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Liquid Crystal Diffractive Optical Elements: Applications and Limitations

Wang, Xinghua
http://rave.ohiolink.edu/etdc/view?acc_num=kent1122499777

Abstract Details

2005, PHD, Kent State University, College of Arts and Sciences / Chemical Physics.
This dissertation is related to the fundamental physics of liquid crystal (LC) diffractive optical element (DOE) and its application in beam steering, wavefront control in large optics, electronic holography etc. Extensive computer modeling is performed to study the fundamental physics of LC DOE that involves advanced simulation method such as: Finite Difference Time Domain (FDTD) simulation, CODE V ray tracing and diffractive beam propagation, 2-D and 3-D liquid crystal director simulation etc. As a result, fringing electric field effect, defect formation, diffraction efficiency, polarization effect in a high resolution OPA is quantitatively studied. Many new device structure and concepts that can substantially improve the efficiency and diffraction angle of a LC DOE is proposed, for example, an optimized OPA, a pinned electrode OPA, a non-symmetrical variable period binary grating etc. FDTD simulation with both TE and TM mode is carried out, light propagation in LC DOE with complicated 3-D director distribution is studied. Experimental study is carried out to verify the modeling results constantly. 2-D birefringence measurement, Electro-Optical response of the device, as well as the diffraction efficiency, near field phase distribution, wavefront quality, far field beam profile is carried out to study the optical performance of the LC DOE. High resolution wavefront control system for large aperture telescope based on a LC DOE is demonstrated. Active laser beam control for multiple target tracking and acquisition is performed. Opto-electronic reconstruction of a digitally recorded hologram is also demonstrated with the best quality so far observed in this field.
Philip Bos (Advisor)
404 p.
Physics, Optics
Liquid Crystal; diffractive optical element; optical phased array; spatial light modulator; high resolution wavefront control; aberration correction

Recommended Citations

Citations

  • Wang, X. (2005). Liquid Crystal Diffractive Optical Elements: Applications and Limitations [Doctoral dissertation, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=kent1122499777

    APA Style (7th edition)

  • Wang, Xinghua. Liquid Crystal Diffractive Optical Elements: Applications and Limitations. 2005. Kent State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=kent1122499777.

    MLA Style (8th edition)

  • Wang, Xinghua. "Liquid Crystal Diffractive Optical Elements: Applications and Limitations." Doctoral dissertation, Kent State University, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=kent1122499777

    Chicago Manual of Style (17th edition)

kent1122499777
2,124
© 2005, all rights reserved.
This open access ETD is published by Kent State University and OhioLINK.