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Development of an Efficient Ultrashort Optical Pulse Generator Using Modified Fabry-Perot Modulator

Research Project

Project/Area Number 05555015
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Applied optics/Quantum optical engineering
Research InstitutionOsaka University

Principal Investigator

KOBAYASHI Tetsuro  Osaka University, Faculty of Engineering Science, Professor, 基礎工学部, 教授 (10029522)

Co-Investigator(Kenkyū-buntansha) MURAKAMI Tomohiro  Santec Corporation, Manager, 光技術研究部研究開発部, 部長(研究者)
MORIMOTO Akihiro  Faculty of Engineering Science, Associate Professor, 基礎工学部, 助教授 (00142307)
北川 勝浩  大阪大学, 基礎工学部, 助手 (20252629)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥6,800,000 (Direct Cost: ¥6,800,000)
Fiscal Year 1994: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1993: ¥5,000,000 (Direct Cost: ¥5,000,000)
KeywordsUltashort Pulses / Electrooptic Modulatoion / FP Modulator / Multiple Interference / Optical Phase Modulator / Femto Second / Tera Hertz / Sideband / 電気光学変調 / ファブリ・ペロー干渉計 / ピコ秒・サブピコ秒 / LiTaO_3 / 位相変調器
Research Abstract

We proposed a modified FP modulator and confirmed the operation. The modified FP modulator is simply formed by adding a mirror to an ordinary FP modulator at the input end. Two mirrors at the input end of the modulator forms a FP filter which is tuned to pass a input light frequency and to reflect sideband frequencies generated by the internal phase modulation.
First, we developed an efficient electrooptic phase modulator at a high frequency with quasi-velocity-matching by domain inversion of an electrooptic crystal. We made an electrooptic phase modulator of an LiTaO_3 crystal at 16.25 GHz. An experiment of deep microwave modulation was carried out with the modulator. As the result, a wide FM light of almost 3 THz width was generated. The modulation efficiency was 1.6 rad/ROO<W> which is ten times greater than the efficiency of ordinary bulk modulators.
Next, a modified FP modulator with a bulk electrooptic phase modulator was constructed and tested. As the result of the operation, ultr … More ashort pulses of less than 1 ps was generated. The output power of the modulator was 15 times larger than the output power of the ordinary FP modulator which is removed one input mirror from the modified FP modulator. The most important operation of the modulator was confirmed by this experiment.
The pulse shape and the output power and their dependence on optical biases on the experiment was well agree with theoretical ones. To stabilize the optical biases of the cavity, we made feedback systems after a digital control method and a Pound-Drever method. The experimental result shows that the stabilizing system is necessary for practical operation and that the optical biases can be well stabilized by an ordinary electronic system.
The modified FP modulator is not only a pulse generator but also a wide sideband generator. The ultimate limit of the pulse width or the sideband width is depend on the dispersion in the modulator It extends for a few tenth femtosecond and for a few tenth terahertz. This research clearly show the usefulness of the modulator in various fields. Less

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] A. MORIMOTO: "Efficient Ultrashort Optical Pulse Generation Using a Modified Fabry-Perot Modulator" in Conf. on Lasers and Electro-Optics. OSA Tech. Dig. Ser.11. 558-559 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] T. KOBAYASHI: "Ultra-High Speed Optical Device and Systems" in 5th Opto-Electronics Conf. (invited). 90-91 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] A. MORIMOTO: "Quasi-Velocity-Matched Electro-Optic Phase Modulator with Domain Inversion for Deep Microwave Modulation" in Conf. on Lasers and Electro-Optics, OSA Tech. Dig. Ser.8. 21-21 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] A.MORIMOTO: "FM Laser Operation of a Ti:Sapphire Laser" IEICE Trans.Electron.E78-C. 88-90 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] T.KOBAYASHI: "Guiding of a 1D Optical Beam with a Nanometer Diameter" in Quantum Electronics Laser Science,OSA Tech.Dig.Ser.CThI3(to be published). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] A.MORIMOTO: "3THz Sideband Generation by Electro-Optic Modulation and the Application to Ultrashort Pulse Generation" in CLEO/Pacific Rim '95. FV1(to be published). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] A.Morimoto: ""Efficient Ultrashort Optical Pulse Generation Using a Modified Fabry-Perot Modulator, "" in CLEO '93. 558-559 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] A.Morimoto: ""Quasi Velocity Matched Electrooptic Phase Modulator with Domain Inversion for Deep Microwave Modulation, "" in CLEO '94. p-21 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] T.Kobayashi: ""Ultra-High Speed Optical Device and Systems, "" in 5th Opto-Electronics Conf., (in-vited). 90-91 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] A.Morimoto: ""FM Laser Operation of a Ti : Sapphire Laser, "" Trans.IEICE J.E78-C, (1). 88-90 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] A.Morimoto: ""Electro-Optic Random Phase Plate with Domain Inversion, "" in CLEO '95, CThI3. (to be published.). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] T.Kobayashi: ""Guiding of a 1D Optical Beam with a Nanometer Diameter, "" in QELS '95, QThG41. (to be published.). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] A.Morimoto: ""3 THz Sideband Generation by Electro-Optic Modulation and the Application to Ultrashort Pulse Generation, "" in CLEO/Pacific Rim '95, FV1 (in-vited). (to be published.). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] A.Morimoto: "Quasi-Velocity-Matched Electro-optic Phase Modulator with Domain Inversion for Deep Microwave Modulation" in Conf.on Lasers and Electro-Optics,OSA Tech.Digest Series. 8. 21-21 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Kobayashi: "Ultra Hight Speed Optical Device and Systems" in 1994 Optoelectronics Conference. 90-91 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 森本朗裕: "チャープパルスの発生とその応用" レーザー研究. 22. 655-663 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] A.Morimoto: "FM Laser Operation of a Ti:Sapphire Laser" IEICE Trans.Electron.E78-C. 88-90 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] A.Morimoto: "An Electro-Optic Random Phase Plate" in Conf.on Lasers and Electro-Optics. CThI3(to be published). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Kobayashi: "Guiding of One-Dimensional Optical Beam with Nanometer Diameter" in Quantum Electronics Laser Scoences. QThG41(to be published). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] MORIMOTO Akihiro,SHIBAGAKI Akihiko,KOBAYASHI Tetsuro: "Efficient Ultrashort Optical Pulse Generation Using a Modified Fabry-Perot Modulator" Proc.1993 Conf.on Lasers & Electro-Optics. CLEO'93. 558-559 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] NISHIDA Hideyuki,KOBAYASHI Tetsuro,MORIMOTO Akihiro: "An Efficient Coherent Far-Infrared Light Source Using a Low Energy Photoelectron Beam" Proc.1993 Quantum Electronics & Laser Science. QELS'93. 254-255 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] KITAGAWA,Masahiro,UEDA,Masahito: "Squeezed spin states" Physical Review. 47. 5138-5143 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] KOBAYASHI,Tetsuro: "Ultrafast Control of Light Waves" International Workshop on Femtosecond Technology. FST'94. 19-20 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] MORIMOTO Akihiro,SARUWATARI Eido,KOBAYASHI Tetsuro: "Quasi-Velocity Matched Electrooptic Phase Modulator with Domain Inversion for Deep Microwave Modulation" Proc.1994 Conf.Lasers & Electro-Optics. CLEO'94(掲載予定). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] KAMIYA,Takeshi,KOBAYASHI,Tetsuro: "超短光パルス発生と応用" 電子情報通信学会論文誌. (掲載予定). (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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