Presentations at International Conferences

92. Emission of continuous terahertz wave using exciton interference
O. Kojima
The 7th International Conference on Electronics, Communications and Networks
2017.11, Hualien, Taiwan

91. Generation of continuous terahertz wave by differential-frequency-mixing in a GaAs/AlAs multiple quantum well
O. Kojima, Y. Tarui, T. Kita, A. Majeed, E. Clark, P. Ivanov, R. Hogg
Nanophotonics and Micro/Nano Optics International Conference 2017
2017. 9, Barcelona, Spain

90. THz wave generation through 2nd order non-linear excitonic effects in GaAs/AlAs MQWs at room temperature
A. Majeed, P. Ivanov, B. Stevens, D. Childs, O. Kojima, R. A. Hogg
Photonic West 2017
2017. 2, San Francisco, United States

2016

89. Variation of terahertz wave characteristics due to covering InAs quantum dots by nitrogen atoms
O. Kojima, R. Izumi, T. Kita
Asian Conference on Nanoscience & Nanotechnology 2016
2016. 10, Sapporo, Japan

88. Photo-emission of cyanine molecule thin films on Si substrate due to inorganic-organic energy transfer
Y. Ito, O. Kojima, T. Kita, Y. Shim
Asian Conference on Nanoscience & Nanotechnology 2016
2016. 10, Sapporo, Japan

87. Ultrafast optical devices based on exciton quantum beats
O. Kojima
Energy Materials Nanotechnology Meeting on Optoelectronics
2016. 4, Phuket, Thailand

2015

86. Dephasing mechanism of exciton quantum beat oscillation
O. Kojima
Energy Materials Nanotechnology Meeting on Ultrafast Research
2015.11, Las Vegas, USA

85. Decrease in photoluminescence decay rate in InAs quantum dots coupling with In nanoparticles due to increase in excitation power
O. Kojima, T. Taji, T. Kita, C. Y. Jin, J. Yuan, R. Nötzel
2nd International Conference on Enhanced Spectroscopies, ICES 2015
2015.10, Messina, Italy

84. Substrate removal and capillary bonding of a quantum beat sample
A. Majeed, P. Ivanov, D. Childs, E. Clarke, O. Kojima, R. Hogg
8th UK, Europe, China conference on Millimetre Waves and Terahertz Technologies, UCMMT 2015
2015. 9, Cardiff, United Kingdom

83. Effects of homogeneous and inhomogeneous broadenings of excitons on amplitude of exciton quantum beats
O. Kojima, T. Kita
17th International Conference on Modulated Semiconductor Structures, MSS17 2015
2015. 7, Sendai, Japan

82. Excitation of cyanine dye thin film via energy transfer from a Si substrate
Y. Ito, O. Kojima, T. Kita, Y. Shim
17th International Conference on Modulated Semiconductor Structures, MSS17 2015
2015. 7, Sendai, Japan

2014

81. Ultrafast optical switch based on quantum beat oscillation in a GaAs/AlAs multiple quantum well
O. Kojima, T. Kita, K. Akahane
International symposium on recent progress of photonic devices and materials 2014
2014. 11, Kobe, Japan

80. Fabrication and characterization of cyanine dye thin films grown by a layer-by-layer method
J. Nagauchi, O. Kojima, T. Kita, Y. Shim
International symposium on recent progress of photonic devices and materials 2014
2014. 11, Kobe, Japan

79. Opening Remark
O. Kojima
International symposium on recent progress of photonic devices and materials 2014
2014. 11, Kobe, Japan

78. Thermal enhancement of exciton quantum beat in a GaAs/AlAs multiple quantum well
O. Kojima, T. Kita, K. Akahane
6th Szeged International Workshop on Advances in Nanoscience 2014
2014. 10, Szeged, Hungary

77. Low-power pulse modulation based on exciton quantum beat in a GaAs/AlAs multiple quantum well
O. Kojima, T. Kita, K. Akahane
UK Semiconductors 2014
2014. 7, Sheffield, UK

2013

76. Fabrication and characterization of bilayer thin films of cyanine dyes by a layer-by-layer method towards realization of ultrafast response device with high repetition rate
O. Kojima, R. Fujii, T. Kita
The 12th European Conference on Molecular Electronics, ECME 2013
2013. 9, London, UK

