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.
© 2011 Optical Society of America
Original Manuscript: October 18, 2010
Revised Manuscript: December 20, 2010
Manuscript Accepted: December 22, 2010
Published: January 31, 2011
Han Lin, Baohua Jia, and Min Gu, "Dynamic generation of Debye diffraction-limited multifocal arrays for direct laser printing nanofabrication," Opt. Lett. 36, 406-408 (2011)
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