title: Strehl ratio for focusing into biaxially birefringent media.
abstract: The Strehl ratio for focusing into biaxially birefringent media with small birefringence is investigated. An analytical expression for the Strehl ratio as a function of the polarization and birefringence parameters is derived in the paraxial limit from a generalization of the scalar aberration theory. The expression agrees well with results of a numerical calculation.
authors.affiliation: Philips Research Laboratories, 5656 AA Eindhoven, The Netherlands. sjoerd.stallinga@philips.com
authors.forename: Sjoerd
authors.initials: S
authors.lastname: Stallinga