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OPTICAL Stark EFFECTS AND OPTICAL NONLINEARITY AT LOW-DIMENSIONALLY CONFINED EXCITONS IN LAYERED CRYSTALS

Research Project

Project/Area Number 02452043
Research Category

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

Allocation TypeSingle-year Grants
Research Field 固体物性
Research InstitutionOsaka City University of Science

Principal Investigator

KARASAWA Tsutomu  Osaka City University, Department of Physics, Associate Professor, 理学部, 助教授 (90106336)

Co-Investigator(Kenkyū-buntansha) IIDA Takeshi  Osaka City University, Department of Physics, Professor, 理学部, 教授 (80047191)
AKAI Ichirou  Osaka City University, Department of Physics, Research Associate, 理学部, 助手 (20212392)
KOMATSU Teruo  Osaka City University, Department of Physics, Professor, 理学部, 教授 (90047134)
Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥6,700,000 (Direct Cost: ¥6,700,000)
Fiscal Year 1992: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1991: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1990: ¥5,100,000 (Direct Cost: ¥5,100,000)
KeywordsLayered Crystals / Bismuth Iodide / Stacking Fault Exciton / Optical Stark Effect / Nonlinear Electric Susceptibility / Quantum Confined Effect / Degenerate Four-Wave-Mixing / Dephasing Process
Research Abstract

In this study, several mechanisms of nonlinear optical responses have been clarified especially in the low-dimensionally confined exciton systems at stacking disorders in layered crystals. A theoretical research on basic processes in a highly excited exciton system has been done. Main results obtained are as follows: 1. Transient absorption spectra at the qusi two-dimensional exciton system localized at specific stacking fault in BiI_<delta> have been investigated up to the pico second time region by means of the pump-probe method. (1) The optical Stark effect by the pump-field was clearly observed. The spectral change was analyzed on the basis of "dressed exciton model". As a result, extraordinarily large non-linear susceptibility was obtained reflecting a large electric-dipole moment in this system. (2) It turns out that even after the pump-field, really excited high-density excitons interact with each other resulting in the spectral change characteristic in the two-dimensional syste … More m. (3) From the degenerate four-wave-mixing measurements, the dephasing mechanism was made clear: under the low excitation, the intra-band LA-phonon scattering governs the dephasing process, while for the high excitation, exciton-exciton scattering becomes dominant in the process. (4) Other nonlinear optical responses: the bi-exciton state coexists with the high density exciton phase, and the occurrence of bistability with respect to the density was observed.
2. Besides the above results, we observed the induced Raman lines in BiI_3, and SBI_3 crystals. Furthermore, we found that under the hydrostatic pressure, a new exciton transition appears in SBI_3, which gives a new information on quantum confined exciton states.
. We studied an electron-hole system in a direct gap semiconductor which is coherently excited by a high-intensity laser. Using a mean-field approximation, we have showed that the many body effects via the screened Coulomb interactions bring about the density bistability with respect to the frequency of the laser field, in which a low density state is regarded as the exciton gas and a high density state is the BCS state of electron-hole Cooper-pairs. Less

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (54 results)

All Other

All Publications (54 results)