75. Optical characteristics of quantum dot ensembles grown by using the strain compensation technique
O. Kojima, T. Kita, K. Akahane
Collaborative Conference on 3D & Materials Research, CC3DMR 2013
2013. 6, Jeju, Korea

74. Anisotropic intraband relaxation in a multistacked quantum dot ensemble
O. Kojima, H. Tanaka, T. Kita, K. Akahane
The 40th International Symposium on Compound Semiconductors, ISCS 2013
2013. 5, Kobe, Japan

2012

73. Control of energy transfer rate towards ultrafast response due to changing number ratio of energy donor-acceptor cyanine dye molecules
O. Kojima, R. Fujii, T. Kita
Sixth International Meeting on Molecular Electronics
2012.12, Grenoble, France

72. Effect of fifth nonlinear polarization on exciton Rabi oscillation in GaAs/AlxGa1-xAs double heterostructure thin films
O. Kojima, K. Goi, T. Kita, T. Isu
European Optical Society Annual Meeting 2012
2012. 9, Aberdeen, UK

71. Control of response of exciton polariton confined in GaAs thin films by controlling pump and probe pulses
O. Kojima, S. Ohta, T. Kita, T. Isu
Photon12 IOP's premier conference in optics and photonics
2012. 9, Durham, UK

70. Ultrafast photonic Mach-Zehnder switch using quantum dot vertical cavity structures
O. Wada, C. Y. Jin, O. Kojima, M. Hopkinson, R. F. Oulton, S. Gennaro, K. Akahane, T. Kita, R. A. Hogg
UK Semiconductors
2012. 7, Sheffield, UK

69. Excitation effects of confined exciton polariton on pulse shape propagating in GaAs thin films
O. Kojima, S. Ohta, T. Kita, T. Isu
10th International Conference on Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials, EXCON 2012
2012. 7, Groningen, the Netherlands

68. Strong electron-hole correlation in bound exciton in nitrogen d-doped GaAs
Y. Harada, T. Kubo, T. Inoue, O. Kojima, T. Kita
10th International Conference on Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials, EXCON 2012
2012. 7, Groningen, the Netherlands

67. Carrier dynamics in multiple stacked quantum dots under spacer layer excitation conditions
J. Tasaki, O. Kojima, T. Kita, K. Akahane
Fifth International Conference on Optical, Optoelectronic and Photonic Materials and Applications, ICOOPMA 12
2012. 6, Nara, Japan

2011

66. Effects of fifth-order nonlinear polarization on optical control of excitonic states confined in GaAs thin films by using Rabi oscillation
K. Goi, O. Kojima, T. Kita, T. Isu
Workshop on Innovation and Pioneering Technology 2011, WINPTech 2011
2011.12, Kobe, Japan

65. Switching characteristics of exciton response in GaAs thin films
S. Ohta, O. Kojima, T. Kita, T. Isu
Workshop on Innovation and Pioneering Technology 2011, WINPTech 2011
2011.12, Kobe, Japan

64. Effect of control of number ratio of energy donor-acceptor cyanine dye molecules in thin films on Förster energy transfer
R. Fujii, O. Kojima, T. Kita
Workshop on Innovation and Pioneering Technology 2011, WINPTech 2011
2011.12, Kobe, Japan

63. Effect of capping layer growth on bound exciton luminescence in nitrogen d-doped GaAs
Y. Harada, T. Kubo, T. Inoue, O. Kojima, T. Kita
2011 International Conference on Solid State Devices and Materials, SSDM 2011
2011. 9, Nagoya, Japan

62. Photoluminescence dynamics of spacer layer carriers in multi stacked quantum dots
O. Kojima, T. Kita, K. Akahane
12th International Conference on Optics of Excitons in Confined Systems, OECS 12
2011. 9, Paris, France

61. Interaction of quantized exciton polaritons with nonresonant pump pulse in GaAs thin flims
S. Ohta, O. Kojima, T. Kita, T. Isu
12th International Conference on Optics of Excitons in Confined Systems, OECS 12
2011. 9, Paris, France

60. Optical phase shifter using quantum dots in a vertical cavity
C. Y. Jin, O. Kojima, T. Kita, O. Wada, M. Hopkinson
23rd International Conference on Indium Phosphide and Related Materials, IPRM 2011
2011. 5, Berlin, Germany

