Education
History:
University
of California, Santa Barbara
Ph. D.: Physics,
March 1996
University of California, Berkeley
B.A.: Physics
―Graduated with Honors, May
1987
Work
Experience:
Engineer/Radiation
Safety Officer
National Technical Systems, Inc. (formally Mechtronic
Solutions), Albuquerque, NM (06/2010 – 07/2010 and 09/2010 - 11/2011)
• Program manager of
the Explorer/Northstar project to supply Sandia National Laboratory with gamma
ray detectors.
• Served as the lead
radiation detection expert on the New Xenon Sampler (NXS) project for the United States’
nuclear test ban treaty verification program.
• Radiation Safety
Officer, responsible for implementing and managing the NTS radiation safety
program.
• Developed a human machine interface (HMI) to control programmable logic controllers (PLCs) for a Ground Whole Air Collector
System (GWACS) for the US Air Force.
• Winner of
performance based awards, such as Employee
of the Month
Manufacturing
Test Engineer
PerkinElmer Optoelectronics, Santa Clara, CA
(05/2005 – 01/2009)
• Responsible for implementing performance and quality testing of a-Si digital X-ray detectors at several different stages of production.
• Responsible for
providing the interpretation of test results and statistical data analysis
support to process integration engineers and yield improvement teams.
• Received several
performance based awards, including the Employee
of the Month, Above and Beyond Award,
and the Business Impact Award.
Senior
Scientist and Program Leader
Bookham Technology Ltd., Oxfordshire, United Kingdom
(03/2001 – 10/2002)
• Responsible for the
design, testing, and modeling of laser devices for optoelectronic communication
systems.
• Participated in
studies on the effect that impurities and defect states have on the performance
of silicon traveling-wave photodetectors, and presented research reports to
senior management.
Research
Associate
Dept. of Physics, Vanderbilt
University, Nashville, TN
(04/1996 – 04/2000)
Conducted
experiments involving the laser spectroscopy of materials and developed
theoretical models of the results.
• Discovered a new method of studying the
dynamics and optical properties of molten semiconductors.
• Presented the first experimental
evidence that molten GaAs behaves as a metal on thermal timescales.
Research/Teaching
Assistant
University
of California, Santa Barbara (09/1987- 04/1996)
• Ph.D. Dissertation:
Superlattice Transport in Terahertz
Electric Fields.
• Conducted a series
of groundbreaking experiments involving semiconductor nanostructures under the
influence of terahertz radiation from a free-electron laser. These experiments
resulted in the first observation of:
• Photon-assisted tunneling
in semiconductors.
• Multiphoton-assisted
tunneling in semiconductors.
• Dynamic localization
in superlattices.
• Absolute Negative
Conductance in semiconductor superlattices.
• Performed
theoretical studies of electron transport in solids using renormalization group
theory techniques.
• Conducted independent
research in theoretical particle physics and quantum gravity and published the
results.
• Collaborated with
the NA31 group at the Centre Européen pour la Recherche Nucleaire (CERN), Geneva, Switzerland,
studying CP violation in K-meson decays.
• Led discussion
sections for graduate and undergraduate courses.
Research
Assistant
Lawrence Berkeley
Laboratory, Berkeley, CA (1985 – 1986)
Participated
in intermediate energy heavy ion physics experiments using the Bevalac heavy
ion accelerator.
Computer Skills:
Operating Systems:
Linux/Unix, Windows, MacOS and VAX/VMS.
Programming Languages: C/C++, Visual C++, Python, Perl, FORTRAN, HTML, MathML, and experience with shell
programming, OpenGL, and Java.
Numerical libraries:
Numerical Recipes, IMSL, LAPACK, BLAS, GNU Scientific Library, and NURBS
libraries, etc.
Other: National
Instruments Labview certified, MiniTab/Six Sigma, Mathematica, Matlab, Mathcad, Tex,
Igor, Sigma Plot, Crosslight laser design software, Kaleidagraph, Excel, the GIMP, CorelDraw, Procmail, Samba,
Sendmail, and PowerPoint. Experience writing
documents using the DocBook document type definition (DTD), and processing them
using Extensible Stylesheet Language Transformation (XSLT) engines.
