2012 Fiscal Year Final Research Report
New signal extraction technique for a Fabry-Perot cavity that has long optical storage time.
| Project/Area Number |
22540306
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
MIYOKI Shinji 東京大学, 宇宙線研究所, 准教授 (20302680)
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| Co-Investigator(Kenkyū-buntansha) |
TELADA Souichi 独立行政法人産業技術総合研究所, 計測標準研究部門・長さ計測科, 主任研究員 (30357545)
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| Co-Investigator(Renkei-kenkyūsha) |
UCHIYAMA Takashi 東京大学, 宇宙線研究所, 助教 (60361656)
OHASHI Masatake 東京大学, 宇宙線研究所, 准教授 (80213833)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 相対論 / 重力波 / レーザー干渉計 / FP共振器 / PDH法 / NQD法 / OHD法 |
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| Research Abstract |
We verified the linear range expansion of a Pound-Drever-Hall signal by setting the modulation frequency near the FP cavity resonance and by setting the demodulation phase at the different phase from normal PDH method (NQD, OHD method). In addition to this, we found and verified that the violation of the linear property of NQD signal was much smaller than that of normal-PDH signal.
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