A simulation and experiment were performed to demonstrate that a laser using volume Bragg grating as one of the cavity mirrors can achieve lasing even if the laser cavity length exceeds the traditional stable cavity condition. The laser transverse mode changes from a Gaussian beam into a ring-shaped mode as the laser cavity length increases from stable to unstable cavity conditions. At the same time, the effective modal reflectivity is reduced as the cavity length increases.
© 2013 Optical Society of America
Lasers and Laser Optics
Original Manuscript: August 27, 2013
Revised Manuscript: November 6, 2013
Manuscript Accepted: November 7, 2013
Published: December 9, 2013
Te-Yuan Chung, Yu-Hua Hsieh, Chi-Chun Liao, and Ching-Hsiao Arthur Cheng, "Transverse modes of a laser using volume Bragg grating as the cavity mirror," Opt. Lett. 38, 5346-5348 (2013)