Languages: Italian
Publications and Invited Speaking Engagements:
For a complete list, please see http://www.scifree.org/cv.html
Laboratory Skills:
Measurement equipment: Electrical spectrum analyzers, monocrometers,
spectrometers, OSAs, holographic filters, voltage and current sources,
integrating spheres, oscilloscopes, goniometric radiometers, photodetector
arrays, bolometers, phototubes, pyroelectric detectors, PEM detectors, scanning
electron microscopes, optical fiber equipment, pulse generators, lock-in
amplifiers, geometrical optics equipment and lenses. Laser diode drivers,
temperature control equipment: including thermocouples, temperature
transducers, TEC controllers, and other cryogenic equipment. Various electronic
and manual micropositioning equipment, and piezoelectric detectors.
Superconducting magnets for high magnetic field characterization experiments.
Lasers: Semiconductor lasers, free-electron lasers, CO2, TEA, YAG,
Argon, HeNe, and Ti:Saphire lasers, using pulse durations ranging from
picosecond, nanosecond, and microsecond to CW. Wavelengths ranging from
millimeter to UV.
Experimental optics methods and
techniques: Sum-frequency
generation, harmonic generation, Raman spectroscopy, laser pump-probe, optical
tomography, fluorescence spectroscopy, FTIR spectroscopy, and relative
intensity noise measurements.
Electronic/magnetic characterization
methods: Van der Pauw methods and quantum
transport measurements: including quantum Hall and Shubnikov-de Haas
magnetoresistance measurements, capacitance-voltage measurements, and
considerable experience doing current-voltage and photocurrent measurements on a
broad range of semiconductor devices.
Cleanroom/processing equipment: Reactive ion etcher, e-beam evaporator, thermal
evaporator, oxygen plasma etchers, photolithographic aligners, wire bonders,
solder bonders, SiO2 deposition equipment, rapid thermal annealer,
scanning tunneling microscope, and wet chemical etching equipment.
Publications:
1. Time-resolved infrared transmittance and
reflectance of a propagating melt in GaAs, B. J. Keay, M. Mendenhall, and
G.S. Edwards, Phys. Rev. B 60, 10898 (1999).
2.
THz response of GaAs/AlGaAs
superlattices: from classical to quantum dynamics, S. Zeuner,
B. J. Keay et al., Superlattices and
Microstructures 22, 149 (1997).
3.
Virtual states and photon-assisted
tunneling, B. J. Keay, C. Aversa, Phys. Rev. B 54, R2284 (1996).
4.
Virtual states, dynamic localization,
absolute negative conductance and stimulated multiphoton emission in
semiconductor superlattices, B. J. Keay et
al., Semicond. Sci. Techn. 11, 1596 (1996).
5.
Inverse Bloch-oscillator: strong
terahertz-photocurrent resonance at the Bloch frequency, K. Unterrainer, B.
J. Keay et al., Phys. Rev. Lett. 76, 2973 (1996).
6.
Transition from classical to quantum
response in semiconductor superlattices at THz frequencies, S. Zeuner, B.
J. Keay et al., Phys. Rev. B 53,
R1717 (1996).
7.
Photon-assited transport through
semiconductor quantum structures in intense terahertz electric fields, S.
J. Allen et al., Physica B 227, 367 (1996).
8.
Dynamic localization, absolute negative
conductance and stimulated, multiphoton-emission in sequential resonant
tunneling semiconductor superlattices, B. J. Keay et al., Phys. Rev. Lett. 75,
4102 (1995).
9.
Photon-assisted electric field domains
and multiphoton-assisted tunneling in semiconductor superlattices, B. J.
Keay et al., Phys. Rev. Lett. 75, 4098 (1995).
10. Photon-assisted electric field domains and
multiphoton-assisted tunneling in antenna coupled semiconductor superlattices,
B.J. Keay et al., in Hot Carriers in Semiconductors: Proceedings
of the Ninth International Conference, K. Hess, J-P. Leburton, U. Ravaioli
eds., Chicago, Illinois (Plenum, New York, 1996).
11. Strong terahertz-photocurrent resonances in
miniband superlattices at the Bloch frequency, K. Unterrainer, B.J. Keay et al., in Hot Carriers in Semiconductors: Proceedings of the Ninth International
Conference, K. Hess, J-P. Leburton, U. Ravaioli eds., Chicago, Illinois
(Plenum, New York, 1996).
12. Multphoton-assisted
tunneling, dynamic localization and absolute negative conductance, B. J.
Keay et al., Surface Science 362,
176 (1996).
13. Sequential resonant tunneling via photon virtual states in semiconductor
superlattices, B. J. Keay et al.,
The Physics of Semiconductors:
Proceedings of the 22nd International Conference, Vancouver,
2, 1055, D.J. Lockwood ed., Canada (World Scientific,
1995).
