| Project/Area Number |
03640344
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
物理学一般
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| Research Institution | THE UNIVERSITY OF TOKYO |
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Principal Investigator |
KUGA Takahiro UNIV.OF TOKYO, COLLEGE OF ARTS AND SCIENCES, ASSOCIATE PROFESSOR, 教養学部, 助教授 (60195419)
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| Co-Investigator(Kenkyū-buntansha) |
BABA Motoyoshi UNIV.OF TOKYO, INST.FOR SOLID STATE PHYSICS, RESEARCH ASSOCIATE, 物性研究所, 教務職員 (60159077)
MATSUOKA Masahiro UNIV.OF TOKYO, INST.FOR SOLID STATE PHYSICS, PROFESSOR, 物性研究所, 教授 (10013476)
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| Project Period (FY) |
1991 – 1992
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| Project Status |
Completed (Fiscal Year 1992)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1992: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1991: ¥1,700,000 (Direct Cost: ¥1,700,000)
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| Keywords | Parametric Fluorescence / Squeezed Light / Non-linear Optics / Ultrafast Spectroscopy / Two-Photon Intensity Correlation / Intensity Interference / パラメトリック増幅 / スクイーズ係数 / スワイ-ズ系数測定 |
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| Research Abstract |
We have invcstigated statistical characters of a squeezed pulse train by two-photon coincidenec counting. We have also measured a pulsc duration of a weak picosccond pulscs by using an interferometer and counting technique. The results are listed below.
1. We have performed two-photon coincidence counting measurements of a squeezed pulse train from a parametric amplifier pumped by a continuous-wave mode-locked laser. The intensity correlation function at zcro time dclay can determined by measuring the ratio of two types of the coincidences, the one within the same mode-locked pulse and the one among different pulses. lambda single mode analysis of the intensity correlation function g^<(2)> (O) is made to explain the experimental resuits.
2. We have developed a new two-photon interference scheme for measuring the coherence time and pulse width of ultrafast pulses. Experiments have been performed with the output pulses of a cw mode-locked dye laser, with results in good agreement with the conventional second-harmonic autocorrclation mcasurement.
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