From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 1946/CH9/EX9.11.a/Ex_9_11_a.sce | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100755 1946/CH9/EX9.11.a/Ex_9_11_a.sce

(limited to '1946/CH9/EX9.11.a')

diff --git a/1946/CH9/EX9.11.a/Ex_9_11_a.sce b/1946/CH9/EX9.11.a/Ex_9_11_a.sce
new file mode 100755
index 000000000..70a71f5a0
--- /dev/null
+++ b/1946/CH9/EX9.11.a/Ex_9_11_a.sce
@@ -0,0 +1,14 @@
+// Example 9.11.a;//Optical gain
+clc;
+clear;
+close;
+e=1.6*10^-19;//elecronic charge
+h=1.26;//wavelength in micro meter
+C=3*10^8;//SPEED of light in meter per second
+n=0.60;//efficiency
+ht=6.62*10^-34;//plank constt.
+Ic=15;//CURRENT IN milli ampere
+Po=125;//output power in micro watt
+Gc=(ht*C*Ic*10^-3)/(h*10^-6*e*Po*10^-6);//Gain
+disp(Gc,"optical gain is")
+
-- 
cgit