59. Diamagnetic shift of exciton bound to the nitrogen pairs in GaAs
Y. Harada, T. Kubo, T. Inoue, O. Kojima, T. Kita
38th International Symposium on Compound Semiconductors, ISCS 2011
2011. 5, Berlin, Germany

2010

58. Biexcitonic contribution to nonlinear optical response of excitons in GaAs/AlAs superlattices
T. Yamashita, O. Kojima, T. Kita, K. Akahane
Workshop on Information, Nano and Photonics Technology 2010, WINPTech 2010
2010.12, Kobe, Japan

57. Effect of spectral width of probe pulses on response of excitons confined in GaAs thin films
S. Ohta, O. Kojima, T. Kita, T. Isu
Workshop on Information, Nano and Photonics Technology 2010, WINPTech 2010
2010.12, Kobe, Japan

56. Bound biexciton luminescence in nitrogen d-doped GaAs
Y. Harada, O. Kojima, T. Kita, O. Wada
9th International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials, EXCON 2010
2010. 7, Brisbane, Australia

55. Excitation power dependence of nonlinear optical response of excitons in GaAs/AlAs superlattices
T. Yamashita, O. Kojima, T. Kita, O. Wada, K. Akahane
9th International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials, EXCON 2010
2010. 7, Brisbane, Australia

54. Intraband relaxation process in highly stacked quantum dots
O. Kojima, M. Mamizuka, T. Kita, O. Wada, K. Akahane
9th International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials, EXCON 2010
2010. 7, Brisbane, Australia

53. Intraband relaxation of photoexcited carriers in multiple stacked quantum dots and quantum dot chains
O. Kojima, M. Mamizuka, T. Kita, O. Wada, K. Akahane
35th IEEE Photovoltaic Specialist Conference, PVSC 35
2010. 6, Honolulu, USA

52. Energy band structure design for quantum-dot, intermediate-band solar cells
W. Hu, T. Inoue, T. Kita, O. Kojima, O. Wada
35th IEEE Photovoltaic Specialist Conference, PVSC 35
2010. 6, Honolulu, USA

51. All-optical switch using InAs quantum dots in a vertical cavity
C. Y. Jin, O. Kojima, T. Inoue, S. Ohta, T. Kita, O. Wada, M. Hopkinson, K. Akahane
22nd International Conference on Indium Phosphide and Related Materials, IPRM 2010
2010.5-6 Takamatsu, Japan

50. Propagation velocity of excitonic polaritons confined in GaAs thin films
O. Kojima, S. Watanabe, T. Kita, O. Wada, T. Isu
37th International Symposium on Compound Semiconductors, ISCS 2010
2010.5-6 Takamatsu, Japan

49. Interaction between conduction-band edge and nitrogen-related localized levels in nitrogen d-doped GaAs
Y. Harada, O. Kojima, T. Kita, O. Wada
37th International Symposium on Compound Semiconductors, ISCS 2010
2010.5-6 Takamatsu, Japan

48. Energy band structure and half-filled condition in the quantum-dots intermediate band solar cells
W. Hu, T. Inoue, T. Kita, O. Kojima, O. Wada
37th International Symposium on Compound Semiconductors, ISCS 2010
2010.5-6, Takamatsu, Japan

47. Self-assembled InAs quantum dots within a vertical cavity structure for all-optical switching devices
C. Y. Jin, O. Kojima, T. Inoue, T. Kita, O. Wada, M. Hopkinson, K. Akahane
Photonics West 2010
2010. 1, San Francisco, USA

46. Vertically-stacked InAs quantum dots for polarization-independent semiconductor optical amplifiers
T. Inoue, M. Asada, O. Kojima, T. Kita, O. Wada
Photonics West 2010
2010. 1, San Francisco, USA

2009

45. Energy band structure for intermediate band solar cells
W. Hu, T. Kita, O. Kojima, O. Wada
Workshop on Information, Nano and Photonics 2009, WINPTech 2009
2009.12, Kobe, Japan

