S. James Allen, received a Ph.D. degree in electrical engineering from M.I.T. in 1965.  He was appointed Professor of  Physics and Director of the Quantum Institute at UCSB in 1991, and recently served as Chair of Physics, 2000-05.  Prior to that, he had been a member of technical staff at Bell Labs, where he was recognized as a “Distinguished Member of Technical Staff”,  had availed himself of a Bell Labs supported leave at the Royal School of Mines , Imperial College London and later joined Bellcore, as District Research Manager of Solid State Physics Research.  He has also been an adjunct professor at Northeastern University and at Princeton University.   Professional service has included election as Member at Large of the Executive Committee of the Division of Condensed Matter Physics of the A.P.S. where he served on the Strategic Planning Committee and on the Nominating Committee.  He has also served on the Editorial Board of Physical Review.  In 1995 he won a Humboldt Senior Science Award, is a Fellow of the American Physical Society and a Fellow of the American Association for the Advancement of Science.

 He has co-authored more than 200 publications on transport and terahertz excitations in semiconductor nano-structures, hot-electron dynamics, high temperature superconductivity, magnetism, superionic conductors, metal physics and clathrate inclusion compounds. He holds three patents.  Current research focuses on terahertz dynamics in semiconductor quantum structures far from equilibrium, Bloch oscillators, novel terahertz detectors and terahertz circular dichroism and dynamics of bio-polymers.

Positions available:  

Postdoc and GSR positions - 

•     Terahertz dynamics of proteins in solution, 

•     Electric field controlled magnetostatic waves, 

•     Plasmon electronics, 

•     Bloch oscillators

Teaching related

Winter 2006: Physics 21, General Physics

Fall 2005: Physics 6C, Introductory Physics 

Selected recent publications

"Absorption spectra of liquid water and aqueous buffers between 0.3 and 3.72 THz", Jing Xu, Kevin W. Plaxco and S.James Allen, J. Chem. Phys., 124, 036101 (2006).

“Loss and Gain in Bloch Oscillating Super-Superlattices: THz Stark Ladder Spectroscopy”, Peter Robrish, Jing Xu, Shigeki Kobayashi, Pavlos G. Savvidis, Borys Kolasa, Greg Lee, Dan Mars and S. James Allen, to be published, proceedings of MSS-12.  

“Bloch Oscillating Super-Superlattices”, P Robrish, J Xu, S Kobayashic, P G Savvidis, B Kolasa, G Lee, D Mars and S J Allen, to be published, proceedings NGS-12.

“Terahertz photoconductivity and plasmon modes in double-quantum-well field-effect transistors”, Peralta XG, Allen SJ, Wanke MC, Harff NE, Simmons JA, Lilly MP, Reno JL, Burke PJ, Eisenstein JP, App. Phys. Lett., 81, 1627 (2002).

“Magnetic anisotropy and interlayer coupling in Fe/sub 0.5/Co/sub 0.5/(100) films on GaAs(100)”, Pechan MJ, Compton RL, Bennett D, Chen LC, Palmstrom CJ, Allen SJ., J. of Appl. Phys., 89, 7514 (2001).

“Coherent transfer and electron teleportation in semiconductor double quantum well.”, Rufenacht M, Tsujino S, Allen SJ, Schoenfeld W, Petroff P, Phys. Stat. Solidi B-221, 407 (2000).

“Frequency doubling and tripling of terahertz radiation in a GaAs/AlAs superlattice due to frequency modulation of Bloch oscillations”, Winnerl S, Schomburg E, Brandl S, Kus O, Renk KF, Wanke MC, Allen SJ, Ignatov AA, Ustinov V, Zhukov A, Kop'ev PS, Appl. Phys. Lett., 77,1259 (2000).

“Quantum confinement without walls”, Tsujino S, Allen SJ, Thomas M, Eckhause T, Gwinn E, Rufenacht M, Zhang JP, Speck J, Sakaki H, Superlattices & Microstructures, 27, 469 (2000).

“Absorption of Terahertz Radiation by Plasmon Modes in a Grid-gated Double-Quantum-well Field-Effect Transistor,” V. V. Popov, X. G. Peralta, S. J. Allen, N. J. M. Noring, O. V. Polischuk, T. V. Teperik, and M. C. Wanke, J. Appl. Phys.  94, 3556 (2003).

“Terahertz Circular Dichroism Spectroscopy of Biomolecules”, Jing Xu, Jhenny Galan, Gerry Ramian, Pavlos Savvidis, Anthony Scopatz, Robert R, Birge, S. James Allen, Kevin Placo, to be published,  SPIE Proceedings, Vol. 5268, Conference on Chemical and Biological Standoff Detection.

“Resonant crossover of terahertz loss and gain in a Bloch oscillating InAs/AlSb super-superlattice.”, P.G. Savvidis, B. Kolasa, S.J. Allen, G. Lee, Phys. Rev. Lett., 92, 196802-1 (2004).

“Terahertz Circular Dichroism Spectroscopy:  A Potential Approach to Unbiased, in situ Life Detection,” J. Xu, G. J. Ramian, H. F. Galan, P. G. Savvidis, A. M. Scopatz, R. R. Birge, S. J. Allen, and K. W. Plaxco, Astrobiology, 3, 489-504 (2003) .

UCSB   Center for Terahertz Science and Technology

• Somewhat dated view of the facilities associated with the UCSB free-electron lasers.

• Titles and abstracts of publications from the UCSB FEL's through   ~July 2004.

• FEL2004 Trieste, Advancing Terahertz Science and Technology with the UCSB Free-electron Lasers