Analyses of output characteristics for four-level system laser

Authors
Huang, LL Fang, DW Zhi, H
Citation
Ll. Huang et al., Analyses of output characteristics for four-level system laser, ACT PHY C E, 8(6), 1999, pp. 449-454
Citations number
8
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA SINICA-OVERSEAS EDITION
ISSN journal
10003290 → ACNP
Volume
8
Issue
6
Year of publication
1999
Pages
449 - 454
Database
ISI
SICI code
1000-3290(199906)8:6<449:AOOCFF>2.0.ZU;2-N
Abstract
From transition-rate-equations and transmission-equations the formulas of t hreshold power and slope efficiency of an end-pumped laser for a four-level system are deduced. Citing the laser of Er:YAG as an example, we have disc ussed the differences of laser output characteristics between the three- an d four-level systems.