Super-resolution microscopy with spatial modes of light
<p>The resolution of imaging devices is ultimately limited by the diffraction of light. This limit can be circumvented by exploiting near-field phenomena, non-linearities of the sample or specific illumination schemes, which led to the recent explosion of optical super-resolution techniques. H...
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| अन्य लेखक: | |
| स्वरूप: | थीसिस |
| भाषा: | English |
| प्रकाशित: |
2021
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| विषय: |
| _version_ | 1826305297707171840 |
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| author | da Costa Filho, JI |
| author2 | Lvovsky, A |
| author_facet | Lvovsky, A da Costa Filho, JI |
| author_sort | da Costa Filho, JI |
| collection | OXFORD |
| description | <p>The resolution of imaging devices is ultimately limited by the diffraction of light. This limit can be circumvented by exploiting near-field phenomena, non-linearities of the sample or specific illumination schemes, which led to the recent explosion of optical super-resolution techniques. However, it would be desirable to reach the nanoscale in the most general way possible, with far-field linear imaging of uniformly illuminated samples.</p>
<p>In the last few years, the answer to that came with the field of quantum-inspired super-resolution (QISR), where quantum metrological techniques were used to find novel measurement schemes that, beyond the conventional direct imaging of light, would achieve higher precisions. Interestingly, these ideas would always in some way or another involve transverse spatial modes of light. This thesis presents our work on the subject, with novel theoretical and experimental results.</p>
<p>Firstly, we develop the traditional theory of QISR, with has mostly focused on either the estimation of separation of two point sources or on geometric moments of samples. Then, we introduce our own results on optical imaging of general distributions of point sources, in a step to take QISR from toy examples to real imaging scenarios.</p>
<p>Secondly, we apply all the concepts studied on a experimental, proof-of-principle implementation of a QISR scheme dubbed Hermite-Gaussian Microscopy (HGM), which uses heterodyne detection with several Hermite-Gaussian modes as local oscillator in order to reconstruct the object sample and achieve super-resolution. We report the techniques necessary for the manipulation of spatial modes of light, as well as our results, where we demonstrated 2D imaging with twofold resolution enhancement beyond the diffraction limit.</p> |
| first_indexed | 2024-03-07T06:30:47Z |
| format | Thesis |
| id | oxford-uuid:f5ed2ee2-8cd3-4288-85c0-e3e057f8e34f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:30:47Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | oxford-uuid:f5ed2ee2-8cd3-4288-85c0-e3e057f8e34f2022-03-27T12:31:03ZSuper-resolution microscopy with spatial modes of lightThesishttp://purl.org/coar/resource_type/c_db06uuid:f5ed2ee2-8cd3-4288-85c0-e3e057f8e34fPhysicsQuantum opticsImagingOpticsEnglishHyrax Deposit2021da Costa Filho, JILvovsky, AJose Da Costa FilhoAdesso, G<p>The resolution of imaging devices is ultimately limited by the diffraction of light. This limit can be circumvented by exploiting near-field phenomena, non-linearities of the sample or specific illumination schemes, which led to the recent explosion of optical super-resolution techniques. However, it would be desirable to reach the nanoscale in the most general way possible, with far-field linear imaging of uniformly illuminated samples.</p> <p>In the last few years, the answer to that came with the field of quantum-inspired super-resolution (QISR), where quantum metrological techniques were used to find novel measurement schemes that, beyond the conventional direct imaging of light, would achieve higher precisions. Interestingly, these ideas would always in some way or another involve transverse spatial modes of light. This thesis presents our work on the subject, with novel theoretical and experimental results.</p> <p>Firstly, we develop the traditional theory of QISR, with has mostly focused on either the estimation of separation of two point sources or on geometric moments of samples. Then, we introduce our own results on optical imaging of general distributions of point sources, in a step to take QISR from toy examples to real imaging scenarios.</p> <p>Secondly, we apply all the concepts studied on a experimental, proof-of-principle implementation of a QISR scheme dubbed Hermite-Gaussian Microscopy (HGM), which uses heterodyne detection with several Hermite-Gaussian modes as local oscillator in order to reconstruct the object sample and achieve super-resolution. We report the techniques necessary for the manipulation of spatial modes of light, as well as our results, where we demonstrated 2D imaging with twofold resolution enhancement beyond the diffraction limit.</p> |
| spellingShingle | Physics Quantum optics Imaging Optics da Costa Filho, JI Super-resolution microscopy with spatial modes of light |
| title | Super-resolution microscopy with spatial modes of light |
| title_full | Super-resolution microscopy with spatial modes of light |
| title_fullStr | Super-resolution microscopy with spatial modes of light |
| title_full_unstemmed | Super-resolution microscopy with spatial modes of light |
| title_short | Super-resolution microscopy with spatial modes of light |
| title_sort | super resolution microscopy with spatial modes of light |
| topic | Physics Quantum optics Imaging Optics |
| work_keys_str_mv | AT dacostafilhoji superresolutionmicroscopywithspatialmodesoflight |