2013 Fiscal Year Final Research Report
Development of highly efficient deep-UV wavelength-conversion devices with walk-off compensating structures
| Project/Area Number |
23560042
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Chuo University |
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Principal Investigator |
SHOJI Ichiro 中央大学, 理工学部, 教授 (90272385)
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| Research Collaborator |
TANAKA Mitsuhiro 光学技研(株)
HARA Kenjiro 中央大学, 理工学研究科, 修士課程
MATSUMOTO Shinnosuke 中央大学, 理工学研究科, 修士課程
ONDA Tomomi 中央大学, 理工学研究科, 修士課程
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| Project Period (FY) |
2011 – 2013
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| Keywords | 紫外レーザ / 波長変換 / ウォークオフ / 常温接合 / BBO |
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| Research Abstract |
We have realized a deep-UV laser, which is attractive for high-precision machining and measurement applications, by fabricating a newly-structured highly efficient wavelength-conversion device using a new method.
One of popular UV-generating nonlinear-optical crystals, BBO, suffers from the walk-off effect which separates the generated UV beam from the input laser beam, drastically decreasing the conversion efficiency. We proposed a new structure which compensates for the walk-off effect, and fabricated the device using the room-temperature-bonding technique. We have then obtained twice the UV power of that from a bulk crystal. It is expected that one-order higher UV power can be obtained from the device with improved structures.
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