44. Temperature dependent carrier tunneling in self-assembled InGaAs quantum dots with a dilute nitride quantum-well injector
S. Ohta, C. Y. Jin, M. Hopkinson, O. Kojima, T. Kita, O. Wada
Workshop on Information, Nano and Photonics 2009, WINPTech 2009
2009.12, Kobe, Japan

43. Optical nonlinearity of InAs quantum dots within a vertical cavity structure for all-optical switching devices
C. Y. Jin, O. Kojima, T. Inoue, T. Kita, O. Wada, M. Hopkinson, K. Akahane
Workshop on Information, Nano and Photonics 2009, WINPTech 2009
2009.12, Kobe, Japan

42. Effective dipole moments of excitons in GaAs thin films
T. Yamashita, O. Kojima, T. Kita, O. Wada, T. Isu
Workshop on Information, Nano and Photonics 2009, WINPTech 2009
2009.12, Kobe, Japan

41. Direct impurity doping into self-assembled InAs/GaAs quantum dots
Workshop on Information, Nano and Photonics 2009, WINPTech 2009
2009.12, Kobe, Japan
K. Sasayama, T. Inoue, O. Kojima, T. Kita, O. Wada

40. Effects of in-plain exciton transfer on intraband relaxation process in stacked InAs quantum dots
M. Mamizuka, O. Kojima, T. Kita, O. Wada, K. Akahane
Workshop on Information, Nano and Photonics 2009, WINPTech 2009
2009.12, Kobe, Japan

39. Thermal effects on exciton dynamics in quantum dot chains
O. Kojima, H. Nakatani, T. Kita, O. Wada, K. Akahane
International Symposium on Quantum Nanophotonics and Nanoelectronics, ISQNN 2009
2009.11 Tokyo, Japan

38. Enhancement of optical nonlinearity by spatially expanded excitons in GaAs/AlAs multiple quantum wells
O. Kojima, T. Kita, O. Wada, K. Akahane
16th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures, EDISON 16
2009. 8, Montpellier, France

37. Spatial coherence effect on transient response of confined excitons in GaAs thin films
O. Kojima, S. Watanabe, T. Kita, O. Wada, T. Isu
14th International Conference on Modulated Semiconductor structures, MSS 14
2009. 7, Kobe, Japan

36. All-optical switching using InAs/GaAs quantum dots within a vertical cavity structure
C. Y. Jin, O. Kojima, T. Kita, O. Wada, M. Hopkinson, K. Akahane
14th International Conference on Modulated Semiconductor structures. MSS 14
2009. 7, Kobe, Japan

35. Polarization controlled emission from stacked InAs quantum dots
T. Inoue, N. Yasuoka, O. Kojima, T. Kita, O. Wada
14th International Conference on Modulated Semiconductor structures, MSS 14
2009. 7 Kobe, Japan

34. Magnetic-field control of exciton fine structure splitting in nitrogen d-doped GaAs
Y. Harada, O. Kojima, T. Kita, O. Wada
14th International Conference on Modulated Semiconductor structures, MSS 14
2009. 7, Kobe, Japan

33. Resonant enhancement of excitonic photoluminescence via biexciton process in stacked InAs quantum dots
M. Mamizuka, O. Kojima, T. Kita, O. Wada, K. Akahane
14th International Conference on Modulated Semiconductor structures, MSS 14
2009. 7, Kobe, Japan

2008

32. Ultrafast exciton control toward all-optical switching devices
O. Kojima, T. Kita, O. Wada, T. Isu
Workshop on Information, Nano and Photonics Technology 2008, WINPTech 2008
2008.11, Kobe, Japan

31. Influence of indium segregation on optical properties in InAs/GaAs quantum dots
T. Inoue, H. Mizuno, M. Mamizuka, O. Kojima, T. Kita, O. Wada
15th International Conference on Molecular Beam Epitaxy, MBE 2008
2008. 8, Vancouver, Canada

30. Transient reflectivity response with negative time delay caused by femtosecond pulse propagation in GaAs thin films
S. Watanabe, O. Kojima, T. Kita, O. Wada, T. Isu
3rd International Conference on Optical, Optoelectronic and Photonic Materials and Applications, ICOOPMA 2008
2008. 7, Edmonton, Canada

