Zobrazeno 1 - 10
of 214
pro vyhledávání: '"J. F. Ryan"'
Publikováno v:
Analysis of Trace Organics in the Aquatic Environment ISBN: 9781315149882
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ec86e067e1c8e5476be04ebc12642f3
https://doi.org/10.1201/9781315149882-7
https://doi.org/10.1201/9781315149882-7
We generated pulsed quadrature-squeezed light by cross-phase modulation in single-crystal hexagonal CdSe at wavelengths of 1.4 to 1.55mum . We measured 0.4-dB squeezing (0.7 dB is inferred at the crystal) with 100-fs laser pulses. The wavelength and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc0dbe83a62f55a1f63882bf2b083d89
https://ora.ox.ac.uk/objects/uuid:b5edd2e8-db38-4c66-9ae5-a5f8f60f86fd
https://ora.ox.ac.uk/objects/uuid:b5edd2e8-db38-4c66-9ae5-a5f8f60f86fd
We report the first picosecond time-resolved photoluminescence measurementsof hot-carrier relaxation in a modulation-doped GaAs-GaAlAs MQW in the presence of strong magnetic fields. We have measured the lifetimes of carriers in excited Landau levels
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::738a81c0e9a13952ba3c3f46dbdc2cfe
https://ora.ox.ac.uk/objects/uuid:e8ec9b49-93e4-4535-9979-d1735727efe5
https://ora.ox.ac.uk/objects/uuid:e8ec9b49-93e4-4535-9979-d1735727efe5
Autor:
James H. Rice, Yasuhiko Arakawa, J. F. Ryan, Robert A. Taylor, Takao Someya, K. Kyhm, J. D. Smith
The Kerr gate technique is used to time-resolve the gain in an In0.02Ga0.98N/In0.16Ga0.84N multiple quantum well sample. A new way of analyzing the data in such a variable stripe length method gain experiment is used to analyze both the time-integrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff024db8e5e212cb7b40e958517e5494
https://doi.org/10.1016/s1567-1739(02)00118-9
https://doi.org/10.1016/s1567-1739(02)00118-9
A new second-order light scattering process has been observed which yields line spectra at frequency shifts LO±SF, where LO is a longitudinal optical-phonon frequency, and SF is an electron or hole spin-flip frequency. The scattering is highly reson
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48cb4232c9419e561458ecc2277e5bde
https://doi.org/10.1103/physrevlett.34.209
https://doi.org/10.1103/physrevlett.34.209
We report a theoretical investigation of carrier trapping in GaAs v-groove quantum wire structures. Our results show that trapping is fast in wires confined by AlGaAs alloy barriers where the growth process creates a Ga-rich vertical quantum well at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33cea93be848b9e3d84427e5cfb5c3e9
https://ora.ox.ac.uk/objects/uuid:f5530798-33b5-4f24-bdee-d234c1f9861d
https://ora.ox.ac.uk/objects/uuid:f5530798-33b5-4f24-bdee-d234c1f9861d
Autor:
R. Roshan, M. Hauert, Jong-Young Kim, A. Kaluza, J. F. Ryan, Th. Schäpers, A Schwarz, A. C. Maciel, Hans Lüth
Publikováno v:
Springer Proceedings in Physics ISBN: 9783642639937
Springer Proceedings in Physics
Springer Proceedings in Physics
We present the first low-temperature scanning near-field optical microscopy cross-section images of v-groove quantum wire structures. Images with a resolution of similar to 200 nm are obtained and spatial mapping of the photoluminescence provides dir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0599a2c1b56db43bcb76c1cf853594d
https://ora.ox.ac.uk/objects/uuid:db422d32-f973-43fc-830a-de1926810c83
https://ora.ox.ac.uk/objects/uuid:db422d32-f973-43fc-830a-de1926810c83
Transition metal impurities act as deep trapping centres in III-V and II-VI compounds and give rise to near-infrared absorption and luminescence. In many cases the charge state of the ion participating in these optical transitions is either unknown o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6228fa1daf3741022c9e3b1b8025138f
https://ora.ox.ac.uk/objects/uuid:fcc30080-c3f7-43ea-b846-befdb512d40f
https://ora.ox.ac.uk/objects/uuid:fcc30080-c3f7-43ea-b846-befdb512d40f
Publikováno v:
ResearcherID
We have measured the nonlinear refractive index near half-bandgap ( E g 2 ) in ZnS and ZnSe by self-phase modulation experiments. The ratio of the nonlinear phase shift and the total optical absorption losses is critically dependent on the detuning f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da86f492227b3829400aebfa3c6784ef
https://ora.ox.ac.uk/objects/uuid:e0fb1cd0-7dcc-4312-85b3-16c10cdaf939
https://ora.ox.ac.uk/objects/uuid:e0fb1cd0-7dcc-4312-85b3-16c10cdaf939
The results of a combined experimental and theoretical analysis of time-resolved optical absorption in a GaAs quantum well which allowed for the first time a detailed test of the theoretically predicted scattering rates were presented. The results pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2406d4db87ad2d6fbc34c177521b4b67
https://ora.ox.ac.uk/objects/uuid:f0be02ee-b952-450e-a06a-2be7f8787849
https://ora.ox.ac.uk/objects/uuid:f0be02ee-b952-450e-a06a-2be7f8787849