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Œ´ ’˜ ˜_ •¶ / Research Activities

[1] K. Oguri, N. Funamori, F. Sakai, T. Kondo, T. Uchida, and T. Yagi,
"High-pressure and high-temperature phase relations in diopside CaMgSi2O6,"
Phys. Earth Planet. Inter. 104, 363 (1997).@<abstract>
[2] T. Yagi, T. Kondo, N. Funamori, K. Oguri, T. Mukaide, N. Miyajima, and K. Fujino,
"Post garnet phases and the mineralogy of the lower mantle,"
Proceedings of 16th International Conference AIRAPT-16 and HPCJ-38 on High Pressure Science and Technology edited by M. Nakahara, The Review of High puressure Science and Techonology 7( The Japan Socoetu of Hifh Pressure Science and Technology, Kyoto, Japana(1998.
PP6-8
[3] K. Oguri, N. Funamori, T. Uchida, and T. Yagi,
"High-pressure and high-temperature in situ x-ray diffraction study of natural garnet (Mg0.72Fe0.17Ca0.11)3Al2Si3O12 up to 32 GPa and 2000 K using MA8-type apparatus,"
Proceedings of 16th International Conference on High Pressure Science and Technology, 59-61 (1998).
[4] T. Uchida, N. Funamori, K. Oguri, and T. Yagi,
"Analysis of powder X-ray diffraction data obtained under uniaxial stress field,"
Proceedings of 16th International Conference on High Pressure Science and Technology, 269-271 (1998).
[5] K. Oguri, N. Funamori, T. Uchida, N. Miyajima, T. Yagi, and K. Fujino,
"Post-garnet transition in a natural pyrope: A multi-anvil study based on in situ X-ray diffraction and transmission electron microscopy, " Phys. Earth Planet. Inter. 122, 175 (2000). <abstract>
[6] T. Nishikawa, H. Nakano, K. Oguri, M. Nakao, K. Nishio, and H. Masuda,
"Nanocylinder-array structure greatly increases the soft soft X-ray intensity generated from femtosecond-laser-produced plasma, "
Appl. Phys. B. 73, 185-188 (2001). < abstract >
[7] K. Oguri, H. Nakano, T. Nishikawa, and N. Uesugi,
"Ultrashort soft-X-ray pulse-shape measurement using optical field ionization dynamics in noble gas,"
Proc. Soc. Photo-opt. Instrum. Eng. 4504, 34-41 (2001).< abstract >
[8] K. Oguri, H. Nakano, T. Nishikawa, and N. Uesugi,
"Cross-correlation measurement of ultrashort soft x-ray pulse emitted from femtosecond laser-produced plasma using optical field-induced ionization,"
Appl. Phys. Lett. 79, 4506-4508 (2001). < abstract >
[9] H. Nakano, T. Nishikawa, K. Oguri, and N. Uesugi,
"Time-resolved absorption spectroscopy using femtosecond laser-produced plasma x-rays (invited),"
Proc. Soc. Photo-Opt. Instrum. Eng. 4762, 83-92 (2002).
[10] T. Ozaki, K. Oguri, T. Nishikawa, and H. Nakano,
"Characterization of surface plasma in surface harmonic experiments using satellite structures in the reflected pump spectrum,"
X-RAY LASERS 2002, AIP Conf. Proc. 641, 424-427 (2002). < abstract >
[11] J. Q. Lin, H. Nakano, T. Nishikawa, T. Ozaki, and K. Oguri,
gPropagation of intense laser pulses in capillary and its application in X-ray laser, h in Science of Superstrong Field Interactions edited by K. Nakajima and M. Deguchi, AIP Conference Proceedings 634, (American Institute of Physics, New York, 2002), pp. 234-240.
[12] J. Q. Lin, H. Nakano, T. Nishikawa, T. Ozaki, and K. Oguri,
"Guiding of high-intensity femtosecond laser pulses in evacuated and gas-filled capillaries,"
Opt. Commun. 221, 411-417 (2003). < abstract >
[13] T. Nishikawa, K. Oguri, S. Suzuki, Y. Watanabe, O. Zhou, and H. Nakano,
"Enhanced water-window x-ray pulse generation from femtosecond-laser-produced plasma with a carbon nanotube target,"
Jpn. J. Appl. Phys. 42, L990-L992 (2003)
. < abstract >
[14] K. Oguri, T. Ozaki, T. Nishikawa, and H. Nakano,
"Femtosecond-resolution measurement of soft x-ray pulse duration using ultra-fast population increase of singly charged ions induced by optical-field ionization,"
Appl. Phys. B 78, 157-163 (2004).
