initial commit / add all books

12 files changed, 81 insertions, 0 deletions

diff --git a/3537/CH6/EX6.1/Ex6_1.sce b/3537/CH6/EX6.1/Ex6_1.sce
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index 000000000..ae0d79777
--- /dev/null
+++ b/3537/CH6/EX6.1/Ex6_1.sce
@@ -0,0 +1,12 @@
+//Example 6_1

+clc();

+clear;

+//To calculate the relative population

+h=6.626*10^-34

+v=4.32*10^14

+kb=1.38*10^-23

+t=300

+k=(h*v)/(kb*t)

+n1_n2=%e^k

+printf("Relative population N1/N2=")

+disp(n1_n2)

diff --git a/3537/CH6/EX6.1/Ex6_1.txt b/3537/CH6/EX6.1/Ex6_1.txt
new file mode 100644
index 000000000..62352cf38
--- /dev/null
+++ b/3537/CH6/EX6.1/Ex6_1.txt
@@ -0,0 +1 @@
+Relative population N1/N2= 1.065D+30  
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diff --git a/3537/CH6/EX6.2/Ex6_2.sce b/3537/CH6/EX6.2/Ex6_2.sce
new file mode 100644
index 000000000..497f7b1ab
--- /dev/null
+++ b/3537/CH6/EX6.2/Ex6_2.sce
@@ -0,0 +1,17 @@
+//Example 6_2

+clc();

+clear;

+//To find how many photons emitted and power density

+v=3*10^8

+lamda=632.8*10^-9

+fre=v/lamda

+outpow=2.3*10^-3

+n=1

+h=6.626*10^-34

+N=(outpow*n)/(h*fre)

+printf("Number of photons emitted is")

+disp(N)

+printf("photons/second\n")

+spotarea=1*10^-6

+density=outpow/spotarea

+printf("Power density is %d kW/met^2",density)

diff --git a/3537/CH6/EX6.2/Ex6_2.txt b/3537/CH6/EX6.2/Ex6_2.txt
new file mode 100644
index 000000000..d87358bb6
--- /dev/null
+++ b/3537/CH6/EX6.2/Ex6_2.txt
@@ -0,0 +1,4 @@
+Number of photons emitted is 

+    7.322D+15  photons/second

+

+Power density is 2300 kW/met^2 
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diff --git a/3537/CH6/EX6.3/Ex6_3.sce b/3537/CH6/EX6.3/Ex6_3.sce
new file mode 100644
index 000000000..8652782c8
--- /dev/null
+++ b/3537/CH6/EX6.3/Ex6_3.sce
@@ -0,0 +1,9 @@
+//Example 6_3

+clc();

+clear;

+//To calculate the wavelength of emission from GaAs

+Eg=1.44*1.6*10^-19

+h=6.626*10^-34

+c=3*10^8

+lamda=(h*c)/Eg

+printf("Wavelength = %.10f",lamda)

diff --git a/3537/CH6/EX6.3/Ex6_3.txt b/3537/CH6/EX6.3/Ex6_3.txt
new file mode 100644
index 000000000..66fb40f22
--- /dev/null
+++ b/3537/CH6/EX6.3/Ex6_3.txt
@@ -0,0 +1 @@
+Wavelength = 0.0000008628 
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diff --git a/3537/CH6/EX6.4/Ex6_4.sce b/3537/CH6/EX6.4/Ex6_4.sce
new file mode 100644
index 000000000..940061a00
--- /dev/null
+++ b/3537/CH6/EX6.4/Ex6_4.sce
@@ -0,0 +1,7 @@
+//Example 6_4

+clc();

+clear;

+//To find the band gap

+lamda=1.55  //units in eV

+eg=1.24/lamda   //units in eV

+printf("Band gap is Eg=%.1feV",eg)

diff --git a/3537/CH6/EX6.4/Ex6_4.txt b/3537/CH6/EX6.4/Ex6_4.txt
new file mode 100644
index 000000000..c30a1e9a0
--- /dev/null
+++ b/3537/CH6/EX6.4/Ex6_4.txt
@@ -0,0 +1 @@
+ Band gap is Eg=0.8eV 
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diff --git a/3537/CH6/EX6.5/Ex6_5.sce b/3537/CH6/EX6.5/Ex6_5.sce
new file mode 100644
index 000000000..b2519550b
--- /dev/null
+++ b/3537/CH6/EX6.5/Ex6_5.sce
@@ -0,0 +1,12 @@
+//Example 6_5

+clc();

+clear;

+//To find the relative population of the states in Ruby laser

+h=6.626*10^-34

+v=3*10^8  //units in met/sec

+kb=1.381*10^-23  //units in J/L

+t=300   //units in K

+n_no=exp((h*v)/(kb*t))

+printf("The relative population of two states is N/N0=")

+disp(n_no)

+//In textb book answer is printed wrong as 8*10^31 correct answer is 1.000048 

diff --git a/3537/CH6/EX6.5/Ex6_5.txt b/3537/CH6/EX6.5/Ex6_5.txt
new file mode 100644
index 000000000..401851643
--- /dev/null
+++ b/3537/CH6/EX6.5/Ex6_5.txt
@@ -0,0 +1,2 @@
+The relative population of two states is N/N0=  1.000048  

+ 
\ No newline at end of file
diff --git a/3537/CH6/EX6.6/Ex6_6.sce b/3537/CH6/EX6.6/Ex6_6.sce
new file mode 100644
index 000000000..c3c620053
--- /dev/null
+++ b/3537/CH6/EX6.6/Ex6_6.sce
@@ -0,0 +1,13 @@
+//Example 6_6

+clc();

+clear;

+//To calculate the ratio of stimulated emission rate to spontaneous emission

+c=3*10^8  //units in met/sec

+lamda=0.5*10^-9

+v=(c/lamda)*10^-3   //units in hz

+h=6.626*10^-34  //units in J S

+kb=1.381*10^-23  //units in J/K

+t=1000

+b21_a21=1/(exp((h*v)/(kb*t))-1)

+printf("The ratio of Simulated emission to spontaneous emission B21/A21=")

+disp(b21_a21)

diff --git a/3537/CH6/EX6.6/Ex6_6.txt b/3537/CH6/EX6.6/Ex6_6.txt
new file mode 100644
index 000000000..1ff006de4
--- /dev/null
+++ b/3537/CH6/EX6.6/Ex6_6.txt
@@ -0,0 +1,2 @@
+The ratio of Simulated emission to spontaneous emission B21/A21=  3.145D-13  

+ 
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