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Nanopatterned Phase Change Material for Mid-Infrared Tunable Optical Filters using Germanium Antimony Telluride

Morden, Dylan Jesse
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1639150897231556

Abstract Details

2021, Master of Science (M.S.), University of Dayton, Electro-Optics.
Material characteristics and crystallinity of germanium antimony telluride (GST) using various design methods for simulation and fabrication are presented. Experimental verification of designs in the mid-infrared are presented for GST-Ag structures and amorphous-crystalline GST structures. Baking an amorphous state GST sample at 200°C for 2 minutes will produce a crystalline state GST which causes the refractive index to increase significantly. Gradually increasing the temperature of an annealed phase change material, such as GST, controls the amount of crystallinity which allows the index of refraction to increase continuously over a significant range. Changing the amorphous state optically allows a lithography-free grating device. The use of GST in these metasurface structures uncovers unique properties that cover transmittance of devices, diffraction orders and tunable optical filters that are angular independent.
Imad Agha (Committee Chair)
Joshua Hendrickson (Committee Member)
Shiva Vangala (Committee Member)
Swapnajit Chakravarty (Committee Member)
65 p.
Design; Electromagnetics; Optics; Physics
GST germanium antimony tellurise phase change material pcm optical filter tunable

Recommended Citations

Citations

  • Morden, D. J. (2021). Nanopatterned Phase Change Material for Mid-Infrared Tunable Optical Filters using Germanium Antimony Telluride [Master's thesis, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1639150897231556

    APA Style (7th edition)

  • Morden, Dylan. Nanopatterned Phase Change Material for Mid-Infrared Tunable Optical Filters using Germanium Antimony Telluride. 2021. University of Dayton, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1639150897231556.

    MLA Style (8th edition)

  • Morden, Dylan. "Nanopatterned Phase Change Material for Mid-Infrared Tunable Optical Filters using Germanium Antimony Telluride." Master's thesis, University of Dayton, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1639150897231556

    Chicago Manual of Style (17th edition)

dayton1639150897231556
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This open access ETD is published by University of Dayton and OhioLINK.