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Timing and Synchronization in Time Correlated Single Photon Counting Methods
Timing and Synchronization in Time Correlated Single Photon Counting Methods
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105645
- ISBN
- 9798270220471
- DDC
- 541
- 저자명
- Hua, Ash Sueh.
- 서명/저자
- Timing and Synchronization in Time Correlated Single Photon Counting Methods
- 발행사항
- [Sl] : University of California, Los Angeles, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 131 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
- 주기사항
- Advisor: Caram, Justin Ryan.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2025.
- 초록/해제
- 요약The input of light and the subsequent outcomes or fates of that absorbed energy underlie our understanding of electronic structure of emissive molecules and materials. Using time correlated single photon counting (TCSPC) the arrival times of emission events are recorded with high precision, yielding the photon stream. By controlling the input of light and manipulating the output photon stream we can enrich photon arrival time information with more information about the state-to-state photodynamics in an emitter. In this thesis, I develop modular advanced TCSPC methods for encoding and extracting the complex information contained within the photon stream, across different timescales and across the spectral regions of visible, near infrared (NIR), and shortwave infrared (SWIR) light. The chapter outlines are as follows: Chapter 1 is an overview of electronic structure and photophysics accompanied by the methods and hardware used. Chapter 2 details fluorescent optical cycling (FOC), a method for the simultaneous observation of both prompt and delayed emission -both during and after multiple pulsed excitation- with uncompromised fine time resolution, that ultimately provides access to multi-state photophysical rates. I demonstrate FOC (in conjunction with quantum yield measurements) for uncovering the total photophysics (all radiative, nonradiative, and intersystem crossing rates) in a dual emissive platinum complex. Coupling FOC with Decay Associated Fourier Spectroscopy (DAFS), a modular TCSPC interferometric method for spectral access) yields correlated spectral-lifetime data for this dual emitting platinum complex. Lastly, FOC used with state-of-the-art superconducting nanowire single photon detectors (SNSPDs) is used for the direct detection of shortwave infrared (SWIR) single oxygen phosphorescence sensitized by rose bengal. Chapter 3 covers shortwave infrared (SWIR) region single dot studies of ultrabright HgTe quantum dots. Two different batches of HgTe quantum dots were synthesized, one under air and the other under inert argon. The photon streams from single dots are measured, yielding single dot intensity traces and lifetimes. Chapter 4 covers Spectrally-selective Time-resolved Emission Filtering (STEF), an interferometric or Fourier filtering method for separating signals that leverages the spectral coherences of emitted photon streams. STEF demonstrated in unmixing signals for several systems, including laser scatter and emitter, mixed and spectrally overlapping emitters, imaging biological systems, and in imaging biological systems with severe spectrally overlap. STEF allows for the bypassing conventional filters in the study of complex chromophore mixtures.
- 일반주제명
- Physical chemistry
- 일반주제명
- Materials science
- 일반주제명
- Analytical chemistry
- 일반주제명
- Nanoscience
- 키워드
- Interferometry
- 키워드
- Photophysics
- 키워드
- Single molecules
- 키워드
- Spectroscopy
- 기타저자
- University of California, Los Angeles Chemistry 0153
- 기본자료저록
- Dissertations Abstracts International. 87-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105645
■006m o d
■007cr#unu||||||||
■020 ▼a9798270220471
■035 ▼a(MiAaPQ)AAI32400569
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a541
■1001 ▼aHua, Ash Sueh.
■24510▼aTiming and Synchronization in Time Correlated Single Photon Counting Methods
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a131 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-06, Section: B.
■500 ▼aAdvisor: Caram, Justin Ryan.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2025.
■520 ▼aThe input of light and the subsequent outcomes or fates of that absorbed energy underlie our understanding of electronic structure of emissive molecules and materials. Using time correlated single photon counting (TCSPC) the arrival times of emission events are recorded with high precision, yielding the photon stream. By controlling the input of light and manipulating the output photon stream we can enrich photon arrival time information with more information about the state-to-state photodynamics in an emitter. In this thesis, I develop modular advanced TCSPC methods for encoding and extracting the complex information contained within the photon stream, across different timescales and across the spectral regions of visible, near infrared (NIR), and shortwave infrared (SWIR) light. The chapter outlines are as follows: Chapter 1 is an overview of electronic structure and photophysics accompanied by the methods and hardware used. Chapter 2 details fluorescent optical cycling (FOC), a method for the simultaneous observation of both prompt and delayed emission -both during and after multiple pulsed excitation- with uncompromised fine time resolution, that ultimately provides access to multi-state photophysical rates. I demonstrate FOC (in conjunction with quantum yield measurements) for uncovering the total photophysics (all radiative, nonradiative, and intersystem crossing rates) in a dual emissive platinum complex. Coupling FOC with Decay Associated Fourier Spectroscopy (DAFS), a modular TCSPC interferometric method for spectral access) yields correlated spectral-lifetime data for this dual emitting platinum complex. Lastly, FOC used with state-of-the-art superconducting nanowire single photon detectors (SNSPDs) is used for the direct detection of shortwave infrared (SWIR) single oxygen phosphorescence sensitized by rose bengal. Chapter 3 covers shortwave infrared (SWIR) region single dot studies of ultrabright HgTe quantum dots. Two different batches of HgTe quantum dots were synthesized, one under air and the other under inert argon. The photon streams from single dots are measured, yielding single dot intensity traces and lifetimes. Chapter 4 covers Spectrally-selective Time-resolved Emission Filtering (STEF), an interferometric or Fourier filtering method for separating signals that leverages the spectral coherences of emitted photon streams. STEF demonstrated in unmixing signals for several systems, including laser scatter and emitter, mixed and spectrally overlapping emitters, imaging biological systems, and in imaging biological systems with severe spectrally overlap. STEF allows for the bypassing conventional filters in the study of complex chromophore mixtures.
■590 ▼aSchool code: 0031.
■650 4▼aPhysical chemistry
■650 4▼aMaterials science
■650 4▼aAnalytical chemistry
■650 4▼aNanoscience
■653 ▼aInterferometry
■653 ▼aPhotophysics
■653 ▼aShortwave infrared
■653 ▼aSingle molecules
■653 ▼aSpectroscopy
■690 ▼a0494
■690 ▼a0794
■690 ▼a0565
■690 ▼a0486
■71020▼aUniversity of California, Los Angeles▼bChemistry 0153.
■7730 ▼tDissertations Abstracts International▼g87-06B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360971▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
