The Optics Laboratory

Group of Hans Hallen, North Carolina State University Physics Department

Some of the Lab's Publications

(versions not too different from that published)

C.L. Jahncke, E.J. Ayars, and H.D. Hallen, "The effects of probe boundary conditions and propagation on nano-Raman spectroscopy," Journal of Microscopy 209, Pt 1, in press (2003).
H. D. Hallen and C.L. Jahncke, "The electric field at the apex of a near-field probe: implications for nanoRaman spectroscopy," J. Raman Spectroscopy in press (2003) -- An invited paper.
E.J. Ayars, C.L. Jahncke, M.A. Paesler, and H.D. Hallen, "Fundamental differences between micro- and nano-Raman spectroscopy," Journal of Microscopy 202, 142-7 (2001).
C.L. Jahncke, E.J. Ayars, and H.D. Hallen, "Raman selection rules in the presence of an electric field gradient," Proceedings of Microscopy and Microanalysis, Quebec City, Canada, July (2002).
Eric Ayars and H.D. Hallen, "Surface enhancement in near-field Raman spectroscopy," Appl. Phys. Lett. 76 (26) 3911-13 (2000).
C.L. Jahncke, H.D. Hallen, and M. A. Paesler, "Nano-Raman spectroscopy and imaging with the near-field scanning optical microscope," J. Raman Spectroscopy, 27, 579-586 (1996) -- An invited paper.
C.L. Jahncke, M. A. Paesler, and H.D. Hallen, "Raman imaging with near-field scanning optical microscopy," Appl. Phys. Lett. 67, (17), 2483-2485 (1995).
H. D. Hallen, A. La Rosa, and C.L. Jahncke, "Near-field scanning optical microscopy and spectroscopy for semiconductor characterization," Physica Status Solidi (a) 152, 257-268 (1995).
H. D. Hallen, M. A. Paesler and C. L. Jahncke, "Raman Spectroscopy: Probing the Border Between Near-Field and Far-Field Spectroscopy," SPIE Proceedings 3467 (1998).
C.L. Jahncke and H. D. Hallen."Near-field Raman Spectra: surface enhancement, z-polarization, fiber Raman background, and Rayleigh scattering", 9th annual meeting of IEEE Lasers and Electro-Optics Society (LEOS) 96 conference proceedings volume 1, pp. 176-177.

T. S. Yang, A. Duel-Hallen, "Adaptive Modulation Using Outdated Samples of Another Fading Channel," Proceedings of WCNC’02, Orlando, FL, March 17-21, 2002.

S. Hu, T. Eyceoz, A. Duel-Hallen, H. Hallen, "Transmitter Antenna Diversity and Adaptive Signaling Using Long Range Prediction For fast fading DS/CDMA Mobile radio Channels," Proc. of IEEE Wireless Commun. and Networking Conf. WCNC'99, Vol. 2, 1999, pp. 824 — 828.

T. Eyceoz, S. Hu, A. Duel-Hallen, H. Hallen, "Adaptive Prediction, Tracking and Power Adjustment for Frequency Non-Selective Fast Fading Channels," Proc. the Commun. Theory Mini-Conference, ICC'99, June 1999, pp.1 - 5.

S. Hu, H. Hallen and A. Duel-Hallen, "Physical Channel Modeling, Adaptive Prediction and Transmitter Diversity for Flat Fading Mobile Channels," Proc. IEEE Workshop on Signal Processing Advances in Wireless Commun., SPAWC'99, May 1999, pp.387 - 390.

