Zobrazeno 1 - 10
of 22
pro vyhledávání: '"B. G. Sfez"'
Publikováno v:
Materials Science in Semiconductor Processing. 3:499-504
Photosensitive chalcogenide glasses are very promising materials for pulsed holography, pulsed photolithography and pulsed optical information recording due to their exceptional sensitivity to pulsed light excitation. We present a comprehensive study
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::faf42ab89fad8ef36f9e37792fd4d2d8
https://doi.org/10.1016/s1369-8001(00)00094-9
https://doi.org/10.1016/s1369-8001(00)00094-9
Publikováno v:
physica status solidi (b). 173:473-477
A pump and probe measurement of the nonlinear transmission reveals that the origin of the saturating behaviour of the nonlinear index δn NL observed in the band tail of GaAs/GaAlAs multiple quantum wells is due to the saturation of the photoexcited
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7119e85a64956688a930a26cd77111f
https://doi.org/10.1002/pssb.2221730147
https://doi.org/10.1002/pssb.2221730147
Publikováno v:
Optical and Quantum Electronics. 24:S193-S207
We discuss recent results showing the possibility of reducing further the switching threshold of GaAs quantum well bistable microresonators, taking into account the materials optical properties, both in the nonlinear medium and in the Bragg reflector
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed7e0fb304d99041c670afd902fefeb6
https://doi.org/10.1007/bf00625824
https://doi.org/10.1007/bf00625824
Publikováno v:
Superlattices and Microstructures. 12:89-92
We report on recent progress in reducing the power threshold of all-optical bistable quantum well vertical microcavities. Significant improvements are achieved through an increase of the cavity finesse, together with a reduction of the device active
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c46067bfae80eb63d4113de8f3dd6fb
https://doi.org/10.1016/0749-6036(92)90227-v
https://doi.org/10.1016/0749-6036(92)90227-v
Publikováno v:
Optics letters. 13(10)
We report all-optical switching of 100-fsec pulses in a fused-quartz dual-core-fiber directional coupler. The length of the device is 0.5 cm, and the switching power is 32 kW. Pulses are routed to either of two separate fiber guides, depending on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f3e2c6056efd6203cf0fd18d204b769
https://pubmed.ncbi.nlm.nih.gov/19746074
https://pubmed.ncbi.nlm.nih.gov/19746074
Autor:
Yaron Silberberg, B. G. Sfez
Publikováno v:
Optics letters. 13(12)
We propose and study a novel all-optical waveguide switching element made from a nonlinear symmetric junction. Nonlinear index changes break the symmetry of the structure and induce routing of the signal to one of two output ports. Power- and phase-c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f23d64077405310e5e3cdf3ddfbb5538
https://pubmed.ncbi.nlm.nih.gov/19746148
https://pubmed.ncbi.nlm.nih.gov/19746148
Publikováno v:
physica status solidi (b). 159:181-189
An experimental study is made of GaAs/AlGaAs monolithic bistable etalons fabricated by metalorganic vapor-phase epitaxy. Optical bistability is observed in the reflective mode, with a minimum threshold power of less than 3 mW and a switching contrast
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fb68c2b1dd4b02b9446436b24c2374d
https://doi.org/10.1002/pssb.2221590120
https://doi.org/10.1002/pssb.2221590120
Autor:
A. Lev, B. G. Sfez
Publikováno v:
Optics letters. 28(17)
Ultrasound-modulated light tomography is a new technique that combines laser light and ultrasound to provide a representation of the light density inside turbid media. We present a method that can produce two- or three-dimensional light density repre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e49e046aab35d17f900ba78fa83b19d8
https://pubmed.ncbi.nlm.nih.gov/12956375
https://pubmed.ncbi.nlm.nih.gov/12956375
Autor:
R. Kuselewicz, J. L. Oudar, Gerald S. Buller, B. G. Sfez, E. V. K. Rao, A. C. Walker, J. S. Massa
Publikováno v:
Applied Physics Letters. 61:2205-2207
Time‐resolved photoluminescence measurements with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8348d8523e957ff9d83006955d09fb93
https://doi.org/10.1063/1.108295
https://doi.org/10.1063/1.108295
Publikováno v:
Applied Physics Letters. 60:1163-1165
The saturation behavior of the nonlinear index δnNL in the band tail of GaAs/AlGaAs multiple quantum wells is experimentally studied in quasi‐steady state and in a low absorption region (below 300 cm−1), where dispersive optical bistability is o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fe20cfd1ef44607ee349ddeadbaca5d
https://doi.org/10.1063/1.107392
https://doi.org/10.1063/1.107392