Zobrazeno 1 - 10
of 25
pro vyhledávání: '"E. I. Chen"'
Autor:
Y Yang, Z H I X I Yu, W E I W E I Chen, X I A O Y U Wang, K E X I N Peng, W E I S I Yin, Y I L I N Pan, B E I B E I Du, P I N G Yang
Publikováno v:
European Heart Journal: Acute Cardiovascular Care. 12
Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Natural Science Foundation of China (NSFC). Introduction Numerous epidemiologic studies have confirmed that Standard Modifiab
Autor:
E. I. Chen, G. E. Hofler, Fred A. Kish, D. A. Vanderwater, T. D. Ostentowski, J.-W. Huang, I. H. Tan
Publikováno v:
Journal of Electronic Materials. 29:188-194
The AlGaInP/GaP wafer-bonded transparent-substrate (TS) light-emitting diodes (LEDs) have been shown to exhibit luminous efficiencies exceeding many conventional lightning sources including 60 W incandescent sources. This paper will demonstrate the f
Publikováno v:
Journal of Applied Physics. 79:8204-8209
Data are presented on the photopumped laser operation of planar AlAs–GaAs superlattice (SL) minidisk lasers. The SL minidisk (70 A AlAs, 30 A GaAs; 100 periods; ∼37 μm diameter) is defined by impurity‐induced layer disordering (IILD), followed
Publikováno v:
Journal of Applied Physics. 74:797-801
Data are presented on the 300 K (and 77 K) continuous photopumped laser operation of AlyGa1−yAs‐GaAs‐InxGa1−xAs quantum‐well heterostructures (QWHs) that have been oxidized (H2O vapor+N2, 425 °C) selectively along the high‐band‐gap het
Autor:
C. P. Kocot, D. Collins, F. A. Kish, P.N. Grillot, T. S. Tan, E. I. Chen, I.-H. Tan, Gloria E Hofler, M. Ochiai-Holcomb, Nathan F. Gardner, M. G. Craford, Michael R. Krames, S. A. Stockman, M. Hueschen, G. Sasser, Carrie Carter-Coman, B. Loh, Herman C Chui, J. Posselt, J.-W. Huang
Publikováno v:
Applied Physics Letters. 75:2365-2367
A truncated-inverted-pyramid (TIP) chip geometry provides substantial improvement in light extraction efficiency over conventional AlGaInP/GaP chips of the same active junction area (∼0.25 mm2). The TIP geometry decreases the mean photon path-lengt
Autor:
T. S. Tan, S. A. Stockman, Nathan F. Gardner, J.-W. Huang, F. A. Kish, Michael R. Krames, Herman C Chui, C. P. Kocot, N. Moll, E. I. Chen
Publikováno v:
Applied Physics Letters. 74:2230-2232
Improvement of 1.4× in the external quantum efficiency and luminous efficiency (lm/W) of transparent-substrate (AlxGa1−x)0.5In0.5P/GaP light-emitting diodes is demonstrated. The improvement is accomplished by reducing the thickness of the active l
Publikováno v:
Applied Physics Letters. 69:2882-2884
Data are presented demonstrating double injection and negative resistance in stripe‐geometry oxide‐aperture AlyGa1−yAs–GaAs–InxGa1−xAs quantum well heterostructure lasers. The buried oxide laser structures are defined, in current and cavi
Publikováno v:
Journal of Applied Physics. 79:8829-8831
Data are presented demonstrating the effect that cavity length, and thus Q, has upon quantum well heterostructure edge‐emitting laser diodes that are reduced to microcavity thickness. The lasers, with reduced mode density and enhanced spontaneous e
Publikováno v:
Applied Physics Letters. 68:2035-2037
Data are presented demonstrating photopumped laser operation of a planar photonic lattice (∼1 μm thick) that is comprised of 9 μm disks with 2 μm separation arranged in a two‐dimensional hexagonal close‐packed pattern. The active region of e
Publikováno v:
Applied Physics Letters. 68:1540-1542
Data are presented on the 300 K photopumped (pulsed) laser operation of ultrathin (∼0.15 μm) planar microdisk lasers. The tiny lasers employ the wet oxidation of an AlGaAs layer beneath the disks to form semiconductor cavities that are in solid co