title: Numerical studies of focal modulation microscopy in high-NA system.
abstract: High spatial resolution with deep imaging penetration depth is the main advantage of focal modulation microscopy (FMM). This paper investigates effects of polarization on FMM in a high-NA system based on vectorial diffraction theory. Compared with confocal microscopy, FMM shows a 20.1% improvement in axial resolution. The performance of different polarization patterns is also discussed numerically. The study on polarization modulation may provide a new way to obtain a tighter focal spot.
authors.forename: Bingzhao
authors.initials: B
authors.lastname: Zhu
authors.forename: Shuhao
authors.initials: S
authors.lastname: Shen
authors.forename: Yao
authors.initials: Y
authors.lastname: Zheng
authors.forename: Wei
authors.initials: W
authors.lastname: Gong
authors.forename: Ke
authors.initials: K
authors.lastname: Si