Zobrazeno 1 - 10
of 31
pro vyhledávání: '"M. Hafich"'
Autor:
T. Chang, G. D. Gilliland, Y. H. Kao, John F. Klem, M. Hafich, Yun-Liang Soo, S. Huang, L. P. Fu, Z. H. Ming
Publikováno v:
Modern Physics Letters B. 11:1057-1067
A series of type-II GaAs/AlAs superlattices epitaxially grown with different interrupts have been investigated using the techniques of grazing incidence X-ray scattering and diffraction. The interrupts are specifically designed to alter the interfaci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf1d30e5371f6161f892bbcedc9db480
https://doi.org/10.1142/s0217984997001274
https://doi.org/10.1142/s0217984997001274
Publikováno v:
1999 IEEE LEOS Annual Meeting Conference Proceedings. LEOS'99. 12th Annual Meeting. IEEE Lasers and Electro-Optics Society 1999 Annual Meeting (Cat. No.99CH37009).
The recent development of infra-red selectively oxidized vertical cavity surface emitting lasers (VCSELs) has been enabled through improvement of the oxide aperture design within the laser cavity. VCSEL designs using thin oxide apertures offset a few
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8266a5b1520d1de1e2c50e3335b3e53
https://doi.org/10.1109/leos.1999.811765
https://doi.org/10.1109/leos.1999.811765
Publikováno v:
LEOS '95. IEEE Lasers and Electro-Optics Society 1995 Annual Meeting. 8th Annual Meeting. Conference Proceedings.
In conclusion, a new single-mode cutoff mesa GaAs-AlGaAs rib waveguide has been designed and demonstrated. Using the principle of the cutoff slab waveguide, this waveguide provides singlemode performance regardless of any deep etches that might be us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf5c324a4d3e425e0a2c9f0096fdfd2c
https://doi.org/10.1109/leos.1995.484806
https://doi.org/10.1109/leos.1995.484806
Autor:
M. Housel, B. A. Fuchs, J. R. Wendt, V. M. Hietala, C. T. Sullivan, M. G. Armendariz, G. A. Vawter, M. Hafich
Publikováno v:
Integrated Photonics Research.
A high-electrooptic-efficiency Mach-Zehnder intensity modulator is demonstrated with a bandwidth exceeding 40 GHZ. The 1 mm-long modulator has a switching voltage comparable to undoped semiconductor designs of much greater length.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0957e506a2747432b5cc214f079f94cd
https://doi.org/10.1364/ipr.1996.itug6
https://doi.org/10.1364/ipr.1996.itug6
Autor:
G. Devane, Z. H. Ming, L. P. Fu, Yun-Liang Soo, M. Hafich, G. D. Gilliland, S. Huang, Y. H. Kao, C. Choi-Feng, J. Klem, T. Chang, K. A. Stair
Publikováno v:
MRS Proceedings. 417
Semiconductor superlattices have been studied by grazing incidence x-ray scattering and x-ray diffraction. For superlattices of 100-period InGaAs/GaAs, lateral structural ordering has been found to occur in the material. For one particular sample (M1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e704544f387060150deb184cd4afd8b
https://doi.org/10.1557/proc-417-325
https://doi.org/10.1557/proc-417-325
Publikováno v:
Spatial Light Modulators and Applications.
Optoelectronic effects in MQW structures, for optical modulators and switches, have attracted wide interest because of their potential applications in high speed signal processing(1). Due to the Quantum Confined Stark effect, a red shift of the absor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::886b3af0967cea06e9f99afa818710ec
https://doi.org/10.1364/slma.1990.ma2
https://doi.org/10.1364/slma.1990.ma2
Autor:
M. Hafich, C. T. Fuller, Randy J. Shul, Charles T. Sullivan, M. B. Snipes, J. W. Lee, C. Constantine, G.B. McClellan, Stephen J. Pearton
Publikováno v:
Solid-State Electronics. 38:2047
AlGaAs GaAs ridge waveguides with fundamental mode attenuation ≤ 1 dBcm−1 at a wavelength of 1.32 μm and channel widths of 4–4.5 μm are realized by ECR (Electron Cyclotron Resonance) plasma etching in BCl3/Cl2/Ar/N2 chemistries. The choice of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28c714996269984ca0e02015f3a80243
https://doi.org/10.1016/0038-1101(95)00034-q
https://doi.org/10.1016/0038-1101(95)00034-q
Autor:
G.B. McClellan, C. T. Fuller, C. Constantine, Charles T. Sullivan, Randy J. Shul, Jeffrey Mileham, M. B. Snipes, M. Hafich, S. J. Pearton
Publikováno v:
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 13:2025
An anisotropic nonselective etch for GaAs/AlGaAs rib waveguides has been developed for use under electron cyclotron resonance conditions. The plasma chemistry features BCl3 to minimize AlGaAs oxidation effects and small additions of N2 to induce side
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0da41c31f2c9c4b76bb15f3cb939548
https://doi.org/10.1116/1.588128
https://doi.org/10.1116/1.588128
Autor:
L. P. Fu, R. Chen, K. K. Bajaj, Alex Antonelli, D. J. Wolford, John F. Klem, G. D. Gilliland, T. Chang, F. T. Bacalzo, M. Hafich
Publikováno v:
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 13:1760
We have quantitatively characterized the heterointerfaces in type‐II GaAs/AlAs short‐period structures with various types of growth interrupts. The quality of the heterointerfaces is governed by two factors: the magnitude of the potential fluctua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2d16482743b79d7ec45a0cf36d4c1d0
https://doi.org/10.1116/1.587809
https://doi.org/10.1116/1.587809
Publikováno v:
Ferroelectrics. 27:73-76
Techniqus for efficient modulation of multimode unpolariezed light are important for optical communications. Integrated optic and micro-optic modulators were constructed using the electric field induced scattering effects in 9/65/35 PLZT and modulati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e29e05e73040ffaffb586200900b8a44
https://doi.org/10.1080/00150198008226068
https://doi.org/10.1080/00150198008226068