = %0.3f ",Ip*10^6);
+printf("\n Multiplication factor M = %0.0f ",M);
+
+//Calculation mistake in (b)Phtocurrent in the book
diff --git a/3543/CH5/EX5.28/EX5_28.png b/3543/CH5/EX5.28/EX5_28.png
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+// Example 5.28
+// Computation of cut off wavelength
+// Page no 488
+
+clc;
+clear;
+close;
+
+// Given data
+h=6.626*10^-34; // Planck constant.
+c=3*10^8; // Speed of light
+Eg= 1.43*1.602*10^-19; // Bandgap energy
+
+// Cut off wavelength
+lambda= h*c/Eg;
+
+//Display result on command window
+printf("\n Cut off wavelength (micrometer) = %0.3f ",lambda*10^6);
diff --git a/3543/CH5/EX5.29/EX5_29.png b/3543/CH5/EX5.29/EX5_29.png
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+// Example 5.29
+// Computation of cut off wavelength
+// Page no 489
+
+clc;
+clear;
+close;
+
+// Given data
+h=6.626*10^-34; // Planck constant
+c=3*10^8; // Speed of light
+Eg= 0.7*1.602*10^-19; // Bandgap energy
+
+// Cut off wavelength
+lambda= h*c/Eg;
+//Display result on command window
+printf("\n Cut off wavelength (micrometer) = %0.2f ",lambda*10^6);
+
+
diff --git a/3543/CH5/EX5.30/EX5_30.png b/3543/CH5/EX5.30/EX5_30.png
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+// Example 5.30
+// Computation of value of reflectance
+// Page no 489
+
+clc;
+clear;
+close;
+
+// Given data
+n1=3.5; // Refractive index of silicon
+n2=1; // Refractive index of photodiode
+
+//Value of reflectance
+R=((n1-n2)/(n1+n2))^2;
+
+//Display result on command window
+printf("\n Value of reflectance (R) = %0.2f ",R);