Curriculum Vitae

Born:
March 31, 1966.

Education:
B.S. (with honors) California Institute of Technology, 1988
Ph.D. Harvard University, January 1996.
Thesis: ``A Precision Comparison of the Antiproton to Proton charge-to-mass Ratios''

Experience

Present Research:
Double Bulb Rubidium Maser:
A novel atomic clock which may provide short term frequency stability superior to that of a room temperature hydrogen maser, but in a smaller and more robust unit.

• Laser diode optical pumping.
• Wall coatings which allow hundreds of bounces while maintaining hyperfine coherence.

Studying Laser Diode Arrays:


• Characterization of broadband, high power laser diode arrays.
• Injection locking of laser diode arrays for narrowing output spectrum.

Cryogenic Hydrogen Maser:
The 0.5 K hydrogen maser may prove the most stable existing clock. Studies with the maser will also provide improved understanding of low temperature hydrogen-hydrogen collisions.

1990-1996: Precision comparison of antiproton and proton charge-to-mass ratios.

• Cryogenics: maintained a 4K apparatus for ultra high vacuum storage of antiproton and a 6 Tesla superconducting magnet.
• High resolution and high sensitivity radiofrequency measurement necessary for measuring with a resolution of 10^-10, the signal from a single elementary particle.
• Study of magnetic environment: systematic study of the spatial and temporal variations of the field from a persistent current superconducting magnet.

1986-1988:
Electron Beam Ion Trap - Measured the electron beam energy width via radiative X-ray lines.
Programming

• Data acquisition in Labview and Pascal.
• Data analysis in fortran, C and Mathematica.
• Experience with forth, C++, assembly language and basic.
Teaching

• 1989: Teaching Fellow, Introductory Physics - Harvard.
• 1988: Head Teaching Assistant, Applied Mathematics - Caltech.
• 1987: Teaching Assistant, Applied Mathematics - Caltech.
Interests
Music, Frisbee, squash, French and hiking.
References
Professor Gerald Gabrielse. Harvard University, Cambridge, MA.
Professor Luis Orozco. SUNY, Stony Brook, New York.
Dr. Ronald Walsworth. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA.

Publications

1. ``Antiprotons, Positrons and Antihydrogen'',
   G. Gabrielse, W. Jhe, D. Phillips, R Kaiser, H. Kalinowsky, J. Groebner; Mat. Sci. Forum 105-110, 75 (1992).
   
2. ``Cylindrical Penning Traps and Self-Shielding Superconducting Solenoids for High Precision Experiments'',
   W. Jhe, D. Phillips, L. Haarsma, J. Tan, G. Gabrielse; Physica Scripta 46, 264 (1992); RPS 20, 44 (1993).
   
3. ``Precision Mass Measurements of Antiprotons in a Penning Trap'',
   W. Jhe, D. Phillips, L. Haarsma, J. Tan, G. Gabrielse; Physica Scripta 46, 268 (1992); RPS 20, 48 (1993).
   
4. ``Extremely Cold Antiprotons for Mass Measurements and Antihydrogen'',
   G. Gabrielse, W. Jhe, D. Phillips, W. Quint, C. Tseng, L. Haarsma, K. Abdullah, J. Groebner, H. Kalinowsky; in Atomic Physics 13, Thirteenth International Conference on Atomic Physics, (American Institute of Physics, New York, NY), 85 (1993).
   
5. ``Extremely Cold Antiprotons for Antihydrogen Production'',
   G. Gabrielse W. Jhe, D. Phillips, W. Quint, C. Tseng, L. Haarsma, K. Abdullah, J. Groebner and H. Kalinowsky; Hyper. Int. 76, 81 (1993).
   
6. ``Observing a Single Trapped Antiproton'',
   G. Gabrielse, W. Jhe, D. Phillips, W. Quint, H. Kalinowsky, J. Groebner; Nuclear Physics A 558, 701c (1993).
   
7. ``A Single Trapped Antiproton and Antiprotons for Antihydrogen Production'',
   G. Gabrielse, W. Jhe, D. Phillips, W. Quint, L. Haarsma, K. Abdullah, H. Kalinowsky, J. Groebner; Hyper. Int. 81 5 (1993).
   
8. ``Special Relativity and the Single Antiproton: Forty-fold Improved Comparison of antiproton and proton Charge-to-Mass Ratios'',
   G. Gabrielse, D. Phillips, W. Quint, H. Kalinowsky, G. Rouleau, W. Jhe; Phys. Rev. Lett., 74, 3544 (1995).
   
9. ``New Comparison of antiproton and proton Charge-to-Mass Ratios,
   G. Gabrielse, D. Phillips, W. Quint, H. Kalinowsky, G. Rouleau, W. Jhe; in Proc. of LEAP '94 Conference, 462 (1995).
   
10. ``Improved Comparison of antiproton and proton Charge-to-Mass Ratios'',
    D. Phillips, W. Quint, G. Gabrielse; Phys. Scr. T59, 307 (1995).
    
11. ``Injection Locking of Fiber-Coupled Laser Diode Arrays'',
    M. Humphrey, D. F. Phillips and R. L. Walsworth; (unpublished).
    
12. ``Evaporative Coating of Rb Maser Cells'',
    D. F. Phillips; (unpublished).
    
13. ``Characterization and Stabilization of Opto Power Fiber-Coupled Laser Diode Arrays'',
    D. F. Phillips, G. P. Wong, D. Bear, R. E. Stoner and R. L. Walsworth; Rev. Sci. Instrum. (in press).