2013 Fiscal Year Final Research Report
Absolute linewidth narrowing of optical frequency comb using an ultrastable cavity
| Project/Area Number |
23560048
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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 | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
INABA Hajime 独立行政法人産業技術総合研究所, 計測標準研究部門, 主任研究員 (70356492)
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| Co-Investigator(Kenkyū-buntansha) |
HOSAKA Kazumoto 独立行政法人産業技術総合研究所, 計測標準研究部門, 主任研究員 (50462859)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 量子エレクトロニクス |
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| Research Abstract |
Laser linewidth transfer is a technique to transfer a laser spectral linewidth to other wavelengths using a high-speed controllable optical frequency comb. We have firstly succeeded in observing the clock transition spectra of 171Yb atoms in an optical lattice without an ultrastable optical cavity for the clock wavelength (578 nm). We also observe a beat note between two lasers at different wavelengths. As a result, we were able to obtain 2 x 10^-15 at 1-s averaging as the frequency instability and less than 1 Hz as the laser linewidth.
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