Multilevel rate-equation analysis to explain the recent observations of limitations to optical limiting dyes

Steve Hughes, Brian Wherrett

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

A theoretical rate-equation analysis is presented to investigate the molecular properties that are important for achieving high-fluence optical limiting. Critical conditions for achieving induced absorption are derived in terms of the material and laser parameters by employing a range of hierarchical energy-level models. The influences of stimulated emission and saturation of the excited-state absorption are seen to induce the regime of optical limiting to one of increasing transmittance. This is in direct agreement with recent experimental measurements.

Original languageEnglish
Pages (from-to)3546-3552
Number of pages7
JournalPhysical Review A
Volume54
Issue number4
Publication statusPublished - 1996

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