Title :
Coherence growth of laser radiation in Gaussian cavities
Author :
de Santis, P. ; Mascello, A. ; Palma, C. ; Perrone, M.R.
Author_Institution :
Dipartimento di Fisica, Rome Univ., Italy
fDate :
5/1/1996 12:00:00 AM
Abstract :
The beam quality and coherence growth of the laser radiation in stable and unstable cavities equipped with a Gaussian reflectivity mirror as output coupler has been investigated. An experimental analysis of the time evolution of the near- and far-field beam quality factor and spot size in dependence on the cavity configuration has been carried out. A theoretical analysis of the time evolution of a Schell-Gauss model beam propagating through Gaussian cavities is seen to provide a satisfactory description of the process in agreement with the experimental measurements for all the tested resonators
Keywords :
Q-factor; laser beams; laser cavity resonators; laser mirrors; laser stability; light coherence; optical couplers; reflectivity; Gaussian cavities; Gaussian reflectivity mirror; Schell-Gauss model beam propagation; beam quality; cavity configuration; coherence growth; far-field beam quality factor; laser radiation; near-field beam quality factor; output coupler; spot size; stable cavities; tested resonators; theoretical analysis; time evolution; unstable cavities; Filling; Laser beams; Laser modes; Laser noise; Mirrors; Optical coupling; Optical propagation; Optical resonators; Reflectivity; Testing;
Journal_Title :
Quantum Electronics, IEEE Journal of