< abstract >
[15] K. Oguri, T. Nishikawa, T. Ozaki, and H. Nakano,
"Sampling measurement of soft x-ray-pulse shapes using femtosecond sequential ionization of Kr+ in an intense laser field,"
Opt. Lett. 29, 1279-1281 (2004). < abstract >
[16] T. Nishikawa, H. Nakano, K. Oguri, N. Uesugi, K. Nishio, and H. Masuda,
"Nanohole-array size dependence of soft x-ray generation enhancement from femtosecond-laser-produced plasma,"
J. Appl. Phys. 96, 7537-7543 (2004) .<abstract >
[17] H. Nakano, T. Nishikawa, and K. Oguri,
"Time-resolved absorption spectroscopy using ultrashort soft x-ray pulse from femtosecond laser-produced plasma (invited),"
Proc. Soc. Photo-Opt. Instrum. Eng. 5482, 11-20 (2004).
[18] Y. Okano, K. Oguri, T. Nishikawa, and H. Nakano,
"Spatially resolved soft x-ray spectroscopy of femtosecond-laser-induced plasmas,"
Proc. Soc. Photo-Opt. Instrum. Eng. 5714 215-222 (2005).<abstract>
[19] K. Oguri, Y. Okano, T. Nishikawa, and H. Nakano,
"Transient observation of extended x-ray absorption fine structure in laser-melted Si by using femtosecond laser-produced-plasma soft x-ray,"
Appl. Phys. Lett. 87, 011503 (2005).< abstract >
[20] K. Oguri, Y. Okano, T. Nishikawa, and H. Nakano,
"Femtosecond laser-driven soft x-ray sources for time-resolved spectroscopy,"
NTT Technical Review 3, 36-44 (2005).< abstract >
[21] Y. Okano, K. Oguri, T. Nishikawa, and H. Nakano,
"Spatial distribution of line emissions from aluminum plasma excited by a pair of femtosecond laser pulses,"
J. Appl. Phys. 99, 063302 (2006). <abstract >
[22] Y. Okano, K. Oguri, T. Nishikawa, and H. Nakano,
"Soft x-ray imaging system for picosecond time-resolved absorption spectroscopy using a femtosecond-laser-plasma source,"
Rev. Sci. Insttrum. 77, 046105 (2006).<abstract>
[23] Y. Okano, K. Oguri, T. Nishikawa, and H. Nakano,
"Observation of femtosecond-laser-induced ablation plumes of aluminum using space- and time-resolved soft x-ray absorption spectroscopy,"
Appl. Phys. Lett. 89, 221502 (2006) .<abstract>
[24] Y. Okano, K. Oguri, T. Nishikawa, and H. Nakano,
"Space- and time-resolved soft x-ray absorption spectroscopy of aluminum plasma induced by femtosecond-laser ablation,"
J. Phys.: Conf. Ser. 59, 769-772 (2007). <abstract>
[25] Y. Okano, K. Oguri, T. Nishikawa, and H. Nakano,
"Femtosecond-laser-induced ablation of an aluminum target probed by space- and time-resolved soft x-ray absorption spectroscopy,"
in Ultrafast Optics V edited by S. Watanabe and K. Midorikawa (Springer-Verlag, Berlin, 2007), 165-172 (2007).
[26] K. Oguri, Y. Okano, T. Nishikawa, and H. Nakano,
"Observation of ultrafast bond-length expansion at the initial stage of laser ablation by picosecond time-resolved EXAFS,"
in Ultrafast Optics V edited by S. Watanabe and K. Midorikawa, Springer Series in Optical Sciences 132, (Springer-New York, 2007), pp173-180 (2007).
