Fabrication of a multifaceted mapping mirror using two-photon polymerization for a snapshot image mapping spectrometer

Date
2023
Journal Title
Journal ISSN
Volume Title
Publisher
Optica Publishing Group
Description
Abstract

A design and fabrication technique for making high-precision and large-format multifaceted mapping mirrors is presented. The method is based on two-photon polymerization, which allows more flexibility in the mapping mirror design. The mirror fabricated in this paper consists of 36 2D tilted square pixels, instead of the continuous facet design used in diamond cutting. The paper presents a detailed discussion of the fabrication parameters and optimization process, with particular emphasis on the optimization of stitching defects by compensating for the overall tilt angle and reducing the printing field of view. The fabricated mirrors were coated with a thin layer of aluminum (93 nm) using sputter coating to enhance the reflection rate over the target wave range. The mapping mirror was characterized using a white light interferometer and a scanning electron microscope, which demonstrates its optical quality surface (with a surface roughness of 12 nm) and high-precision tilt angles (with an average of 2.03% deviation). Finally, the incorporation of one of the 3D printed mapping mirrors into an image mapping spectrometer prototype allowed for the acquisition of high-quality images of the USAF resolution target and bovine pulmonary artery endothelial cells stained with three fluorescent dyes, demonstrating the potential of this technology for practical applications.

Description
Advisor
Degree
Type
Journal article
Keywords
Citation

Lu, Jiawei, Ng, Xue Wen, Piston, David, et al.. "Fabrication of a multifaceted mapping mirror using two-photon polymerization for a snapshot image mapping spectrometer." Applied Optics, 62, no. 20 (2023) Optica Publishing Group: 5416-5426. https://doi.org/10.1364/AO.495466.

Has part(s)
Forms part of
Rights
This work is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the work beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.
Link to license
Citable link to this page