Table of Contents
Laser Chemistry
Volume 20 (2002), Issue 2-4, Pages 81-87

Realization of Optical Logic Gates Using the Thermal Lens Effect

1International School of Photonics, Cochin University of Science & Technology, Cochin 682022, India
2Catholicate College, Pathanamthitta 689645, India

Received 7 March 2002

Copyright © 2002 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A sensitive method based on the principle of photothermal phenomena to realize optical logic gates is presented. A dual beam thermal lens method using low power cw lasers in a dye-doped polymer can be very effectively used as an alternate technique to perform the logical function such as NAND, AND and OR.