diff options
Diffstat (limited to '3740/CH5/EX5.2')
| -rw-r--r-- | 3740/CH5/EX5.2/Ex5_2.jpg | bin | 0 -> 67849 bytes | |||
| -rw-r--r-- | 3740/CH5/EX5.2/Ex5_2.sce | 21 |
2 files changed, 21 insertions, 0 deletions
diff --git a/3740/CH5/EX5.2/Ex5_2.jpg b/3740/CH5/EX5.2/Ex5_2.jpg Binary files differnew file mode 100644 index 000000000..52953014d --- /dev/null +++ b/3740/CH5/EX5.2/Ex5_2.jpg diff --git a/3740/CH5/EX5.2/Ex5_2.sce b/3740/CH5/EX5.2/Ex5_2.sce new file mode 100644 index 000000000..84a4e244e --- /dev/null +++ b/3740/CH5/EX5.2/Ex5_2.sce @@ -0,0 +1,21 @@ +//Optoelectronics - An Introduction, 2nd Edition by J. Wilson and J.F.B. Hawkes
+//Example 5.2
+//OS=Windows XP sp3
+//Scilab version 5.5.2
+clc;
+clear;
+
+//given
+h=6.6e-34;//Planck's constant in SI Units
+c=3e8;//Speed of light in m/s
+lambda=550e-9;//Average wavelength in m
+k=1.38e-23;//Boltzmann constant in SI Units
+T=300;//Operating temperature in K
+
+//Let the difference between the two energy levels be DeltaE
+DeltaE=h*c/lambda;//Difference in energy levels in J
+mprintf("\n E2-E1 = %.2f eV",DeltaE/1.6e-19);//Division by 1.6*10^(-19) to convert into eV
+
+//Let the relative population of the energy levels 'N2/N1' be N
+N=exp(-DeltaE/(k*T));
+mprintf("\n N2/N1 = %.1e",N);//The answer provided in the textbook is wrong
|
