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17 March 2023 Development of a multifaceted mapping mirror using two-photon polymerization for snapshot image mapping spectrometer
Jiawei Lu, Xue Wen Ng, David Piston, Tomasz Tkaczyk
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Proceedings Volume PC12412, Laser 3D Manufacturing X; PC124120R (2023) https://doi.org/10.1117/12.2653389
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
Snapshot Image Mapping Spectrometer (IMS) allows to obtain 3D (x,y,lamda) datacubes instantaneously in a snapshot mode. The multifaceted mapping mirror is a critical component in the IMS for creating void spaces between image lines for spectral information. Here we present a completely new fabrication technique for mapping mirrors based on lithographic Two-Photon Polymerization (2PP). A grayscale 16-bit pixelized mapping mirror was designed in MATLAB, which allows to adopt 1-micron slicing distance and 0.2-micron hatching distance to keep low surface roughness while reducing printing time. The instability issue of the surface structure can be solved by adding two bases. Many other parameters (attenuation, develop time) used in 2PP printing were also optimized to provide the best surface quality. The new fabrication method decreases the facet shadowing (smaller height discrepancies), provides uniform image intensity, and enables easy reproducibility.
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Jiawei Lu, Xue Wen Ng, David Piston, and Tomasz Tkaczyk "Development of a multifaceted mapping mirror using two-photon polymerization for snapshot image mapping spectrometer", Proc. SPIE PC12412, Laser 3D Manufacturing X, PC124120R (17 March 2023); https://doi.org/10.1117/12.2653389
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KEYWORDS
Mirrors
Two photon polymerization
Spectroscopy
Printing
Associative arrays
Mirror structures
Retinal scanning
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