Xuewen Shu
Huazhong University of Science and Technology, China
Title: Huazhong University of Science and Technology, China
Biography
Biography: Xuewen Shu
Abstract
Femtosecond-laser inscription/machining technology emerged in recent years as very powerful tool to fabricate microscale/nanoscale structures in transparent and nontransparent materials. Compared with conventional UV-laser inscription technology, fs-lasers can off er some unique advantages. First, the nonlinear nature of the absorption confi nes any induced changes to the focal volume. The spatial confi nement, combined with laser-beam scanning or sample translation, make it possible to micromachine geometrically complex structures in three dimensions. Second, the absorption process is independent of the material, enabling optical devices to be fabricated in compound substrates of diff erent materials. Third, the regions treated by fs-laser have a remarkably high etching rate compared with pristine material, which enable the flexible fabrication of holey structures such as microchannels. Since intense femtosecond laser pulses enable highly localized material modifi cation virtually in any material, it can thus be an excellent tool for the micro- and nano- fabrication of microstructures in a variety waveguides. In this paper, we will discuss some nano- and micro-structure made in diff erent waveguides and material using femtosecond laser. We will also discuss their functionality and potential applications.