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Attosecond Noncollinear Four-Wave Mixing Spectroscopy of Ultrafast Quantum Dynamics
Attosecond Noncollinear Four-Wave Mixing Spectroscopy of Ultrafast Quantum Dynamics
Detailed Information
- Material Type
- 단행본
- 0017359155
- Date and Time of Latest Transaction
- 20260202104842
- ISBN
- 9798297600690
- DDC
- 540
- Author
- Puskar, Nicolette Gabrielle.
- Title/Author
- Attosecond Noncollinear Four-Wave Mixing Spectroscopy of Ultrafast Quantum Dynamics
- Publish Info
- [Sl] : University of California, Berkeley, 2025
- Publish Info
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- Material Info
- 175 p
- General Note
- Source: Dissertations Abstracts International, Volume: 87-04, Section: B.
- General Note
- Advisor: Leone, Stephen R.;Neumark, Daniel M.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Berkeley, 2025.
- Abstracts/Etc
- 요약Attosecond noncollinear four-wave mixing (FWM) spectroscopy with extreme ultraviolet (XUV) and near-infrared (NIR) pulses enables background-free, time-resolved measurements of ultrafast quantum dynamics. This technique generates spatially isolated FWM signals in order to probe correlation-driven electronic decay in a quantum-state-specific manner. The experimental apparatus is designed to compress the NIR pulses to the few-cycle regime, generate XUV pulses via table-top high-harmonic generation, and configure the three-pulses in a noncollinear, cross-beam geometry to produce FWM signals at wavevector, phase-matched angles. Attosecond noncollinear FWM accesses the dynamics of both optically allowed and forbidden excited states relative to the ground state, providing a more complete picture of electronic interactions during relaxation processes.This thesis explores fundamental electron-electron interactions via the study of autoionization decay lifetime dynamics across a series of experiments conducted in noble gases. In helium, doubly excited states show longer lifetimes with increasing principal quantum number n, consistent with the Rydberg scaling law. In neon, inner-valence excited states exhibit longer lifetimes with greater angular momentum of the orbital quantum number l, reflecting decreased spatial overlap with the core hole. In xenon, core-excited states decay via a spectator mechanism with lifetimes largely independent of principal quantum number n and orbital quantum number l. Unexpectedly long-lived dark-state signals are attributed to NIR coupling to nearby multi-electronic states. Together, these results offer new insight into how electronic structure and coupling shape decay dynamics governed by electron correlation during excited state decay processes.Future iterations of attosecond noncollinear FWM will extend this technique to the soft x-ray regime, revealing the electronic dynamics underpinning biologically-significant molecules, condensed-phase materials, and chemical reactions.
- Subject Added Entry-Topical Term
- Chemistry
- Subject Added Entry-Topical Term
- Physical chemistry
- Subject Added Entry-Topical Term
- Atomic physics
- Subject Added Entry-Topical Term
- Quantum physics
- Subject Added Entry-Topical Term
- Optics
- Index Term-Uncontrolled
- Four-wave mixing spectroscopy
- Index Term-Uncontrolled
- Near-infrared pulses
- Index Term-Uncontrolled
- Ultraviolet
- Index Term-Uncontrolled
- Ultrafast quantum dynamics
- Index Term-Uncontrolled
- Quantum number
- Added Entry-Corporate Name
- University of California, Berkeley Chemistry
- Host Item Entry
- Dissertations Abstracts International. 87-04B.
- Electronic Location and Access
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202104842
■006m o d
■007cr#unu||||||||
■020 ▼a9798297600690
■035 ▼a(MiAaPQ)AAI32173140
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a540
■1001 ▼aPuskar, Nicolette Gabrielle.
■24510▼aAttosecond Noncollinear Four-Wave Mixing Spectroscopy of Ultrafast Quantum Dynamics
■260 ▼a[Sl]▼bUniversity of California, Berkeley▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a175 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-04, Section: B.
■500 ▼aAdvisor: Leone, Stephen R.;Neumark, Daniel M.
■5021 ▼aThesis (Ph.D.)--University of California, Berkeley, 2025.
■520 ▼aAttosecond noncollinear four-wave mixing (FWM) spectroscopy with extreme ultraviolet (XUV) and near-infrared (NIR) pulses enables background-free, time-resolved measurements of ultrafast quantum dynamics. This technique generates spatially isolated FWM signals in order to probe correlation-driven electronic decay in a quantum-state-specific manner. The experimental apparatus is designed to compress the NIR pulses to the few-cycle regime, generate XUV pulses via table-top high-harmonic generation, and configure the three-pulses in a noncollinear, cross-beam geometry to produce FWM signals at wavevector, phase-matched angles. Attosecond noncollinear FWM accesses the dynamics of both optically allowed and forbidden excited states relative to the ground state, providing a more complete picture of electronic interactions during relaxation processes.This thesis explores fundamental electron-electron interactions via the study of autoionization decay lifetime dynamics across a series of experiments conducted in noble gases. In helium, doubly excited states show longer lifetimes with increasing principal quantum number n, consistent with the Rydberg scaling law. In neon, inner-valence excited states exhibit longer lifetimes with greater angular momentum of the orbital quantum number l, reflecting decreased spatial overlap with the core hole. In xenon, core-excited states decay via a spectator mechanism with lifetimes largely independent of principal quantum number n and orbital quantum number l. Unexpectedly long-lived dark-state signals are attributed to NIR coupling to nearby multi-electronic states. Together, these results offer new insight into how electronic structure and coupling shape decay dynamics governed by electron correlation during excited state decay processes.Future iterations of attosecond noncollinear FWM will extend this technique to the soft x-ray regime, revealing the electronic dynamics underpinning biologically-significant molecules, condensed-phase materials, and chemical reactions.
■590 ▼aSchool code: 0028.
■650 4▼aChemistry
■650 4▼aPhysical chemistry
■650 4▼aAtomic physics
■650 4▼aQuantum physics
■650 4▼aOptics
■653 ▼aFour-wave mixing spectroscopy
■653 ▼aNear-infrared pulses
■653 ▼aUltraviolet
■653 ▼aUltrafast quantum dynamics
■653 ▼aQuantum number
■690 ▼a0485
■690 ▼a0494
■690 ▼a0748
■690 ▼a0752
■690 ▼a0599
■71020▼aUniversity of California, Berkeley▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g87-04B.
■790 ▼a0028
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359155▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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