Nano-Scale Mapping of Carrier Lifetime:

Near-Field Scanning Optical Microscopy Technique Related:

Scanning Hall Probe Microscopy:

H.D. Hallen, A. M. Chang, R. Miller, L. N. Pfeiffer, K. West, and H. F. Hess, "Penetration of Laterally Quantized Flux Lamina into a Superconducting Wire Network," Solid State Communications 99 (9), 651-654 (1996).
H.D. Hallen, R. Seshadri, A.M. Chang, R. Miller, L.N. Pfeiffer, K. West, C.A. Murray, and H. F. Hess, "Direct spatial imaging of vortices in a superconducting wire network," Phys. Rev. Lett. 71, 3007 (1993).
A.M. Chang, H.D. Hallen, H.F. Hess, H.L. Kao, J. Kwo, A. Sudbø, and T.Y. Chang, "Scanning Hall probe microscopy of a vortex and field fluctuations in La1.85Sr0.15CuO4 films," Europhys. Lett. 20, 645 (1992).
A.M. Chang, H.D. Hallen, H.F. Hess, H.L. Kao, J. Kwo, R. Wolf, J. van der Zeil, and T.Y. Chang, "Scanning Hall probe microscopy," Appl. Phys. Lett. 61, 1974 (1992).
H.D. Hallen, H.F. Hess, A.M. Chang, L.N. Pfeiffer, K.W. West, and D.B. Mitzi, "High- resolution scanning Hall probe microscopy," SPIE Proceedings 1855, 152 (1993).

Ballistic Electron Emission Microscopy (BEEM):

Moving subsurface metal atoms with few-volt electrons -

H.D. Hallen, A. Fernandez, T. Huang, R.A. Buhrman, and J. Silcox, "Hot electron interactions at the passivated gold-silicon interface," Phys. Rev. Lett. 69, 2931 (1992).
H.D. Hallen, "Ballistic electron emission microscopy: from electron transport studies to nanoscale materials science," a chapter for The Technology of Proximal Probe Lithography, edited by Christie Marrian, Vol. IS10 (SPIE, Bellingham, 1993).
H.D. Hallen and R.A. Buhrman, "BEEM, A probe of nanoscale modifications," Atomic and Nanometer-Scale Modification of Materials: Fundamentals and Applications, edited by Ph. Avouris (Kluwer, Dordrecht, 1993).
Fernandez, H.D. Hallen, T. Huang, R.A. Buhrman, and J. Silcox, "Ballistic electron studies and modification of the Au/Si interface," Appl. Phys. Lett. 57, 2826-8 (1991).
H.D. Hallen, A. Fernandez, T. Huang, R.A. Buhrman, and J. Silcox, "Gold-silicon interface modification studies," J. Vac. Sci. Technol. B9, 585-9 (1991).

Interface selection rules and transport -

H.D. Hallen, A. Fernandez, T. Huang, R.A. Buhrman, and J. Silcox, "Scattering and spectral shape in ballistic electron emission microscopy of NiSi2-Si(111) and Au-Si samples," Phys. Rev. B Rapid Communications 46, 7256-7259 (1992).
Fernandez, H.D. Hallen, T. Huang, R.A. Buhrman, and J. Silcox, "Elastic scattering in ballistic electron emission microscopy studies of the epitaxial NiSi2/Si(111) interface," Phys. Rev. B44, 3428-31 (1991).
Fernandez, H.D. Hallen, T. Huang, R.A. Buhrman, and J. Silcox, "Ballistic electron emission microscopy studies of the NiSi2/Si(111) interface," J. Vac. Sci. Technol. B9, 590-3 (1991).

Other:

S.A. Nelson, H.D. Hallen, R.A. Buhrman, "A structural and electrical comparison of thin SiO2 films grown on silicon by plasma anodization and rapid thermal processing to furnace oxidation," J. Appl. Phys 63, 5027-35 (1988).
P.E. Sulewski, A.J. Sievers, S.E. Russek, H.D. Hallen, D.K. Lathrop, and R.A. Buhrman, "Measurement of the superconducting energy gap in La-Ba-Cu oxide and La-Sr-Cu oxide," Physical Review B35, 5330-3 (1987).
R.P. Robertazzi, H.D. Hallen, R.A. Buhrman, "Coupled Josephson local oscillator and detector experiments in the terahertz regime," Proc SPIE - Int. Soc. Opt. Eng., 879, 65-8 (1988).
H.D. Hallen and M. A. Paesler, "Lens," an article for The Macmillan Encyclopedia of Physics, edited by John S. Rigden (Macmillan, New York, 1996).

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