2009 Fiscal Year Final Research Report
Generation of optical nano-fields by photonic-crystal lasers and their applications
| Project/Area Number |
20760222
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Kyoto University |
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Principal Investigator |
SAKAI Kyosuke Kyoto University, 次世代開拓研究ユニット, 助教 (00456831)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 径偏光ビーム / z偏光 / 超解像 |
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| Research Abstract |
We investigated the details of the optical field generated by the radially polarized laser beam, which was expected to produce tiny sub-wavelength sized field. We have found that a narrow-width annular beam indeed produced a tiny focus, which had a half-wavelength width and long depth of focus more than several wavelengths. The resultant focus, which consists of so-called "Z polarization", is expected to have a big impact on a range of applications, such as laser processing, sensing and super-resolution microscopy.
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