  • [Publications] S.Takeyama: "Magneto-optical effects of exciton in Bil_3 crystals under pulsed high magnetic fields.I.Indirect and direct excitons" Physical Review. B41. 4513-4523 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.Iida: "Study of polaron effects on optical processes in a simple model system" Reviews of Solid State Science. 4. 199-208 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] I.Akai: "Optical Stark iffects in the multiple exciton states at a stacking-fault plane in Bil_3 crystals" Physical Review. B43. 4484-4487 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.Karasawa: "Ultrafast Nonlinear Optical Response and High Density Excitation Effects of the Stacking Fault Exciton in Bil_3" Appl.Phys.A.53. 480-490 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.Karasawa: "Nonlinear OpticalProperties of Bil_3 Crystals" Nonlinear Optics. 1. 51-59 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.Kawai: "Observation of propagation of exciton-polaritons along stcking fault plane in layered crystal Bil_3" J.Luminescence. 48/49. 721-724 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] K.Watanabe: "Absorption-spectral-shape analysis of the band-edge exciton in a Bil_3 crystal based on the exciton-phonon interaction" Physical Review. B43. 14329-14332 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] K.Oimatsu: "Exciton polariton effects in an optical waveguide with a quantum well" J.Luminescence. 48/49. 713-716 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] I.Akai: "Optical Stark effects on the stacking fault excitons in Bil_3" International Journal of Nonlinear Optical Physics. 1. 311-337 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] I.Akai: "Picosecond time resolved spectra of the optical Stark effects on the stacking fault excitons in Bil_3 crystals" Mol.Cryst.Liq.Cryst.218. 25-30 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M.Ichida: "Dephasing and relazation processes on the stacking fault exciton in Bil_3 under high density excitation" Mol.Cryst.Liq.Cryst.218. 31-36 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Kurisu: "Pressure induced quantum confined excitons in layered metal tri-Iodide crystals" J.J.Appl.Phys.Suppl.32-1. 285-287 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.Kawai: "Energy transfer and relaxation mechanism among exciton states in layered crystal Bil_3.I.Energy Transfer by Triplet excitons" J.Phys.Soc.Jpn. 62. 822-831 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Kurisu: "Hydrostatic pressure effects on the exciton and exciton-phonon interaction in Bil_3 crystals" J.Phys.Soc.Jpn. 62. 1048-1056 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.Komatsu: "Excitons localized in mesoscopic domains produced by stacking fault in Bil_3" Mol.Cryst.Llq.Cryst.218. 37-42 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] D.A.Donatti: "Magneto optical properties of F^<2+> center in KCl:SH^-" phys.Stat.sol.(b). (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.Iida: "Density bistability in an interacting electron-hole system in coherently excited semiconductors" Physical Review. B47. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M.lchida: "Dephasing processes on the stacking-fault excitons in Bil_3" Physical Review. B47. 1474-1482 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] S. Takeyama: "Magneto-optical effects of exciton in BiI_3 crystals under pulsed high magnetic fields. I. indirect and direct excitons" Physical Review. B 41. 4513-4523 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T. Iida: "Study of polaron effects on optical processes in a simple model system" Reviews of Solid State Science. 4. 199-208 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] I. Akai: "Optical Stark effects in the multiple exciton states at a stacking-fault plane in BiI_3 crystals" Physical Review. B 43. 4484-4487 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T. Karasawa: "Ultrafast Nonlinear Optical Response and High Density Excitation Effects of the Stacking Fault Exciton in BiI_3" Appl. Phys. A 53. 480-490 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T. Karasawa: "Nonlinear OpticalProperties of BiI_3 Crystals" Nonlinear Optics. 1. 51-59 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T. Kawai: "Observation of propagation of exciton-polaritons along stacking fault plane in layered crystal BiI_3" J. Luminescence. 48/49. 721-724 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] K. Watanabe: "Absorption-spectral-shape analysis of the band-edge exciton in a BiI_3 crystal based on the exciton-phonon interaction" Physical Review. B 43. 14329-14332 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] K. Oimatsu: "Excitonic polariton effects in an optical waveguide with a quantum well" J. Luminescence. 48/49. 721-724 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] I. Akai: "Optical Stark effects on the stacking fault excitons in BilI_3" International Journal of Nonlinear Optical Physics. 1. 311-337 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] I. Akai: "Picosecond time resolved spectra of the optical Stark effects on the stacking fault excitons in BiI_3 crystals" Mol. Cryst. Liq. Cryst.218. 25-30 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M. Ichida: "Dephasing and realization processes on the stacking fault exciton in BiI_3 under high density excitation" Mol. Cryst. Liq. Cryst.218. 31-36 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H. Kurisu: "Pressure induced quantum confined excitons in layered metal tri-Iodide crystals" J. J. Appl. Phys. Suppl.32-1. 285-287 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T. Kawai: "Energy transfer and relaxation mechanism among exciton states in layered crystal BiI_3 I. Energy Transfer by Triplet excitions" J. Phys. Soc. Jpn. 62. 822-831 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H. Kurisu: "Hydostatic pressure effects on the exciton and exciton-phonon interaction in BiI_3 crystals" J. Phys. Soc. Jpn.62. 1048-1056 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T. Komatsu: "Excitons localized in mesoscopic domains produced by stacking fault in BiI_3" Mol. Cryst. Liq. Cryst.218. 37-42 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] D. A. Donatti: "Magneto optical properties of F^<2+> center in KCI:SH^-" phys. stat. sol. (b). (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T. Iida: "Density bistability in an interacting electron-hole system in coherently excited semiconductors" Physical Review. B 47. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] M. Ichida: "Dephasing processes on the stacking-fault excitons in BiI_3" Physical Review. B 47. 1474-1482 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] H.Kurisu,T.Tanaka,T.Karasawa,and T.Komatsu: "Pressure induced quantum confined excitons in layered metal tri-lodide crystals" J.J.Appl.Phys.32. 285-287 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Kawai,M.Ichida,T.Karasawa,and T.Komatsu: "Energy transfer and relaxation mechanism among exciton states in layered crystal BiI_3.I.Energy Transfer by Triplet excitons" J.Phys.Soc,Jpn. 62. 822-831 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] H.Kurisu,T.Komatsu,and T.Karasawa: "Hydrostatic pressure effects on the exciton and exciton-phonon interaction in BiI_3 crystals" J.Phys.Soc.Jpn. 62. 1048-1056 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] D.A.Donatti,M.A.Aegerter and T.lida: "Magneto optical properties of F^<2+> center in KCl:SH^-" phys.stat.sol.(b). (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Iida,Y.Hasegawa,T.Higashimura,and M.Aihara: "Density bistability in an interacting electron-hole system in coherently excited semiconductors" Physical Review B. 45. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] M.Ichida,T.Karasawa,and T.Komatsu: "Dephasing processes on the stacking-fault excitons in Bil_3" Physical Review B. 47. 1474-1482 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] I.Akai,K.Nakajima,T.Karasawa,M.Ichida and T.Komatsu: "PICOSECOND TIME RESOLVED SPECTRA OF THE OPTICAL STARK EFFECTS ON THE STACKING FAULT EXCITONS IN BiI_3 CRYSTALS" Mol.Cryst.and Liq.Cryst.(1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Ichida,T.Kawai,T.Karasawa and T.Komatsu: "DEPHASING AND RELAXATION PROCESSES ON THE STACKING FAULT EXCITON IN BiI_3 UNDER HIGH DENSITY EXCITATION" Mol.Cryst.and Liq.Cryst.(1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Ichida,T.Karasawa and T.Komatsu: "DEPHASING PROCESSES ON THE STACKING FAULT EXCITONS IN BiI_3" Phys.Rev.B.