[27] K. Oguri, Y. Okano, T. Nishikawa, and H. Nakano,
"Dynamical study of laser-ablated liquid-aluminum nanoparticles using spatiotemporally resolved x-ray-absorption fine-structure spectroscopy,"
Phys. Rev. Lett. 99 165003 (2007). [Also selected for the Virtual Journal of Ultrafast Science, Vol. 6, No. 11, (2007) and the Virtual Journal of Nanoscale Science & Technology, Vol. 16, No. 18, (2007).] <abstract >
[28] K. Oguri, Y. Okano, T. Nishikawa, and H. Nakano,
"Spatiotemporally dynamics study of a femtosecond laser ablation plume based on ultrafast XAFS spectroscopy (in Japanese),"
The Review of Laser Engineering 35, 720 - 727 (2007).
[29] H. Nakano, A. Ishizawa, and K. Oguri,
"Interference between surface harmonics of carrier-envelope phase controlled few-cycle laser field,h
Proc. Soc. Photo-Opt. Instrum. Eng. 7276, 72760D (2009) .<abstract >
[30] K. Oguri, Y. Okano, T. Nishikawa, and H. Nakano,
"Dynamics of femtosecond laser ablation studied with time-resolved x-ray absorption fine structure imaging,hPhys. Rev. B 79, 144106 (2009).@[Also selected for the Virtual Journal of Ultrafast Science, Vol. 8, No. 5, (2009).]
< abstract >

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[31] K. Kato, A. Ishizawa, K. Oguri, K. Tateno, T. Tawara, H. Gotoh, M. Kitajima and H. Nakano,
gAnisotropy in ultrafast carrier and phonon dynamics in p-type heavily doped Si,h
Jpn. J. Appl. Phys. 48, 100205 (2009).
[Also selected for the Virtual Journal of Ultrafast Science, Vol. 8, No. 11, (2009).]
[32] K. Oguri, Y. Okano, T. Nishikawa, and H. Nakano,
gDynamics of Femtosecond Laser Ablation Plume Studied With Ultrafast X-ray Absorption Fine Structure Imagingh, in International Symposium on High Power Laser Ablation 2010 edited by C. R. Phipps, AIP Conference Proceedings 1278,
(American Institute of Physics, New York, 2010), pp. 656-664.
[33] K. Oguri, H. Nakano, K. Kato, T. Nishikawa, A. Ishizawa, H. Gotoh, K. Tateno, and T. Sogawa, gHigh-order harmonic photoelectron spectroscopy system towards measuring attosecond electron dynamics on solid surfacesh, in Multiphoton Processes and Attosecond Physics Proceedings, in press.
[34] K. Kato, A. Ishizawa, K. Oguri, K. Tateno, T. Tawara, H. Gotoh, and H. Nakano,
gReal-time observation of ultrafast carrier and phonon dynamics in p-type silicon (in Japanese),h
The Review of Laser Engineering 38, 130 - 135 (2010).
[35] H. Nakano, K. Oguri, Y. Okano, and T. Nishikawa,
gDynamics of femtosecond-laser-ablated liquid-aluminum nanoparticles probed by means of spatiotemporally-resolved X-ray absorption spectroscopy,h Appl. Phys. A 101, 523-531 (2010).
[36]
K. Kato, K. Oguri, A. Ishizawa, H. Gotoh, H. Nakano, and T. Sogawa,
gObservation of coherent phonons in metallic carbon nanotubes,h Appl. Phys. Lett. 97, 121910 (2010).
[Also selected for the Virtual Journal of Ultrafast Science, Vol. 9, No. 10, (2010).]
[37]
K. Kato, K. Oguri, A. Ishizawa, K. Tateno, T. Tawara, H. Gotoh, M. Kitajima, H. Nakano, and T. Sogawa,
gDoping-type dependence of phonon dephasing dynamics in Si,h Appl. Phys. Lett. 98, 141904 (2011).
[Also selected for the Virtual Journal of Ultrafast Science, Vol. 10, No. 5, (2011).]
[38]
K. Sasaki, K. Kato, Y. Tokura, K. Oguri, and T. Sogawa,
gTheory of optical transitions in grapheme nanoribbons,h
Phys. Rev. B 84 085458 (2011).
[39]
T. Hattori, A. Kubo, K. Oguri, H. Nakano, and H. T. Miyazaki,
gFemtosecond laser-excited two-photon fluorescence microscopy of surface plasmon polariton,h
Jpn. J. Appl. Phys., in press.