| Project/Area Number |
09555012
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Osaka University |
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Principal Investigator |
KOBAYASHI Tetsuro Professor, Graduate School of Engineering Science, Osaka University, 大学院・基礎工学研究科, 教授 (10029522)
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| Co-Investigator(Kenkyū-buntansha) |
MORIMOTO Akihiro Professor Faculty of Scientific Engineering, Ritsumeikan University, 理工学部, 教授 (00142307)
TAKAHARA Junichi Research Assistant, Graduate School of Engineering Science, Osaka University, 大学院・基礎工学研究科, 助手 (90273606)
KITAGAWA Masahiro Associate Professor, Graduate School of Engineering Science, Osaka University, 大学院・基礎工学研究科, 助教授 (20252629)
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| Project Period (FY) |
1997 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1998: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1997: ¥4,200,000 (Direct Cost: ¥4,200,000)
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| Keywords | Wavelength domain multiplex (WDM) / Ultrafast / Electro-optic deflector / Traveling phase grating / Optical frequency shifter / Optical synthesizer / Optical sideband / Ultrashort optical pulses / 周期分極反転 |
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| Research Abstract |
We have been developing a quasi-velocity-matched (QVM) electro-optic (EO) modulator, which can generate teraherz sidebands, using periodic domain inversion of an electro-optic crystal. Recently, we proposed the new BO deflector and frequency shifter utilizing traveling phase grating induced by slant-crossing the direction of QVM-domain inversion and that of light propagation (Jpn patent No. 2802366).
In this research, we have developed this newly proposed BO deflector and frequency shifter using a LiTaO_3 EO crystal. As results, functions of deflection and frequency shift have been confirmed experimentally at very high frequency 16GHz, which can never obtained by an acousto-optic (AO) deflector.
In addition, 48GHz unidirectional deflection (the world fastest record), has been successfully carried out.
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