Zobrazeno 1 - 10
of 18
pro vyhledávání: '"J. J. Song"'
Autor:
B. Goldenberg, S. J. Hwang, Arthur J. Fischer, R. J. Hauenstein, R. Horning, Xincheng Xie, Michael D. Bremser, W. Shan, S. Krishnankutty, B. D. Little, D. S. Kim, W. G. Perry, J. J. Song, Robert F. Davis
Publikováno v:
Journal of Applied Physics. 83:455-461
Intrinsic excitonic transitions in GaN have been studied using a variety of spectroscopic measurements. Sharp spectral structures associated with intrinsic free excitons could be observed in photoluminescence, reflection, and absorption spectra. The
Autor:
Abdellatif Bouchalkha, Charles W. Tu, H. Hou, J. M. Jacob, J. J. Song, Hadis Morkoç, D. S. Kim, John F. Klem
Publikováno v:
Physical Review B. 51:5449-5452
Using picosecond Raman scattering, hot-phonon occupation numbers (N) of GaAs and GaAs-like LO phonons have been studied over a wide range of structural parameters in more than 30 GaAs/${\mathrm{Al}}_{\mathit{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-
Publikováno v:
Journal of Applied Physics. 74:5699-5704
We present a study of the optical properties of highly strained CdSe/ZnSe quantum well system. A variety of CdSe/ZnSe samples containing single quantum well or multiple quantum wells grown by molecular beam epitaxy has been studied by using low‐tem
Publikováno v:
Physical Review B. 47:3765-3770
We report low-temperature photoluminescence studies of GaAs/GaAs 1-x P x strained quantum-well samples grown by gas-source molecular-beam epitaxy as a function of pressure. We have found that the transitions between the lowest Γ-confined electron an
Publikováno v:
Physical Review B. 45:13973-13977
The initial generation of hot LO phonons by photoexcited hot carriers is studied with picosecond Raman spectroscopy in GaAs and a series of ${\mathrm{Al}}_{\mathit{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$As samples with 0x0.4. A rapid
Autor:
P. H. Song, J.S. Khim, J. J. Song, Y. H. Yee, S. H. Jhi, Yong-Sik Lim, Eun-joo Shin, D. S. Kim, Jisoon Ihm, D. H. Woo, Jeongkug Lee, K. N. Kang, Dongho Kim, Joon-Sung Chang
Publikováno v:
Physica B: Condensed Matter. :684-686
Spatial and dynamical properties of optical phonons in AlxGa1−xAs alloys and GaAs/AlxGa1−xAs quantum wells are studied. An isotopically disordered harmonic crystal model is developed to study spatial properties of optical phonons in AlxGa1−xAs
Autor:
Wladek Walukiewicz, W. Shan, G. Cantwell, H. B. Yuan, J. J. Song, Kin Man Yu, H. P. Xin, Joel W. Ager
Publikováno v:
Shan, W.; Walukiewicz, W.; Ager III, J.W.; Yu, K.M.; Yuan, H.B.; Xin, H.P.; et al.(2004). Nature of room-temperature photoluminescence in ZnO. Lawrence Berkeley National Laboratory. Lawrence Berkeley National Laboratory: Lawrence Berkeley National Laboratory. Retrieved from: http://www.escholarship.org/uc/item/87p1p5m8
The temperature dependence of the photoluminescence (PL) transitions associated with various excitons and their phonon replicas in high-purity bulk ZnO has been studied at temperatures from 12 K to above room temperature (320 K). Several strong PL em
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a24fc351407d0582f1d4d9ad566af62
http://www.escholarship.org/uc/item/87p1p5m8
http://www.escholarship.org/uc/item/87p1p5m8
Publikováno v:
Applied Physics Letters. 67:2512-2514
We report the results of time‐resolved studies on the exciton radiative decay in single‐crystal GaN films grown by metalorganic chemical vapor deposition. Time‐resolved photoluminescence (PL) measurements were performed on the samples at variou
Autor:
Young-Dahl Jho, K. El Sayed, J. A. Kenrow, Arthur J. Fischer, J. J. Song, Christopher J. Stanton, Dongmok Kim
Femtosecond pump-probe (PP) differential reflectivity spectroscopy (DRS) and four-wave mixing (FWM) experiments were performed simultaneously to study the initial temporal dynamics of the exciton line-shapes in GaN epilayers. Beats between the A-B ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e93b0945895621a38b3019d30f195526
Autor:
D. B. Eason, Dai-Sik Kim, J. F. Schetzina, Arthur J. Fischer, J. Ren, J. Hays, J. J. Song, W. Shan
Publikováno v:
Applied Physics Letters. 65:1534-1536
Extreme high order nonlinear diffracted signals are found in ZnCdSe/ZnSe quantum wells in two beam, self‐diffraction geometry. Diffracted signals of all observed orders are shown to originate predominantly from excitonic resonances. Using four‐wa