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Nonlinear Optical Spectroscopy of Tw...

Cui, Qiannan.

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Nonlinear Optical Spectroscopy of Two-Dimensional Materials.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Nonlinear Optical Spectroscopy of Two-Dimensional Materials./
Author:	Cui, Qiannan.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	144 p.
Notes:	Source: Dissertation Abstracts International, Volume: 79-04(E), Section: B.
Contained By:	Dissertation Abstracts International79-04B(E).
Subject:	Condensed matter physics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10271209
ISBN:	9780355342864

Nonlinear Optical Spectroscopy of Two-Dimensional Materials.
Cui, Qiannan.

Nonlinear Optical Spectroscopy of Two-Dimensional Materials. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 144 p.

Source: Dissertation Abstracts International, Volume: 79-04(E), Section: B.

Thesis (Ph.D.)--University of Kansas, 2017.

Nonlinear optical properties of two-dimensional (2D) materials, such as transition metal dichalcogenides (TMDs), graphene, black phosphorus, and so on, play a key role of understanding nanoscale light-matter interactions, as well as developing nanophotonics applications from solar cells to quantum computation. With ultrafast lasers, we experimentally study nonlinear optical properties of 2D materials.

ISBN: 9780355342864Subjects--Topical Terms:

3173567
Condensed matter physics.

Nonlinear Optical Spectroscopy of Two-Dimensional Materials.
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100 1 $a Cui, Qiannan. $3 3344310
245 1 0 $a Nonlinear Optical Spectroscopy of Two-Dimensional Materials.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 144 p.
500 $a Source: Dissertation Abstracts International, Volume: 79-04(E), Section: B.
500 $a Adviser: Hui Zhao.
502 $a Thesis (Ph.D.)--University of Kansas, 2017.
520 $a Nonlinear optical properties of two-dimensional (2D) materials, such as transition metal dichalcogenides (TMDs), graphene, black phosphorus, and so on, play a key role of understanding nanoscale light-matter interactions, as well as developing nanophotonics applications from solar cells to quantum computation. With ultrafast lasers, we experimentally study nonlinear optical properties of 2D materials.
520 $a Employing transient absorption microscopy, we study several members of 2D materials, such as WSe2, TiS3 and ReS2. The dynamical saturable absorption process of 2D excitons is spatiotemporally resolved. Intrinsic parameters of these 2D materials, such as exciton lifetime, exciton diffusion coefficient, and exciton mobility, are effectively measured. Especially, in-plane anisotropy of transient absorption and diffusive transport is observed for 2D excitons in monolayer ReS2, demonstrating the in-plane degree of freedom. Furthermore, with quantum interference and control nanoscopy, we all-optically inject, detect and manipulate nanoscale ballistic charge currents in a ReS2 thin film. By tuning the phase difference between one photon absorption and two photon absorption transition paths, sub-picosecond timescale of ballistic currents is coherently controlled for the first time in TMDs. In addition, the spatial resolution is two-order of magnitude smaller than optical diffraction limit. The second-order optical nonlinearity of 2D monolayers is resolved by second harmonic generation (SHG) microscopy. We measure the second-order susceptibility of monolayer MoS 2. The angular dependence of SHG in monolayer MoS2 shows strong symmetry dependence on its crystal lattice structure. Hence, second harmonic generation microscopy can serve as a powerful tool to noninvasively determine the crystalline directions of 2D monolayers. The real and imaginary parts of third-order optical nonlinearity of 2D monolayers are resolved by third harmonic generation (THG) microscopy and two-photon transient absorption microscopy, respectively. With third harmonic generation microscopy, we observe strong and anisotropic THG in monolayer and multilayer ReS2. Comparing with 2D materials with hexagonal lattice, such as MoS2, the third-order susceptibility is higher by one order of magnitude in ReS2 with a distorted 1T structure. The in-plane anisotropy of THG is attributed to the lattice distortion in ReS2 after comparing with a symmetry analysis. With two-photon transient absorption microscopy, we observe a giant two-photon absorption coefficient of monolayer WS2.
590 $a School code: 0099.
650 4 $a Condensed matter physics. $3 3173567
650 4 $a Optics. $3 517925
650 4 $a Materials science. $3 543314
690 $a 0611
690 $a 0752
690 $a 0794
710 2 $a University of Kansas. $b Physics & Astronomy. $3 3344311
773 0 $t Dissertation Abstracts International $g 79-04B(E).
790 $a 0099
791 $a Ph.D.
792 $a 2017
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10271209