title: Dynamic generation of Debye diffraction-limited multifocal arrays for direct laser printing nanofabrication.
abstract: We propose a Debye-theory-based iterative method to produce accurate phase patterns for generating highly uniform diffraction-limited multifocal arrays with a high-NA objective. It is shown that by using the Debye method, the uniformity of the diffraction-limited focal arrays can reach 99%, owing to the critical consideration of the depolarization effect associated with high-NA objectives. The generated phase patterns are implemented in fast dynamic laser printing nanofabrication for the generation of individually controlled high-quality microvoid arrays in a solid polymer material by a single exposure of a femtosecond laser beam. As a result of the high-quality multifocal arrays, functional three-dimensional photonic crystals possessing multiple stopgaps with suppression up to 80% in transmission spectra are demonstrated.
authors.affiliation: Centre for Micro-Photonics and CUDOS, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria, Australia.
authors.forename: Han
authors.initials: H
authors.lastname: Lin
authors.forename: Baohua
authors.initials: B
authors.lastname: Jia
authors.forename: Min
authors.initials: M
authors.lastname: Gu