MODE STRUCTURE AND THE NOISE PERFORMANCE OF A GAIN-GUIDED AMPLIFIER

Authors
WESSEL JG BATTLE PR CARLSTEN JL
Citation
Jg. Wessel et al., MODE STRUCTURE AND THE NOISE PERFORMANCE OF A GAIN-GUIDED AMPLIFIER, Physical review. A, 50(3), 1994, pp. 2587-2593
Citations number
20
Categorie Soggetti
Physics
Journal title
Physical review. A → ACNP
ISSN journal
10502947
Volume
50
Issue
3
Year of publication
1994
Pages
2587 - 2593
Database
ISI
SICI code
1050-2947(1994)50:3<2587:MSATNP>2.0.ZU;2-Z
Abstract
The spatial structure of a gain-guided amplifier is naturally describe d by a set of nonorthogonal modes. We present an analysis of the mode structure of an amplifier with a focused Gaussian gain. It is found th at the modes are spatially narrower and have a different radius of cur vature than the corresponding free-space modes. A calculation of the s ignal-to-noise ratio shows that the spatial structure of the input fie ld has a significant effect on the amplifier noise performance.