光电工程, 2023, 50 (7): 230095, 网络出版: 2023-09-25
基于飞秒激光打印的二氧化钒光谱动态调控结构
Femtosecond laser printing of vanadium dioxide based optical meta-structures with tunable spectra engineering
二氧化钒 聚合物纳米复合材料 飞秒激光直写 光场调控 动态调控 vanadium dioxide polymer nanocomposite femtosecond laser direct writing light field regulation dynamic manipulation
摘要
Abstract
Over the past few years, the field of micro-/nano- photonics has witnessed a surge in research focused on developing innovative optical devices that offer dynamic spectra engineering. Among the materials showing promise in this area, vanadium dioxide (VO2) can actively manipulate its refractive index via a phase transition process, enabling the dynamic manipulation of spectra. In this work, a photosensitive polymer nanocomposite with tunable effective refractive index is prepared by incorporating VO2 nanocrystals into methacrylate monomers, which takes advantages of the phase change characteristics of VO2 and the photopolymerization properties of the monomer. In addition, with the aid of the state-of-the-art femtosecond laser processing technology, highly precise two-dimensional and three-dimensional micro-/nano- optical structures embedded with the phase change capabilities outlined by VO2 are achieved. Fascinatingly, the spectra measurements via Fourier transform infrared spectrometer reveal that when subjected to the critical phase transition temperatures, the printed micro-/nano- structures will undergo a thermally induced phase transition of the VO2 nanocrystals embedded within them. Consequently, there is a discernible alteration in the effective refractive index of the optically functionalized structure, inspiring the dynamic manipulation of the short-band spectra.
朱家琦, 吴世宇, 宋世超, 曹耀宇. 基于飞秒激光打印的二氧化钒光谱动态调控结构[J]. 光电工程, 2023, 50(7): 230095. Jiaqi Zhu, Shiyu Wu, Shichao Song, Yaoyu Cao. Femtosecond laser printing of vanadium dioxide based optical meta-structures with tunable spectra engineering[J]. Opto-Electronic Engineering, 2023, 50(7): 230095.