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Staff

Gary P. Wiederrecht

Chemist, Group Leader, Nanophotonics Group
Argonne National Laboratory
Chemistry Division, E161
9700 South Cass Avenue
Argonne, IL 60439-4831
Phone: 630-252-6963
Fax: 630-252-9289
E-mail: wiederrecht@anl.gov

Career Summary

Research interests include the photochemistry/photophysics of
nanoparticles and hybrid nanostructures, photochemical energy
conversion in mesophase environments, non-linear optical responses
resulting from photoinduced charge separation, and electron transfer
in biomimetic chromophores. Experimental expertise is in the areas
of time-resolved optical spectroscopies and scanning probe
microscopies, including near-field scanning optical microscopy.

Education

Ph.D., Chemistry, Massachusetts Institute of Technology, 1992
B.S. with Honors, Chemistry, Univ. of California at Berkeley, 1987

Awards and Honors

2005 Argonne National Laboratory Director's Award
2004 Argonne National Laboratory Pacesetter Award
1998 Presidential Early Career Award for Scientists and Engineers
1998 Department of Energy Young Scientist Award
1996 R&D 100 Award (R&D Magazine) for development of a
     photorefractive image processor
1987 Elizabeth D. North Prize for academic excellence at UC Berkeley
1986 Society for Applied Spectroscopy Scholarship

Professional Experience

9/2001-present: Group Leader, Nanophotonics Group, Argonne
National Laboratory, Argonne, IL
Research is in the areas of near-field optical microscopy of
functionalized nanoparticles and collective excitation phenomena
in nanostructures. Time-resolved spectroscopy of photochemically
active nanoparticles is an integral component of the research.
Nanostructures under study include self-assembled materials and
those created through electron beam lithography. Supervisory role
of two postdoctoral fellows and one part-time staff member.

7/1/1999-present: Chemist, Argonne National Laboratory, Argonne, IL

1995-1999: Assistant Chemist, Argonne National Laboratory,
Argonne, IL
Research is carried out in the areas of laser spectroscopy of
photochemical reactions in novel environments, such as liquid crystals
and mesoporous semiconductors.

1992-1995: Postdoctoral Fellow, Argonne National Laboratory,
Argonne, IL
Research in the areas of biomimetic supramolecular charge transfer
in solution and solid state. Developed Ti:sapphire femtosecond laser
system for ultrafast kinetic and spectral observations.

1987-1992: Research Assistant, Massachusetts Institute of Technology,
Cambridge, MA
Initiated first femtosecond multiple-pulse spectroscopy experiments
in collaboration with scientists at Bell Communications Research.
Investigated dynamical properties of soft optic phonon modes near
structural phase transitions in ferroelectric crystals.

1985-1987: University of California at Berkeley, Berkeley, CA
Designed and built supersonic beam chamber with mass spectrometer
for undergraduate research project. Developed laser vaporization
cluster sources to study carbon and metal clusters.

Professional Activities

Senior Fellow, University of Chicago and Argonne National
     Laboratory Consortium for Nanoscience Research,
     2001 - present
Theme Leader, Nanophotonics, Center for Nanoscale Materials,
     2001-present
Program Committee, International Society for Optical Engineering
     (SPIE) Annual Meeting, Organic Photorefractive Materials
     Conference, 1999-2002
Section Chair, 2004 Annual Meeting of the Federation of Analytical
     Chemsitry & Spectroscopy Societies, Nanomaterials for
      Photonics Symposia
Focus Topic Leader, 2005 Annual Meeting of the American
     Physical Society, Optical Properties of Nanostructures and
     Nanophotonics
Organizer, Center for Nanoscale Materials Near-field Scanning
     Optical Microscopy Workshop, February 5, 2004
Associate Editor, The European Physical Journal Applied
     Physics, 2005-present
Industrial Advisory Board, NSF-NSEC Center on
     Nanomanufacturing at the University of Illinois at
     Urbana-Champaign, 2005-present
Visiting Professor, University of Technology at Troyes, France,
     June-August 2005
Member of the American Chemical Society and the
     American Physical Society

Argonne Committees/Activities

Chemistry Division Safety Inspection Committee, 1998-2000
Chemistry Division Monday Morning Seminar Series, 1999
Chairman, Chemistry Division Monday Morning Seminar Series,
     2000 - 2002
Advisor, Chemistry Division Monday Morning Seminar Series,
     2002 - 2003
Center for Nanoscale Materials, Space Programming, 2002 - 2003
Advisor, Chemistry Division Laser Safety Committee, 2003 - present
Chemistry Division Maria Goeppert Mayer Committee, 2003 - present
Chemistry Division Assistant Scientist Promotion Committee,
     2004-present
Center for Nanoscale Materials, Proposal Evaluation Committee,
     2004-present
Chair, Center for Nanoscale Materials, Nanophotonics Search
     Committee, 2005-present

Personal Data

Born July 19, 1965 in Fullerton, California
Married (Kelly) with 3 children (Thomas, Rachel, Emily)

