Subwavelength variation in the length of an external cavity strongly coupled to a very short (100 μm) dye laser results in large changes in the total intensity and frequency hopping of the lasing modes. These measurements are in agreement with a multimode theory of coupled-cavity laser dynamics. The modulation in the total intensity is due to the frequency-dependent gain associated with the coupled-cavity mode structure, while the mode hopping characteristics can be attributed to frequency-dependent losses caused by very weak (~10−3) reflections or diffuse scattering from the glass surfaces in the system.
© 1994 Optical Society of America
Original Manuscript: June 28, 1993
Published: January 15, 1994
M. Munroe, S. E. Hodges, J. Cooper, and M. G. Raymer, "Total intensity modulation and mode hopping in a coupled-cavity laser as a result of external-cavity length variations," Opt. Lett. 19, 105-107 (1994)