29. Lengthening of photoluminescence decay time owing to expansion of electron envelope functions in stacked quantum dots
O. Kojima, H. Nakatani, T. Kita, O. Wada, K. Akahane, M. Tsuchiya
3rd International Conference on Optical, Optoelectronic and Photonic Materials and Applications, ICOOPMA 2008
2008. 7, Edmonton, Canada

28. Exciton response controlled by introducing a spacer layer in nitrided InAs quantum dots
M. Mamizuka, O. Kojima, T. Inoue, T. Kita, O. Wada
3rd International Conference on Optical, Optoelectronic and Photonic Materials and Applications, ICOOPMA 2008
2008. 7, Edmonton, Canada

27. Optical control of residual excitons for ultrafast nonlinear response in GaAs thin films
O. Kojima, A. Miyagawa, T. Kita, O. Wada, T. Isu
8th International Conference on Excitonic Processes in Condensed Matter, EXCON 2008
2008. 6, Kyoto, Japan

26. Optical cancellation of exciton population in GaAs thin films
O. Kojima, A. Miyagawa, T. Kita, O. Wada, T. Isu
3rd International Laser, Light-Wave and Microwave Conference, ILLMC 2008
2008. 4, Yokohama, Japan

2007

25. Spectral width dependence of residual carrier effect on nonlinear optical response of weakly confined excitons
O. Kojima, T. Isu, J. Ishi-Hayase, A. Kanno, R. Katouf, M. Sasaki, M. Tsuchiya
34th International Symposium on Compound Semiconductors, ISCS 2007
2007.10, Kyoto, Japan

24. Ultrafast optical Kerr effect of excitons weakly confined in GaAs thin films
A. Kanno, R. Katouf, O. Kojima, J. Ishi-Hayase, M. Tsuchiya, T. Isu
15th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors, HCIS 15
2007. 7, Tokyo, Japan

23. Photoluminescence dynamics of coupled quantum dots
H. Nakatani, T. Kita, O. Kojima, O. Wada, K. Akahane, M. Tsuchiya
16th International Conference on Dynamical Processes in Excited States of Solids, DPC 07
2007. 6, Segovia, Spain

22. Effects of excitation spectral width on decay profile of weakly confined excitons
O. Kojima, T. Isu, J. Ishi-Hayase, A. Kanno, R. Katouf, M. Sasaki, M. Tsuchiya
16th International Conference on Dynamical Processes in Excited States of Solids, DPC 07
2007. 6, Segovia, Spain

21. Decay of orientational grating of weakly confined excitons in GaAs thin films
O. Kojima, T. Isu, J. Ishi-Hayase, A. Kanno, R. Katouf, M. Sasaki, M. Tsuchiya
16th International Conference on Dynamical Processes in Excited States of Solids, DPC 07
2007. 6, Segovia, Spain

20. Photoluminescence dynamics of weakly confined excitons in GaAs thin films
A. Kanno, R. Katouf, O. Kojima, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya, T. Isu
16th International Conference on Dynamical Processes in Excited States of Solids, DPC 07
2007. 6, Segovia, Spain

19. Control of optical emission from coupled excitonic states in quantum dot superlattice structures
19th International Conference on Indium Phosphide and Related Materials, IPRM 2007
2007. 5, Matsue, Japan
H. Nakatani, T. Kita, O. Kojima, O. Wada, K. Akahane, M. Tsuchiya

18. Optical response of weakly confined excitons in GaAs thin films
A. Kanno, T. Isu, O. Kojima, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya
5th International Symposium on Nanotechnology, Japan Nano 2007
2007. 2, Tokyo, Japan

2006

17. Nonlinear optical response of weakly confined excitons
O. Kojima, T. Isu, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya
Kobe Frontier Technology Forum
2006.11, Kobe, Japan

16. Ultrafast nonlinear optical response of weakly confined excitons in GaAs thin films
O. Kojima, T. Isu, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya
33rd International Symposium on Compound Semiconductors, ISCS 2006
2006. 8, Vancouver, Canada

15. Terahertz radiation from coherent confined optical phonons in GaAs/AlAs multiple quantum wells
M. Nakayama, O. Kojima, T. Furuichi, K. Mizoguchi, S. Saito, A. Syouji, K. Sakai
14th International Conference on Superlattices, Nanostructures and Nanodevices, ICSNN 2006
2006.7-8, Istanbul, Turkey

