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Advances in Nonlinear Integrated Photonics
Advances in Nonlinear Integrated Photonics
Advances in Nonlinear Integrated Photonics

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20250211152655
ISBN  
9798384025115
DDC  
535
저자명  
Yoshioka, Valerie J.
서명/저자  
Advances in Nonlinear Integrated Photonics
발행사항  
[Sl] : University of Pennsylvania, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
98 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
주기사항  
Advisor: Zhen, Bo.
학위논문주기  
Thesis (Ph.D.)--University of Pennsylvania, 2024.
초록/해제  
요약Integrated photonics enables complicated optical processes to occur on the surface of a chip, dramatically reducing device footprint. By integrating materials with optical nonlinearities onto integrated photonic platforms, chip-sized devices can perform a wider range of applications, such as frequency mixing. However, material choice impacts fabrication processes and device performance, so simultaneous optimization of nonlinear efficiency, material loss, and ease of fabrication becomes difficult. In this work, we explore two different avenues to improve nonlinear integrated photonic performance beyond material limitations.One method is through exploring new photonic materials. We measured the properties of a relatively new photonic material, aluminum scandium nitride (AlScN). Its CMOS-compatibility and enhanced second-order optical nonlinearity could enable scalable production of efficient nonlinear on-chip devices. After characterizing its optical properties through free-space second harmonic generation measurements, we fabricated an AlScN-based integrated photonics platform, demonstrating its use in an integrated electro-optic phase shifter. Though its electro-optic response was smaller than expected, recent theoretical calculations as well as improvements in fabrication methods provide a path towards improved performance in AlScN-based photonics. Another method is using photonic design to compensate for undesirable material properties. As one example, many optical materials experience significant loss at longer wavelengths, making far infrared (FIR) and terahertz (THz) sources difficult to produce. We simulated difference frequency generation (DFG) of FIR/THz light in thin film lithium niobate (TFLN) waveguides. By adjusting the poling period to control the phase matching condition, we achieved surface emission DFG to encourage immediate emission of the FIR/THz light. In this way, we can efficiently generate long wavelengths while avoiding high material loss. We also considered methods to enable beam steering of the emitted light for more flexibility in applications.By exploring two avenues in overcoming material limitations, we can push the boundaries of efficiency and capability in current devices and move towards improved performance in nonlinear integrated photonics.
일반주제명  
Optics
일반주제명  
Physical chemistry
일반주제명  
Materials science
일반주제명  
Electrical engineering
키워드  
AlScN
키워드  
Electro-optic response
키워드  
Far infrared source
키워드  
Frequency conversion
키워드  
Integrated photonics
키워드  
Nonlinear optics
기타저자  
University of Pennsylvania Physics and Astronomy
기본자료저록  
Dissertations Abstracts International. 86-02B.
전자적 위치 및 접속  
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MARC

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■035    ▼a(MiAaPQ)AAI31487426
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a535
■1001  ▼aYoshioka,  Valerie  J.
■24510▼aAdvances  in  Nonlinear  Integrated  Photonics
■260    ▼a[Sl]▼bUniversity  of  Pennsylvania▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a98  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-02,  Section:  B.
■500    ▼aAdvisor:  Zhen,  Bo.
■5021  ▼aThesis  (Ph.D.)--University  of  Pennsylvania,  2024.
■520    ▼aIntegrated  photonics  enables  complicated  optical  processes  to  occur  on  the  surface  of  a  chip,  dramatically  reducing  device  footprint.  By  integrating  materials  with  optical  nonlinearities  onto  integrated  photonic  platforms,  chip-sized  devices  can  perform  a  wider  range  of  applications,  such  as  frequency  mixing.  However,  material  choice  impacts  fabrication  processes  and  device  performance,  so  simultaneous  optimization  of  nonlinear  efficiency,  material  loss,  and  ease  of  fabrication  becomes  difficult.  In  this  work,  we  explore  two  different  avenues  to  improve  nonlinear  integrated  photonic  performance  beyond  material  limitations.One  method  is  through  exploring  new  photonic  materials.  We  measured  the  properties  of  a  relatively  new  photonic  material,  aluminum  scandium  nitride  (AlScN).  Its  CMOS-compatibility  and  enhanced  second-order  optical  nonlinearity  could  enable  scalable  production  of  efficient  nonlinear  on-chip  devices.  After  characterizing  its  optical  properties  through  free-space  second  harmonic  generation  measurements,  we  fabricated  an  AlScN-based  integrated  photonics  platform,  demonstrating  its  use  in  an  integrated  electro-optic  phase  shifter.  Though  its  electro-optic  response  was  smaller  than  expected,  recent  theoretical  calculations  as  well  as  improvements  in  fabrication  methods  provide  a  path  towards  improved  performance  in  AlScN-based  photonics. Another  method  is  using  photonic  design  to  compensate  for  undesirable  material  properties.  As  one  example,  many  optical  materials  experience  significant  loss  at  longer  wavelengths,  making  far  infrared  (FIR)  and  terahertz  (THz)  sources  difficult  to  produce.  We  simulated  difference  frequency  generation  (DFG)  of  FIR/THz  light  in  thin  film  lithium  niobate  (TFLN)  waveguides.  By  adjusting  the  poling  period  to  control  the  phase  matching  condition,  we  achieved  surface  emission  DFG  to  encourage  immediate  emission  of  the  FIR/THz  light.  In  this  way,  we  can  efficiently  generate  long  wavelengths  while  avoiding  high  material  loss.  We  also  considered  methods  to  enable  beam  steering  of  the  emitted  light  for  more  flexibility  in  applications.By  exploring  two  avenues  in  overcoming  material  limitations,  we  can  push  the  boundaries  of  efficiency  and  capability  in  current  devices  and  move  towards  improved  performance  in  nonlinear  integrated  photonics.
■590    ▼aSchool  code:  0175.
■650  4▼aOptics
■650  4▼aPhysical  chemistry
■650  4▼aMaterials  science
■650  4▼aElectrical  engineering
■653    ▼aAlScN
■653    ▼aElectro-optic  response  
■653    ▼aFar  infrared  source
■653    ▼aFrequency  conversion
■653    ▼aIntegrated  photonics
■653    ▼aNonlinear  optics
■690    ▼a0752
■690    ▼a0544
■690    ▼a0794
■690    ▼a0494
■71020▼aUniversity  of  Pennsylvania▼bPhysics  and  Astronomy.
■7730  ▼tDissertations  Abstracts  International▼g86-02B.
■790    ▼a0175
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17163340▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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