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24 results on '"Law, Daniel C."'

2. Scanning tropospheric ozone and aerosol lidar with double-gated photomultipliers

Author

Machol, Janet L., Marchbanks, Richard D., Senff, Christoph J., McCarty, Brandi J., Eberhard, Wynn L., Brewer, William A., Richter, Ronald A., Alvarez, Raul J., II, Law, Daniel C., Weickmann, Ann M., and Sandberg, Scott P.

Subjects
Atmospheric ozone -- Properties, Atmospheric ozone -- Measurement, Troposphere -- Research, Aerosols -- Properties, Aerosols -- Measurement, Optical radar -- Usage, Optical radar -- Design and construction, Photoelectric multipliers -- Usage, Astronomy, Physics
Abstract

The Ozone Profiling Atmospheric Lidar is a scanning four-wavelength ultraviolet differential absorption lidar that measures tropospheric ozone and aerosols. Derived profiles from the lidar data include ozone concentration, aerosol extinction, and calibrated aerosol backscatter. Aerosol calibrations assume a clear air region aloft. Other products include cloud base heights, aerosol layer heights, and scans of particulate plumes from aircraft. The aerosol data range from 280 m to 12 km with 5 m range resolution, while the ozone data ranges from 280 m to about 12 km with 100 m resolution. In horizontally homogeneous atmospheres, data from multiple-elevation angles is combined to reduce the minimum altitude of the aerosol and ozone profiles to about 20 m. The lidar design, the characterization of the photomultiplier tubes, ozone and aerosol analysis techniques, and sample data are described. Also discussed is a double-gating technique to shorten the gated turn-on time of the photomultiplier tubes, and thereby reduce the detection of background light and the outgoing laser pulse. OCIS codes: 010.3640, 010.4950, 040.5250, 280.1100, 280.1120, 280.1910.

Published
2009

3. Observational Techniques: Sampling the Mountain Atmosphere

Author

Banta, Robert M., primary, Shun, C. M., additional, Law, Daniel C., additional, Brown, William, additional, Reinking, Roger F., additional, Hardesty, R. Michael, additional, Senff, Christoph J., additional, Brewer, W. Alan, additional, Post, M. J., additional, and Darby, Lisa S., additional

Published
2012
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4. Mechanism of arsine adsorption on the gallium-rich GaAs(001)-(4 x 2) surface

Author

Fu, Qiang, Li, Lian, Li, Connie H., Begarney, Michael J., Law, Daniel C., and Hicks, Robert F.

Subjects
Adsorption -- Research, Gallium arsenide -- Research, Chemicals, plastics and rubber industries
Abstract

Research into the kinetics and mechanism of arsine adsorption on the (4 x 2) surface of gallium arsenide (001) is presented. Arsine decomposes on the GaAs(001)-(4 x 2) surface by first forming a dative bond with the gallium dimers.

Published
2000

7. GaInP/GaAs dual junction solar cells on Ge/Si epitaxial templates

Author

Archer, Melissa J., Law, Daniel C., Mesropian, Shoghig, Haddad, Moran, Fetzer, Christopher M., Ackerman, Arthur C., Ladous, Corinne, King, Richard R., and Atwater, Harry A.

Subjects
parasitic diseases, technology, industry, and agriculture, Caltech Library Services
Abstract

Large area, crack-free GaInP/GaAs double junction solar cells were grown by metal organic chemical vapor deposition on Ge/Si templates fabricated using wafer bonding and ion implantation induced layer transfer. Photovoltaic performance of these devices was comparable to those grown on bulk epi-ready Ge, demonstrating the feasibility of alternative substrates fabricated via wafer bonding and layer transfer for growth of active devices on lattice mismatched substrates.

Published
2008

8. Recent progress of Spectrolab high-efficiency space solar cells

Author

Law, Daniel C., additional, Boisvert, J. C., additional, Rehder, E. M., additional, Chiu, P. T., additional, Mesropian, S., additional, Woo, R. L., additional, Liu, X. Q., additional, Hong, W. D., additional, Fetzer, C. M., additional, Singer, S. B., additional, Bhusari, D. M., additional, Edmondson, K. M., additional, Zakaria, A., additional, Jun, B., additional, Krut, D. D., additional, King, R. R., additional, Sharma, S. K., additional, and Karam, N. H., additional

Published
2013
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10. Recent progress of Spectrolab high-efficiency space solar cells

Author

Law, Daniel C., primary, Liu, X.Q., additional, Boisvert, J.C., additional, Redher, E.M., additional, Fetzer, C.M., additional, Mesropian, S., additional, King, R.R., additional, Edmondson, K.M., additional, Jun, B., additional, Woo, R.L., additional, Krut, D.D., additional, Chiu, P.T., additional, Bhusari, D.M., additional, Sharma, S.K., additional, and Karam, N.H., additional

Published
2012
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21. Advances in High-Efficiency III-V Multijunction Solar Cells

Author

King, Richard R., primary, Law, Daniel C., additional, Edmondson, Kenneth M., additional, Fetzer, Christopher M., additional, Kinsey, Geoffrey S., additional, Yoon, Hojun, additional, Krut, Dimitri D., additional, Ermer, James H., additional, Sherif, Raed A., additional, and Karam, Nasser H., additional

Published
2007
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24. Recent progress of Spectrolab high-efficiency space solar cells

Author

Taylor, Edward W., Cardimona, David A., Law, Daniel C., Boisvert, J. C., Rehder, E. M., Chiu, P. T., Mesropian, S., Woo, R. L., Liu, X. Q., Hong, W. D., Fetzer, C. M., Singer, S. B., Bhusari, D. M., Edmondson, K. M., Zakaria, A., Jun, B., Krut, D. D., King, R. R., Sharma, S. K., and Karam, N. H.

Published
2013
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