14. Terahertz,
photon-assisted tunneling in semiconductor nanostructures, S.J. Allen, B.J.
Keay et al., Nanostructures and Quantum Effects, ed. by H. Sakaki and H. Noge,
(Springer Verlag, Heidelberg, Germany 1994).
15. Probing
terahertz dynamics in semiconductor nanostructures with the UCSB free-electron
lasers, with S.J. Allen et al.,
J. of Luminescence 60 - 61, 250 (1994).
16. Superlattice
transport in intense teraherz electric fields, B. J. Keay et al., Surface Science 305,
385 (1994).
17. Probing
terahertz electron dynamics in semiconductor nanostructures with the UC Santa
Barbara FELs, with J.P. Kaminski et
al., Nuclear Instruments and Methods in Physics Research, A341, 169 (1994).
18. Electrical
transport properties of superlattices under intense terahertz electric fields,
P.S.S. Guimaraes, B. J. Keay et al.,
Brazilian J. Phys. 24, 163 (1994).
19.
Photon-mediated sequential resonant
tunneling in intense terahertz electric fields, P.S.S. Guimaraes, B. J.
Keay et al., Phys. Rev. Lett. 70,
3792 (1993).
20. S1XS2
wormholes, B. J. Keay and R. Laflamme, Phys. Rev. D 40,
2118 (1989).
21. Subthreshold
production of strange hadrons in relativistic heavy ion collisions, with S.
Trentalange et al., Intersections Between Particle and Nuclear
Physics: AIP Conference Proceedings 150, editor D.F. Geesaman (AIP, NY
1986), pp 814 - 820.
Invited
Talks:
Multiphoton-assisted tunneling, dynamic localization and
absolute negative conductance in THz driven superlattices, Workshop on Millimeter Wave Spectroscopy of Solids, Los Angeles, CA,
March 25 - 27, 1996.
Superlattice transport in terahertz electric fields, 9th International Winterschool on New Developments in
Solid State Physics, Nanostructure Physics and Technology, Mauterndorf, Province of Salzburg, Austria, February 19 -23, 1996.
Multiphoton-assisted tunneling, dynamic localization and
absolute negative conductance in THz driven superlattices, Phasdom-95, Annual Meeting of the European Community on
the Physics and Technology of Mesoscopic Structures, Cambridge, England,
October 1-5, 1995.
Dynamic localization and negative absolute conductance in
terahertz driven semiconductor superlattices, FEL'95, 2nd Annual FEL User Workshop, New York, New York,
August 21-25, 1995.
Multiphoton-assisted tunneling, dynamic localization and
absolute negative conductance,
EP2DS-11, 11th International Conference on the Electronic Properties of
Two-Dimensional Systems, Nottingham,
England, August
7-11 1995.
Contributed Talks:
Time-resolved infrared transmittance and reflectance of a
propagating melt in GaAs, March
Meeting of the American Physical Society, Atlanta,
Georgia, March
20-25, 1999.
Time-resolved infrared transmittance and reflectance
spectroscopy of optical-pulse-induced phase transitions in GaAs, FEL'98, Williamsburg,
Virginia, August 1998.
Time-resolved infrared transmittance and reflectance
spectroscopy of optical-pulse induced phase transitions in GaAs, SESAPS, Nashville,
Tennessee, November 1997.
Dynamic localization, absolute negative conductivity and
stimulated, multiphoton-emission in sequential resonant tunneling semiconductor
superlattices, The International
Conference on Intersubband Transitions in Quantum Wells: Physics and
Applications, ITQW95, Israel,
October 23-26, 1995.
Dynamic localization and absolute negative resistance in
terahertz driven semiconductor superlattices, The Ninth International Conference on Hot Carriers in Semiconductors,
HCIS-9, Chicago, July 31- August 4, 1995.
Photon-assisted tunneling in semiconductor superlattices
antenna coupled to intense terahertz electric fields, March APS Meeting, San
Jose, CA, 20-25 March
1995.
Superlattice transport in intense terahertz electric
fields, EP2DS-10, 10th International Conference
on the Electronic Properties of Two-Dimensional Systems, Newport, RI, USA, 31 May - 4 June 1993.
Superlattice transport in intense terahertz electric fields, March APS Meeting, Seattle,
WA, 22-26 March 1993.
References available on request