Zobrazeno 1 - 10
of 34
pro vyhledávání: '"R P Leavitt"'
Autor:
J. M. Bendickson, Jonathan P. Dowling, Richard L. Fork, Charles M. Bowden, Michael D. Tocci, Michael Scalora, Senter B. Reinhardt, Mark J. Bloemer, H. S. Ledbetter, R. P. Leavitt, Rachel J. Flynn
Publikováno v:
Physical Review E. 54:R1078-R1081
We examine optical pulse propagation through a 30-period, GaAs/AlAs, one-dimensional, periodic structure at the photonic band-edge transmission resonance. We predict theoretically---and demonstrate experimentally---an approximate energy, momentum, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::620193f25139b77a49309c3178e5b2f8
https://doi.org/10.1103/physreve.54.r1078
https://doi.org/10.1103/physreve.54.r1078
Autor:
R. P. Leavitt, J. W. Little
Publikováno v:
Applied Physics Letters. 84:2682-2684
We have observed a threshold voltage, below which no photocurrent flows, in a class of midwave quantum-well infrared photodetectors using (In,Ga)As/(In,Al)As lattice matched to InP substrates. We propose that this threshold voltage is the result of i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d81a21fc85aa12b9a0964b0d5fbadd26
https://doi.org/10.1063/1.1697643
https://doi.org/10.1063/1.1697643
Autor:
J. L. Bradshaw, R. P. Leavitt
Publikováno v:
Journal of Applied Physics. 76:3429-3442
We report the growth of high‐quality As‐based ternary and quaternary alloys lattice matched to InP using a valved arsenic source that can post‐heat the As beam after evaporation. We find that the optimum group‐V‐to‐group‐III beam‐equi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62f436366ad6dd346c5d5f05525224c4
https://doi.org/10.1063/1.357473
https://doi.org/10.1063/1.357473
Autor:
R. P. Leavitt, J. W. Little
Publikováno v:
Applied Physics Letters. 79:2091-2093
We have demonstrated an infrared photodetector based on intersubband transitions in doped (In, Ga)As quantum wells in which the excited state is confined by the minigap between two minibands in a surrounding superlattice. Sharp peaks were observed at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d767330d46bdce1ef1cdf213d562afd
https://doi.org/10.1063/1.1374482
https://doi.org/10.1063/1.1374482
Autor:
J. W. Little, R. P. Leavitt
Publikováno v:
Physical Review B. 42:11774-11783
We present a simple, general method for calculating the binding energies of excitons in quantum-confined structures. The binding energy is given by an integral (over the electron and hole coordinates perpendicular to the confining layers) of a prescr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4906449369fbd103e14b88622237881
https://doi.org/10.1103/physrevb.42.11774
https://doi.org/10.1103/physrevb.42.11774
Publikováno v:
MTT-S International Microwave Symposium Digest.
Results are given that describe our experimental observations of orotron oscillation and the physical principles which govern the design of this device, a Smith-Purcell free-electron laser for the millimeter and submillimeter wavelength regions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ef02e16e1be735b7a0fe6121d8496a2
https://doi.org/10.1109/mwsym.1981.1129893
https://doi.org/10.1109/mwsym.1981.1129893
Publikováno v:
Applied Physics Letters. 67:3771-3773
Measures of the mosaic dispersion of a series of self‐nucleated AlxGa1−xN thin films, grown by low‐pressure metalorganic chemical vapor deposition in a nitrogen carrier gas, have been accumulated by a combination of reciprocal space x‐ray sca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcb4d954eb34618ecc2d198b3ef79e81
https://doi.org/10.1063/1.115378
https://doi.org/10.1063/1.115378
Publikováno v:
Applied Physics Letters. 66:1803-1805
We have measured room‐temperature photocurrent spectra of p‐i‐n diode structures containing multiple superlattice‐equivalent quantum wells wherein each quantum well consists of a few periods of a fine‐period (In,Ga)As/(In,Al)As superlattice
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b217a6759a4e7d0665d4119637720f7
https://doi.org/10.1063/1.113327
https://doi.org/10.1063/1.113327
Publikováno v:
Applied Physics Letters. 66:90-92
We have designed and demonstrated a narrow bandpass filter, which is composed of a double‐barrier structure, for an infrared hot‐electron transistor with a cutoff wavelength at 14 μm. The filter is capable of suppressing the low energy thermally
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0ede6cd3bf984a08c02db5b781f40a6
https://doi.org/10.1063/1.114156
https://doi.org/10.1063/1.114156
The U. S. Army Research Laboratory (ARL) in collaboration with a number of industry and university partners is developing a new generation of sensors that can perform advanced signal processing functions over a very wide range of wavelengths (e.g. fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d50e99013828033a9da26eb5ac079017
https://doi.org/10.21236/ada393876
https://doi.org/10.21236/ada393876
