How can the width of a laser line be less than that determined by Doppler broadening?

Question:

How can the width of a laser line be less than that determined by Doppler broadening?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Physical Chemistry

ISBN: 978-0321812001

3rd edition

Authors: Thomas Engel, Philip Reid

Question Posted: