Publication list

Journal

(45) Surface plasmon enhanced bright light emission from InGaN/GaN

K. Okamoto, I. Niki, A. Shvartser, G. Maltezos, Y. Narukawa, T. Mukai, Y. Kawakami, A. Scherer

Physica Status Solidi, Accepted 11/29/2006, in press

(44) Time-resolved photoluminescence spectroscopy of surface-plasmon-enhanced light emission from conjugate polymers

T. D. Neal, K. Okamoto, A. Scherer, M. S. Liu, A. K-Y Jen

Applied Physics Letters, Vol. 89, Art. No. 221106 (2006) PDF file (165KB)

(43). Ultralow threshold on-chip toroidal microcavity nanocrystal quantum dot lasers

B. Min, S. Kim, K. Okamoto, L. Yang, A. Scherer, H. Atwater, K. Vahala

Applied Physics Letters, Vol. 89, Art. No. 191124 (2006) PDF file (529KB)

(42) Diffusion of the Platinum ions and platinum nanoparticles during the photo-reduction processes using the transient grating method

M. Harada, K. Okamoto, M. Terazima

Langmuir, Vol. 22, No. 22, pp. 9142-9194 (2006) PDF file (278KB)

(41) Surface plasmon enhanced bright emission from CdSe quantum dots nanocrystal

K. Okamoto, S. Vyawahare, A. Scherer

Journal of the Optical Society of America B, Vol. 23, No. 8, pp. 1674-1678 (2006). PDF file (300KB)

(40). Electrochemical conditions for the synthesis of Cu2O nanowires in alumina template

E. Ko, J. Choi, K. Okamoto, Y. Taka, J. Lee

ChemPhysChem, Vol. 7, No. 7, pp. 1505-1509 (2006). PDF file (232KB)

(39). Near-field scanning optical microscopic transient lens for carrier dynamics study in InGaN/GaN

K. Okamoto, A. Scherer, Y. Kawakami

Applied Physics Letters, Vol. 87, Art. No. 161104 (2005). PDF file (322KB)

---> highlighted at Editors’ Choice, Science Vol.310, p.591 (2005)

(38). Confocal micro-photoluminescence of InGaN-based light emitting diodes

K. Okamoto, A. Kaneta, Y. Kawakami, S. Fujita, J. Choi, M. Terazima, T. Mukai

Journal of Applied Physics, Vol. 98, Art. No. 064503 (2005). PDF file (720KB)

(37). Molecular dynamics study of photochromic molecules probed by the mask pattern transferred transient grating technique

K. Okamoto, T. D. Neal, Z. Zhang, D. T. Wei, A. Scherer

Chemical Physics Letters, Vol. 414, pp. 155-160 (2005). PDF file (218KB)

(36). Surface plasmon enhanced spontaneous emission rate of InGaN/GaN quantum wells probed by time-resolved photoluminescence spectroscopy

K. Okamoto, I. Niki, A. Scherer, Y. Narukawa, T. Mukai, Y. Kawakami

Applied Physics Letters, Vol. 87, Art. No. 071102 (2005). PDF file (364KB)

(35). Surface plasmon enhanced emission from dye doped polymer layers

T. D. Neal, K. Okamoto, A. Scherer

Optics Express, Vol. 13, No. 14, pp. 5522-5527 (2005). PDF file (118KB)

---> highlighted at Laser Focus World, September 2005, p. 36

(34). Surface plasmon enhanced super bright InGaN light emitter

K. Okamoto, I. Niki, A. Shvartser, Y. Narukawa, T. Mukai, and A. Scherer

Physica Status Solidi (c), Vol. 2, No. 7, pp. 2841-2844 (2005). PDF file (104KB)

(33). Mask pattern transferred transient grating technique for molecular dynamics study in solutions

K. Okamoto, Z. Zhang, D. T. Wei, and A. Scherer

Applied Physics Letters, Vol. 85, No. 21, pp. 4842-4844 (2004). PDF file (207KB)

(32). Surface plasmon enhanced light-emitters based on InGaN quantum wells

K. Okamoto, I. Niki, A. Shvartser, Y. Narukawa, T. Mukai, and A. Scherer

Nature Materials, Vol. 3, No. 9, pp. 601–605 (2004). PDF file (372KB)