14. Enhancement of nonlinear optical response of weakly confined excitons in GaAs thin films by spectrally rectangle-shape-pulse-excitation
O. Kojima, T. Isu, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya
International Conference on Nanoscience and Technology, ICN+T 2006
2006.7-8, Basel, Switzerland

13. Selective generation of quantum beats of weakly confined excitons
O. Kojima, T. Isu, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya
28th International Conference on the Physics of Semiconductors, ICPS 28
2006. 7, Vienna, Austria

12. Nonlinear optical response of excitons in GaAs nano-thin films
O. Kojima, T. Isu, J. Ishi-Hayase, M. Sasaki, M. Tsuchiya
4th International Symposium on Nanotechnology, Japan Nano 2006
2006. 2, Tokyo, Japan

11. Nonlinear optical response of weakly confined excitons in GaAs thin films under irradiation of femtosecond laser pulses
O. Kojima, T. Isu, J. Ishi-Hayase, M. Tsuchiya
9th International Symposium on Contemporary Photonics Technology, CPT 2006
2006. 1, Tokyo, Japan

2005

10. Spectrally resolved nonlinear optical response of weakly confined excitons under femtosecond laser pulse excitation in GaAs thin films
O. Kojima, T. Isu, J. Ishi-Hayase, M. Tsuchiya
32nd International Symposium on Compound Semiconductors, ISCS 2005
2005. 9, Europa-Park, Rust, Germany

9. Interactions between excitonic quantum beats and coherent LO phonons in GaAs/AlAs multiple quantum wells
M. Nakayama, O. Kojima, K. Mizoguchi
9th Optics of Excitons in Confined Systems and 2nd International Conference on Spontaneous Coherence in Excitonic Systems
2005. 9, Southampton, United Kingdom

8. Intense terahertz radiation from coherent optical phonons confined in a GaAs/AlAs multiple quantum well
O. Kojima, K. Mizoguchi, T. Furuichi, S. Saito, A. Syouji, K. Sakai, M. Nakayama
International Quantum Electronics Conference 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005, IQEC&CLEO-PR 2005
2005. 7, Tokyo, Japan

7. Coupling of coherent phonons to excitonic quantum beats in GaAs/AlAs multiple quantum wells
K. Mizoguchi, O. Kojima, M. Nakayama
Photonics West 2005
2005. 1, San Jose, USA

2004

6. Intense coherent optical phonons driven by impulsive excitonic interference under electric fields
O. Kojima, K. Mizoguchi, M. Nakayama
14th International Conference on Ultrafast Phenomena, UP 2004
2004. 7, Niigata, Japan

5. Excitonic quantum beats dressed with coherent phonons
K. Mizoguchi, O. Kojima, T. Furuichi, M. Nakayama, K. Akahane, N. Yamamoto, N. Ohtani
14th International Conference on Ultrafast Phenomena, UP 2004
2004. 7, Niigata, Japan

4. Intense coherent longitudinal optical phonons in CuI thin films under exciton-excitation conditions
O. Kojima, K. Mizoguchi, M. Nakayama
6th International Conference on Excitonic Processes in Condensed Matter, EXCON 2004
2004. 7, Krakow, Poland

3. Characteristics of coupled mode of excitonic quantum beat and coherent longitudinal optical phonon in GaAs/AlAs multiple quantum wells
T. Furuichi, K. Mizoguchi, O. Kojima, K. Akahane, N. Yamamoto, N. Ohtani, M. Nakayama
6th International Conference on Excitonic Processes in Condensed Matter, EXCON 2004
2004. 7, Krakow, Poland

2003

2. Enhancement of coherent LO phonons by quantum beats of excitons in GaAs/AlAs multiple quantum wells
O. Kojima, K. Mizoguchi, M. Nakayama
14th International Conference on Dynamical Processes in Exited States of Solids, DPC03
2003. 8, Christchurch, New Zealand

1998

1. Epitaxy effects on excitons in CuI thin films
D. Kim, I. Tanaka, O. Kojima, H. Ichida, M. Nakayama, H. Nishimura
3rd International Conference on Excitonic Processes in Condensed Matter, EXCON 1998
1998. 11 Boston, USA