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EFFECT OF THE RATIO OF ROD AND LAMP RADII IN CW AND Q-SWITCHED PERFORMANCE OF LAMP PUMPED ND:YAG LASER FOR ULTRA HARD MATERIAL PROCESSING

S. K. Sudheer1,* , V. P. Mahadevan Pillai1, V. U. Nayar1

Affiliation

  1. Department of Optoelectronics, University of Kerala, Kariavattom, Thiruvananthapuram- 695581, Kerala, India

Abstract

We discuss the fabrication of a lamp pumped Q-Switched Nd:YAG laser and the effect of the ratio of rod and lamp radii in CW and Q-switched performance of lamp pumped Nd:YAG laser for ultra hard material processing. The performance of the laser in CW operation with polarized and unpolarised configurations in both multimode and fundamental modes are compared. The experiments are repeated in Q-Switched operation by changing the repetition rate for different rod radii. The variation of slope efficiency and threshold pump power in the above cases are studied..

Keywords

Nd:YAG Laser, CW operation, Q-Switching, single elliptical cavity, Geometrical transfer function coefficient.

Submitted at: March 3, 2005
Accepted at: May 26, 2005

Citation

S. K. Sudheer, V. P. Mahadevan Pillai, V. U. Nayar, EFFECT OF THE RATIO OF ROD AND LAMP RADII IN CW AND Q-SWITCHED PERFORMANCE OF LAMP PUMPED ND:YAG LASER FOR ULTRA HARD MATERIAL PROCESSING, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 3, pp. 1593-1598 (2005)