---> highlighted at Photonics Spectra, December 2004, p. 105

(31). Photothermal molecular sensing by using metal thin-film nano grating for chemical and biomedical applications

K. Okamoto, Z. Zhang, D. T. Wei, and A. Scherer

Thin Solid Films, Vol. 469-470, pp. 420-424 (2004). PDF file (332KB)

(30). Submicron-scale photoluminescence of InGaN/GaN probed by confocal scanning laser microscopy

K. Okamoto, J. Choi, Y. Kawakami, M. Terazima, T. Mukai, and S. Fujita

Japanese Journal of Applied Physics, Vol. 43, No. 2, pp. 839-840 (2004). PDF file (128KB)

(29). Photonic crystal nanolasers (I): Porous cavity lasers

M. Lončar, T. Yoshie, K. Okamoto, Y. Qiu, J. Vučković, A. Scherer

IEICE Transaction on Electronics, Vol. E87-C, No. 3, pp. 291-299 (2004). PDF file (1430KB)

(28). Sub-microscopic transient lens spectroscopy of InGaN/GaN quantum wells

K. Okamoto, S. Fujita, Y. Kawakami, A. Scherer

Physica Status Solidi (b), Vol. 240, No. 2, pp. 368-371 (2003). PDF file (309KB)

(27). Recombination dynamics in low-dimensional nitride semiconductors

Y. Kawakami, A. Kaneta, K Omae, A. Shikanai, K. Okamoto, G. Marutsuki, Y. Narukawa, T. Mukai, S. Fujita

Physica Status Solidi (b), Vol. 240, No. 2, pp. 337-343 (2003). PDF file (460KB)

(26). Near-field scanning optical microscopy of photonic crystal nanocavities

K. Okamoto, M. Lončar, T. Yoshie, A. Scherer, Y. Qui, P. Gogna,

Applied Physics Letters, Vol. 82, No. 10, pp. 1676-1678 (2003). PDF file (328KB)

(25). Contribution of hydrogen bonding to the slow diffusion of transient radicals

K. Okamoto, Y. Nogami, T. Tominaga, M. Terazima

Chemical Physics Letters, Vol. 372, pp. 419-422 (2003). PDF file (155KB)

(24). Photonic crystal nanocavities for efficient light confinement and emission

A. Scherer, T. Yoshie, M. Lončar, J. Vučković, K. Okamoto, D. Deppe

Journal of the Korean Physical Society, Vol 42, pp. S768-S773 (2003). PDF file (585KB)

(23). Nonradiative recombination processes of carriers in InGaN/GaN probed by the microscopic transient lens spectroscopy

K. Okamoto, K. Inoue, Y. Kawakami, Sg. Fujita, M. Terazima, A. Tsujimura, I. Kidoguchi

Review of Scientific Instruments, Vol. 74, No. 1, pp. 575-577 (2003). PDF file (71.7KB)

(22). Spatial and temporal luminescence dynamics in an In_xGa_1-xN single quantum well probed by near field optical microscopy

A. Kaneta, K. Okamoto, Y. Kawakami, Sg. Fujita, G. marutsuki, Y. Narukawa, T. Mukai

Applied Physics Letters, Vol. 81, No. 23, pp. 4353-4355 (2002). PDF file (180KB)

(21). Erratum: ‘‘Narrow luminescence lines from self-assembled CdSe quantum dots at room temperature’’ [Appl. Phys. Lett. 78, 297 (2001)]

Z. H. Zheng, K. Okamoto, H. C. Ko, Y. Kawakami, Sg. Fujita

Applied Physics Letters, Vol. 78, No. 23, p. 3749 (2002). PDF file (10.4KB)

(20). Microscopic patterning on the polysilane films by the laser induced grating technique

K. Okamoto, T. Tojo, H. Tada, M. Terazima, K. Matsushige

Molecular Crystal and Liquid Crystals, 370, pp370-382 (2001). PDF file (155KB)

(19). Carrier dynamics in InGaN/GaN SQW structure probed by the transient grating method with subpicosecond pulsed laser

K. Okamoto, A. Kaneta, K. Inoue, Y. Kawakami, M. Terazima, T. Mukai, G. Shinomiya, Sg. Fujita

Physica Status Solidi B, Vol. 228, No. 1, pp. 81-84 (2001). PDF file (143KB)

