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Abstract:
Arrayed microlenses have been demonstrated as promising optical devices for various applications in optical interconnection and communication. The precise control of arrayed microlenses morphologies still keeps a main challenge restricting its practical applications. In this study, we propose a flexible microlens morphology control technique based on the pre-processed femtosecond laser induced periodic surface structures (LIPSS) morphology control. Anisotropic elliptical LIPSS morphology has been demonstrated under linearly polarized fs laser irradiation due to the grating-assisted surface plasmon polaritons scattering effect. Based on pre-processed surface structures morphology control, polarization-dependent geometrical morphology of microlens array on Si can be obtained with controllable morphologies via the subsequent isotropic chemical wet etching. By varying the linear polarization direction of the incident fs laser, anisotropic microlens can be fabricated with the major axis along the polarization direction. In contrast, symmetric circular morphology can be obtained by controlling the morphology of the pre-processed surface structure to nearly circular geometrical morphology under circular polarization.
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OPTICS AND LASER TECHNOLOGY
ISSN: 0030-3992
Year: 2019
Volume: 119
5 . 0 0 0
JCR@2022
ESI Discipline: ENGINEERING;
ESI HC Threshold:136
JCR Journal Grade:1
Cited Count:
WoS CC Cited Count: 12
SCOPUS Cited Count: 11
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 4
Affiliated Colleges: