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The Search for Optical Cycling Molecules
The Search for Optical Cycling Molecules
The Search for Optical Cycling Molecules

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20250211152809
ISBN  
9798384039747
DDC  
539
저자명  
Lao, Guanming.
서명/저자  
The Search for Optical Cycling Molecules
발행사항  
[Sl] : University of California, Los Angeles, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
258 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
주기사항  
Advisor: Hudson, Eric R.
학위논문주기  
Thesis (Ph.D.)--University of California, Los Angeles, 2024.
초록/해제  
요약Cold molecules represent a frontier in the field of physics. Optical cycling, a process allowing repeated absorption and emission of photons by a molecule without altering its internal state, is the key to trapping and cooling molecules, as well as to quantum manipulation. However, the search for these molecules faces challenges including identifying suitable species that exhibit the required closed transition pathways for efficient optical cycling. The complexity of molecular structures, such as the electronic, vibrational and rotational properties, presents substantial hurdles in advancing this domain. To better understand these molecular physical and chemical properties, we have been working on the optical cycling properties of many different molecules, ranging from diatomic molecular ions to large neutral molecules with mass 300 amu. The results suggest that many of these candidates could potentially be laser-cooled using just a few repumping lasers, although significant progress is still required.This dissertation focuses on the search of optical cycling molecules by presenting comprehensive studies of a diatomic molecular ion (SiO+) and molecules with optical cycling centers (OCCs). Through detailed analysis utilizing molecular Hamiltonian and experimental approaches such as high-resolution laser spectroscopy and dispersed laser-induced fluorescence (DLIF) spectroscopy, we studied the key mechanisms underlying these molecules. This work elucidates the electronic, vibrational, and rotational structures essential for achieving efficient optical cycling, investigates how the non-Born-Oppenheimer (non-BO) effects, such as the Fermi resonance and Jahn-Teller effects, may affect the cycling properties. The findings of new molecular species, such as the large molecules like Ca/SrOPh-diadamantanes, offer new insights into the selection criteria for potential molecules. Our findings not only enriched the promising molecular systems for laser cooling and quantum state detection, but also provides a foundation for future exploration and application of these molecules in advancing quantum technologies and precision spectroscopy.
일반주제명  
Molecular physics
일반주제명  
Physics
일반주제명  
Quantum physics
키워드  
Cold molecules
키워드  
High-resolution laser spectroscopy
키워드  
Laser cooling
키워드  
Molecular structures
키워드  
Optical cycling
기타저자  
University of California, Los Angeles Physics 0666
기본자료저록  
Dissertations Abstracts International. 86-03B.
전자적 위치 및 접속  
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■020    ▼a9798384039747
■035    ▼a(MiAaPQ)AAI31557680
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a539
■1001  ▼aLao,  Guanming.
■24510▼aThe  Search  for  Optical  Cycling  Molecules
■260    ▼a[Sl]▼bUniversity  of  California,  Los  Angeles▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a258  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  B.
■500    ▼aAdvisor:  Hudson,  Eric  R.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Los  Angeles,  2024.
■520    ▼aCold  molecules  represent  a  frontier  in  the  field  of  physics.  Optical  cycling,  a  process  allowing  repeated  absorption  and  emission  of  photons  by  a  molecule  without  altering  its  internal  state,  is  the  key  to  trapping  and  cooling  molecules,  as  well  as  to  quantum  manipulation.  However,  the  search  for  these  molecules  faces  challenges  including  identifying  suitable  species  that  exhibit  the  required  closed  transition  pathways  for  efficient  optical  cycling.  The  complexity  of  molecular  structures,  such  as  the  electronic,  vibrational  and  rotational  properties,  presents  substantial  hurdles  in  advancing  this  domain.  To  better  understand  these  molecular  physical  and  chemical  properties,  we  have  been  working  on  the  optical  cycling  properties  of  many  different  molecules,  ranging  from  diatomic  molecular  ions  to  large  neutral  molecules  with  mass  300  amu.  The  results  suggest  that  many  of  these  candidates  could  potentially  be  laser-cooled  using  just  a  few  repumping  lasers,  although  significant  progress  is  still  required.This  dissertation  focuses  on  the  search  of  optical  cycling  molecules  by  presenting  comprehensive  studies  of  a  diatomic  molecular  ion  (SiO+)  and  molecules  with  optical  cycling  centers  (OCCs).  Through  detailed  analysis  utilizing  molecular  Hamiltonian  and  experimental  approaches  such  as  high-resolution  laser  spectroscopy  and  dispersed  laser-induced  fluorescence  (DLIF)  spectroscopy,  we  studied  the  key  mechanisms  underlying  these  molecules.  This  work  elucidates  the  electronic,  vibrational,  and  rotational  structures  essential  for  achieving  efficient  optical  cycling,  investigates  how  the  non-Born-Oppenheimer  (non-BO)  effects,  such  as  the  Fermi  resonance  and  Jahn-Teller  effects,  may  affect  the  cycling  properties.  The  findings  of  new  molecular  species,  such  as  the  large  molecules  like  Ca/SrOPh-diadamantanes,  offer  new  insights  into  the  selection  criteria  for  potential  molecules.  Our  findings  not  only  enriched  the  promising  molecular  systems  for  laser  cooling  and  quantum  state  detection,  but  also  provides  a  foundation  for  future  exploration  and  application  of  these  molecules  in  advancing  quantum  technologies  and  precision  spectroscopy.
■590    ▼aSchool  code:  0031.
■650  4▼aMolecular  physics
■650  4▼aPhysics
■650  4▼aQuantum  physics
■653    ▼aCold  molecules
■653    ▼aHigh-resolution  laser  spectroscopy
■653    ▼aLaser  cooling
■653    ▼aMolecular  structures
■653    ▼aOptical  cycling
■690    ▼a0609
■690    ▼a0599
■690    ▼a0605
■71020▼aUniversity  of  California,  Los  Angeles▼bPhysics  0666.
■7730  ▼tDissertations  Abstracts  International▼g86-03B.
■790    ▼a0031
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163919▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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