(18). Spatial inhomogeneity of photoluminescence in InGaN single quantum well structures

A. Kaneta, G. Marutsuki, K. Okamoto, Y. Kawakami, Y. Nakagawa, G. Shinomiya, T. Mukai, Sg. Fujita

Physica Status Solidi B, Vol. 228, No. 1, pp. 153-1564 (2001). PDF file (249KB)

(17). In inhomogeneity and emission characteristics of InGaN

Y. Kawakami, K. Omae, A. Kaneta, K. Okamoto, Y. Narukawa, T. Mukai, Sg. Fujita

Journal of Physics: Condensed Matter, Vol. 13, pp. 6993-7010 (2001). PDF file (863KB)

(16). Spatial inhomogeneity of photoluminescence in an InGaN-based light-emitting diode structure probed by near-field optical microscopy under illumination-collection mode

A. Kaneta, T. Izumi, K. Okamoto, Y. Kawakami, Sg. Fujita, Y. Narita, T. Inoue, T. Mukai

Japanese Journal of Applied Physics, Vol. 40 pp. 110-111 (2001) PDF file (41.1KB)

(15). Radiative and nonradiative recombination processes in GaN-based semiconductors

Y. Kawakami, K. Omae, A. Kaneta, K. Okamoto, T. Izumi, S. Saijo, K. Inoue, Y. Narukawa, S. Nakamura, Sg. Fujita

Physica Status Solidi (a), Vol. 183, pp. 41-50 (2001) PDF file (208KB)

(14). Translational diffusion of ion radicals created by electron transfer in charged micellar solutions probed by the transient grating method and the Taylor dispersion method

K. Okamoto, N. Hirota, M. Terazima, T. Tominaga,

The Journal of Physical Chemistry A, Vol.105, No.27, pp. 6586-6593 (2001). PDF file (107KB)

(13). Photothermal processes of wide-bandgap semiconductors probed by the transient grating method

K. Okamoto, Y. Kawakami, Shigeo Fujita, M. Terazima

Analytical Science, Vol. 17, pp. s312-s314 (2001). PDF file (421KB)

(12). Time-space resolved photoluminescence from (Zn,Cd)Se -based quantum dots structures

K. Okamoto, H.-C. Ko, Y. Kawakami, Sg. Fujita

Journal of Crystal Growth, 214/215, pp. 639-645 (2000). PDF file (502KB)

(11). Time-reserved photoluminescence spectroscopy in GaN-based semiconductors with micron special

T. Izumi, Y. Narukawa, K. Okamoto, Y. Kawakami, Shigeo Fujita, S. Nakamura

Journal of Luminescence, 87-89, pp. 1196-1198 (2000). PDF file (424KB)

(10). Diffusion of photochemically generated intermediate radicals in water-ethanol mixed solvents

K.Okamoto, N. Hirota, M. Terazima

The Journal of Physical Chemistry A, Vol.102, No.19 pp. 3447-3454 (1998). PDF file (104KB)

(9). Diffusion of electrically neutral radicals and anion radicals created by photochemical reaction

K. Okamoto, N. Hirota, M. Terazima

The Journal of Chemical Society Faraday Transaction, Vol.94, No.1 pp. 185-194 (1998). PDF file (337KB)

(8). Diffusion process of the benzyl radical created by photodissociated probed by the transient grating method

K. Okamoto, N. Hirota, M. Terazima

The Journal of Physical Chemistry A, Vol.101, No.29, pp. 5269-5277 (1997). PDF file (306KB)

(7). Comment on "Diffusion of free radicals in solution. TEMPO, diphenylpicrylhydrazyl, and nitrosodisulfonate"

K. Okamoto, N. Hirota, M. Terazima

The Journal of Physical Chemistry A, Vol.101, No.29, pp. 5380-5381 (1997). PDF file (52.8KB)

(6). Temperature dependence of diffusion of radical intermediates probed by the

transient grating method

K. Okamoto, M. Terazima, N. Hirota

The Jounal of Chemical Physics, Vol.103, No.24, pp. 10445-10452 (1995). PDF file (169KB)

(5). Translational diffusion of transient radicals created by the photoinduced hydrogen abstraction reaction in solution: Anomalous size dependence in the radical diffusion