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

Volume

32

Issue

5

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

802

Lastpage

812

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;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.493004

Filename

493004