Zobrazeno 1 - 10
of 53
pro vyhledávání: '"D. Z. Garbuzov"'
Publikováno v:
Measurement Science and Technology. 13:1545-1551
The combustion behaviour of three different fuels, bituminous coal, beech wood and fir wood, was investigated by monitoring the concentrations of CO, CH4, CO2 and O2 during devolatilization and char combustion. Single fuel particles (4–6 mm diamete
Autor:
Stephen R. Forrest, Gregory H. Olsen, Marshall J. Cohen, R.J. Menna, D. Z. Garbuzov, D. S. Kim, Michael J. Lange
Publikováno v:
Journal of Electronic Materials. 25:1501-1505
Photoluminescence spectra and efficiency have been measured for several strained InAsyP1−yInxGa1−xAs (0.28 < y ≤ 0.62; 0.66 ≤ x ≤ 0.83) double heterostructures grown by vapor phase epitaxy on InP substrates with graded InAsP buffer layers.
Publikováno v:
Journal of Geophysical Research. 115
[1] Mineral dust interacts with radiation and impacts both the regional and global climate. The relative contribution of natural and anthropogenic dust sources, however, remains largely uncertain. Although human activities disturb soils and therefore
Continuous-wave operation of λ=3.25 μm broadened-waveguide W quantum-well diode lasers up to T=195 K
Autor:
D. Z. Garbuzov, Ramon U. Martinelli, Donna W. Stokes, Christopher L. Felix, Igor Vurgaftman, H. Lee, John C. Connolly, M. Maiorov, A.R. Sugg, Gregory H. Olsen, William W. Bewley, Jerry R. Meyer, R. J. Menna
Publikováno v:
Applied Physics Letters. 76:256-258
Mid-infrared (λ=3.25 μm) broadened-waveguide diode lasers with active regions consisting of 5 type-II “W” quantum wells operated in continuous-wave (cw) mode up to 195 K. At 78 K, the threshold current density was 63 A/cm2, and up to 140 mW of
Autor:
Yu V Il'in, A F Solodkov, D. Z. Garbuzov, S D Yakubovich, I. S. Tarasov, A. V. Ovchinnikov, N V Shelkov, D A Kocherov
Publikováno v:
Soviet Journal of Quantum Electronics. 21:251-255
A study was made of the dynamics of the emission of radiation from buried mesa-stripe injection lasers consisting of (InGa) AsP/InP double heterostructures with ultrathin (dα = 12–25 nm) active layers and separate confinement (λ = 1.3 μm). Depen
Autor:
V. Khalfin, R. J. Menna, H. Milgazo, John C. Connolly, D. Z. Garbuzov, R. Matarese, M. Maiorov
Publikováno v:
IEEE Photonics Technology Letters. 11:961-963
We demonstrate high-power operation of both individual broad-waveguide separate-confinement-heterostructure quantum-well InGaAsP-InP laser diodes and 1-cm-wide arrays emitting at 1.83 /spl mu/m. Despite strong dependence of threshold current density
Publikováno v:
Applied Physics Letters. 74:2990-2992
The dependence of spontaneous emission intensity on both current and temperature has been studied for 2.3–2.6 μm InGaAsSb/AlGaAsSb separate-confinement-heterostructure quantum well diode lasers operating in the continuous wave and pulsed regimes.
Publikováno v:
Soviet Journal of Quantum Electronics. 20:1320-1323
An estimate is obtained of the maximum output power P cW of an injection semiconductor laser per unit width of the active stripe. It is assumed that the power is limited by the optical strength of the mirrors. Several variants of heterostructures wit
Publikováno v:
SPIE Proceedings.
Significant performance improvement of the Er(0.5%):YAG diode pumped solid state laser (DPSSL) has been achieved by pump diode spectral narrowing via implementation of an external volumetric Bragg grating (VBG). Without spectral narrowing, with a pum
Publikováno v:
SPIE Proceedings.
Significant performance improvement of the Er(0.5%):YAG diode pumped solid state laser (DPSSL) has been achieved by pump diode spectral narrowing via implementation of external volumetric Bragg grating (VBG). Without spectral narrowing, with a pump p