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

---
 2825/CH18/EX18.7/Ex18_7.sce | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100755 2825/CH18/EX18.7/Ex18_7.sce

(limited to '2825/CH18/EX18.7/Ex18_7.sce')

diff --git a/2825/CH18/EX18.7/Ex18_7.sce b/2825/CH18/EX18.7/Ex18_7.sce
new file mode 100755
index 000000000..7785e160d
--- /dev/null
+++ b/2825/CH18/EX18.7/Ex18_7.sce
@@ -0,0 +1,10 @@
+//Ex18_7 Pg-947
+clc
+
+L=10^(-6) //length of cavity in m
+r2=0.5 //relative coefficient of semiconductor
+r1=1.5 //relative coefficient of semiconductor
+
+disp("No internal loss means di=0; we have")
+g=log10(1/(r1*r2))/(2*L) //gain of the laser (textbook answer is wrong)
+printf(" Gain g = %.2f*1e3 cm^(-1)",g*1e-3)
-- 
cgit