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Nonlinear Optical Properties of Traditional and Novel Materials

Krupa, Sean J.
http://orcid.org/0000-0002-2315-338X
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1470746126

Abstract Details

2016, Doctor of Philosophy (PhD), Ohio University, Physics and Astronomy (Arts and Sciences).
Nonlinear optical processes are an excellent candidate to provide the heralded, indistinguishable, or entangled photons necessary for development of quantum mechanics based technology which currently lack bright sources of these photons. In order to support these technologies, and others, two classes of materials: traditional and novel, were investigated via optical characterization methods with goal of gaining insight into which materials and experimental conditions yield the greatest nonlinear optical effects. Optical characterization of periodically poled lithium niobate (PPLN) helped support the development of a simple, efficient photon pair source that could be easily integrated into optical networks. Additionally, an in-situ measurement of the 2nd order nonlinear optical coefficient was developed to aid in the characterization of PPLN pair sources. Lastly, an undergraduate demonstration of quantum key distribution was constructed such that students could see the primary application for PPLN photon pair sources in an affordable, approachable demonstration. A class of novel optical materials known as 2D materials has been identified as potential replacements to the traditional nonlinear optical materials discussed in Part I. Through optical characterization of second harmonic generation (SHG) the ideal conditions for spontaneous parametric downconversion were established as well as signal thresholds for successful detection. Attempts to observe SPDC produces hints that weak generate SPDC may be present in WS2 samples however this is incredibly difficult to confirm. As growth techniques of 2D materials improve, a photonic device constructed from these materials may be possible, however it will need some mechanism e.g. stacking, a cavity, etc. to help enhance the SPDC signal.
Eric Stinaff (Advisor)
Alexander Govorov (Committee Member)
Savas Kaya (Committee Member)
Nancy Sandler (Committee Member)
153 p.
Optics; Physics
Optics; Photonics; Lithium Niobate; 2D Materials; 2D Transition Metal Dichalcogenides; Quantum Key Distribution

Recommended Citations

Citations

  • Krupa, S. J. (2016). Nonlinear Optical Properties of Traditional and Novel Materials [Doctoral dissertation, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1470746126

    APA Style (7th edition)

  • Krupa, Sean. Nonlinear Optical Properties of Traditional and Novel Materials. 2016. Ohio University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1470746126.

    MLA Style (8th edition)

  • Krupa, Sean. "Nonlinear Optical Properties of Traditional and Novel Materials." Doctoral dissertation, Ohio University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1470746126

    Chicago Manual of Style (17th edition)

ohiou1470746126
1,124
© 2016, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.