Arbitrary continuous nano-marks generated by multifocal spot arrays for controllable laser printing. (17th February 2017)

• Record Type: Journal Article
• Authors: Wen, Jing; Feng, Hui; Liu, Shiliang; Zhang, Dawei
• Is Part Of: Laser physics. Volume 27:Number 4(2017:Apr.)
• Publication Date: 2017-02-17
• Subjects: multifocal spot arrays -- laser printing -- marks; Lasers -- Periodicals; 621.36605
• DOI: 10.1088/1555-6611/aa5ada
• Languages: English
• ISSNs: 1054-660X

Abstract

Abstract: Phase-only modulations derived from the Debye approximation of the Richards–Wolf vectorial integral are used to produce a multifocal spot array. An analytical solution, which controls the position of each focal spot, can generate phase modulation images which are loaded into spatial light modulators. The calculated field distributions and the experimental images of the spot array on the back aperture of the objective are both demonstrated and validated. By overlapping the discrete focal points, continuous nano-structures of arbitrary marks can be achieved conveniently and easily. The above-proposed approach offers opportunities for flexible laser printing and creative micro-manipulation in the future.