Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1534305 | Optics Communications | 2014 | 10 Pages |
Abstract
We report a study on the enhancement of linearly p-polarized output power in long pulse (2-20 ms) multimode operation of single rod Nd:YAG laser. Laser resonator was designed using a simple optical scheme with a tilted 90° quartz rotator and a re-entering feedback mirror placed at appropriate location. A p-polarized average output power of 215 W has been achieved with a slope efficiency of 4.5%, which is on higher side for a typical long pulse single rod Nd:YAG laser system. It has been verified experimentally that the depolarization losses can be reduced significantly from a value of ~34% to ~9%. Further, this scheme has resulted in a significant enhancement (more than 80%) of p-polarized output power as compared to placing a polarizer in the resonator. This long pulse p-polarized laser will be useful in various material processing applications and nonlinear frequency conversions.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Ambar Choubey, Shyamal Mondal, Ravindra Singh, B.N. Upadhyaya, P.K. Datta, S.M. Oak,