Zobrazeno 1 - 8
of 8
pro vyhledávání: '"D. L. McDaniel"'
Autor:
D. L. McDaniel, Jonathon T. Olesberg, Thomas F. Boggess, S. A. Anson, Chi Yan, Michael E. Flatté, T. C. Hasenberg
Publikováno v:
Applied Physics Letters. 71:3764-3766
We report the operation of a III-V interband laser at a wavelength beyond 5 μm and temperatures above 90 K. The active region consists of a strain compensated broken gap four layer superlattice of InAs/Ga0.6In0.4Sb/InAs/Al0.3Ga0.42In0.28As0.5Sb0.5 g
Publikováno v:
IEEE Photonics Technology Letters. 9:1573-1575
We report optically pumped InAs-InGaSb-InAs-AlSb type-II quantum-well lasers at 3.84-4.48 /spl mu/m. Lasing was observed at temperatures up to 300 K with a characteristic temperature T/sub 0/ of 61.6 K. The average absorbed threshold power was only 0
Autor:
Rui Q. Yang, Chi Yan, D. L. McDaniel, S. J. Murry, Shin-Shem Pei, Chih-Hsiang Lin, M. Falcon, D. M. Gianardi
Publikováno v:
Conference Proceedings. LEOS '97. 10th Annual Meeting IEEE Lasers and Electro-Optics Society 1997 Annual Meeting.
The present data confirm theoretical predictions that semiconductor lasers based on type II InAs-InGaSb-InAs-AlSb QWs should have significant advantages over other structures in the MIR spectral region, due to both improved carrier confinement and th
Autor:
L F, Rosenberg, T, Krupin, J, Ruderman, D L, McDaniel, C, Siegfried, D P, Karalekas, R K, Grewal, D K, Gieser, R, Williams
Publikováno v:
Ophthalmology. 102(9)
To compare the efficacy of 0.5% and 1.0% apraclonidine in preventing laser-induced intraocular pressure (IOP) elevation after trabeculoplasty, neodymium: YAG (Nd: YAG) iridotomy, and capsulotomy.This is a prospective, masked, and randomized study of
Publikováno v:
Radiology. 152:187-193
Twenty-one screen-film systems were examined using contrast-detail-dose methods in order to determine which were most dose-efficient for use in pediatric radiography. With a given screen, dose efficiency in the noise-limited region (contrast approxim
Publikováno v:
Medical physics. 11(4)
Three sources of variability in a contrast-detail (CD) experiment have been quantitated: within-observer variance, between-observer variance, and sample variance. It is concluded that (1) it is more efficient to increase the numbers of replicated ima
Autor:
F. A. DiBianca, D. J. Wagenaar, J. E. Fetter, C. R. Tenney, M. J. Bolz, J. E. Vance, D. L. McDaniel, P. Granfors
Publikováno v:
Topical Meeting on Quantum-Limited Imaging and Image Processing.
The past decade has seen a marked increase in research on digital electronic detectors for x-radiographic imaging systems. This paper summarizes recent work on scanning strip detectors with emphasis on a new technique known as kinestatic charge detec
Publikováno v:
Medical physics. 11(4)
The relative dose efficiencies (RDE) of various antiscatter grids and air gaps were determined for conditions simulating those found in pediatric radiography, using phantoms representing a newborn child, a 5-yr-old and a 10-yr-old child. Our data ind