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Iida,and Y.Hasegawa: "A POSSIBILITY OF BISTABLE STATES IN OPTICALLY HIGHLY EXCITED SEMICONDUCTORS" J.Phys.:Condens.Matter.

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Iida,and Y.Hasegawa: "EXCITONIC EFFECTS ON THE LIGHT PROPAGATION IN A WAVEGUIDE WITH A QUANTUM WELL A OUANTUM WELL" J.Phys.:Condens.Matter.

    • Related Report
      1991 Annual Research Report
  • [Publications] "EXCITONS LOCALIZED IN MESOSCOPIC DOMAINS PRODUCED BY STACKING FAULT IN BiI_3" Mol.Cryst.and Liq.Cryst.(1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Karasawa,I.Akai and T.Komatsu: "NONLINEAR OPTICAL PROPERTIES OF Bil3 CRYSTALS" Nonlinear Optics. 1. (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] I.Akai,T.Karasawa,T.Komatsu and Y.Kaifu: "OPTICAL STARKK EFFECTS IN THE MULTIPLE EXCITON STATES AT A STACKING FAULT PLANE IN Bil3 CRYSTALS" Physical Revies B. 43. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] I.Akai,T.Karasawa and T.Komatsu: "OPTICAL STARK EFFECTS AON THE STACKING FAULT EXCITONS IN Bil3" Journal of Nonlinear Optics. in press (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Kawai,S.Shimanuki,T.Karasawa,I.Akai,T.Iida and T.Komatsu: "OBSERVATION OF PROPAGATION OF EXDITONーPOLARITON AONG STACKING FAULT PLANE IN LAYERED CRYSTAL Bil3" Journal of Luminescence. in press (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Oimatsu,T.Iida,H.Nishimura,K.Ogawa and T.Katsuyama: "EXCITONIC POLARITON EFFECTS IN AN OPTICAL WAVEGUIDE WITH A QUANTUM WELL" Journal of Luminescence. in press (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Iida and T.Higashimura: "SUDY OF POLARON EFFECTS ON OPTICAL PROCESSES IN A SIMPLE MODEL SYSTEM" Reviews of Solid State Science. 4. 199-208 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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