Publications

  1. Fabricating Three Dimensional Nanostructures using Two
    Photon Lithography in a Single Exposure Step, S. Jeon,
    V. Malyarchuk, J. A. Rogers, and G. P. Wiederrecht,
    Optics Express 14 (6), 2300-2308 (2006)
  2. Surface Plasmon Broadband Continuum, A. Bouhelier and
    G. P. Wiederrecht, Plasmonics: Metal Nanostructures and
    Their Optical Properties III     (SPIE Proc. Vol. 5927),
    M. Stockman, ed., SPIE, Bellingham, 2005, pp. 280-290
  3. Photonic Systems Formed by Proximity Field Nanopatterning,
    S. Jeon, G. P. Wiederrecht, and J. A. Rogers, Micromachining
    Technology for Micro-Optics and Nano-Optics III     (SPIE
    Proc. Vol. 5720), E. G. Johnson, G. P. Nordin, T. J. Suleski,
    eds., SPIE, Bellingham, 2005, pp. 187-195
  4. Surface Plasmon Characteristics of Tunable Photoluminescence
    in Single Gold Nanorods, A. Bouhelier, R. Bachelot, G. Lerondel,
    S. Kostcheev, P. Royer, and G. P. Wiederrecht, Phys. Rev. Lett.
    95, 267405 (2005)
  5. Photoresponsive Polymers for Topographic Simulation of the
    Optical Near-field of a Nanometer Sized Gold Tip in a
    Highly Focused Laser Beam, Y. Gilbert, R. Bachelot, A. Vial,
    G. Lerondel, P. Royer, A. Bouhelier, and G. P. Wiederrecht,
    Optics Express 13 (10), 3619-3624 (2005)
  6. Scattered Light Interference from a Single Metal Nanoparticle
    and Its Mirror Image, S-K. Eah, H. M. Jaeger, N. F. Scherer,
    G. P. Wiederrecht, and X-M. Lin, J. Phys. Chem. B Letters
    109 (24), 11858-11861 (2005)
  7. Excitation of Broadband Surface Plasmon Polaritons:
    Plasmonic Continuum Spectroscopy, A. Bouhelier and
    G. P. Wiederrecht, Phys. Rev. B 71 (19), 195406-1/195406-7
    (2005)
  8. Near-Field Photochemical Imaging of Nobel Metal
    Nanostructures, C. Hubert, A. Rumyantseva, G. Lerondel,
    J. Grand, S. Kostcheev, A. Vial, R. Bachelot, P. Royer,
    S.-H. Chang, S. K. Gray, G. P. Wiederrecht, and G. C. Schatz,
    Nano Letters 5, 615-619 (2005)
  9. Plasmon Scattering from a Single Gold Nanoparticle Collected
    Through an Optical Fiber, S.-K. Eah, H. M. Jaeger,
    N. F. Scherer, G. P. Wiederrecht, and X.-M. Lin,
    Appl. Phys. Lett. 86, 031902-1/031902-3 (2005)
  10. Surface Plasmon Rainbow Jets, A. Bouhelier and
    G. P. Wiederrecht, Optics Letters 30 (8), 884-886 (2005)
  11. Electromagnetic Interactions in Plasmonic Nanoparticle
    Arrays, A. Bouhelier, R. Bachelot, J. S. Im, G. Wiederrecht,
    G. Lerondel, S. Kostcheev, and P. Royer, J. Phys. Chem. B
    109 (8), 3195-3198 (2005)
  12. Coherent Coupling of Molecular Excitons to Electronic
    Polarizations of Noble Metal Nanoparticles,
    G. P. Wiederrecht, G. A. Wurtz, and J. Hranisavljevic,
    Nano Lett. 4, 2121-2125 (2004)
  13. Near-Field Imaging of Metal Nanoparticles (Invited
    Article), G. P. Wiederrecht, Eur. Phys. J. Appl. Phys.
    28, 3-18 (2004)
  14. Nanophotonics (Invited Book Review), G. P. Wiederrecht,
    Mat. Res. Bulletin 39, 2145-2146 (2004)
  15. J-Aggregates on Metal Nanoparticles Characterized
    through Ultrafast Spectroscopy and Near-Field Optics,
    G. P. Wiederrecht, G. A. Wurtz, J. S. Im, and
    J. Hranisavljevic, J. Scan. Microsc. 26, 2-9 (2004)
  16. Femtosecond Transient Absorption Dynamics of Close-Packed
    Gold Nanocrystal Monolayer Arrays, S.-K. Eah, H. M. Jaeger,
    N. F. Scherer, X.-M. Lin, and G. P. Wiederrecht, Chem. Phys.
    Lett. 386, 390-395 (2004)
  17. Modulation of the Exciton Lifetime of J-Aggregates on Metal
    Nanoparticles and Nanoparticle Arrays Explored through
    Ultrafast Spectroscopy and Near-Field Optical Microscopy,
    G. P. Wiederrecht, G. A. Wurtz, J. S. Im, and J. Hranisavljevic,
    SPIE Plasmonics: Metallic Nanostructures and Their Optical
    Properties     (SPIE Proc., Vol. 5221) N. J. Halas, Ed., SPIE,
    Bellingham, 2003, pp 1-13
  18. Submicron Ferroelectric Elements Fabricated by Direct Electron
    Beam Lithography, D.-J. Kim, J.-S. Im, C. Thompson,
    S. K. Streiffer, G. Wiederrecth, and O. Auciello, Proceedings of
    the Materials Research Society (Boston) 748, 43-48 (2003)
  19. Optical Scattering from Isolated Metal Nanoparticles and Arrays,
    G. A. Wurtz, J. S. Im, S. K. Gray, and G. P. Wiederrecht,
    J. Phys. Chem. B. 107 (51), 14191-14198 (2003) (Cover article)
  20. Electromagnetic Scattering Pathways for Metallic Nanoparticles:
    A Near-Field Optical Study, G. A. Wurtz, J. Hranisavljevic,
    and G. P. Wiederrecht, Nano Letters 3 (11), 1511-1516 (2003)
  21. Photo-initiated Energy Transfer in Nanostructured Complexes
    Observed by Near-Field Optical Microscopy, G. A. Wurtz,
    J. Hranisavljevic, and G. P. Wiederrecht, J. Microscopy
    210 (3), 340-343 (2003)
  22. Biology of TiO2-Oligonucleotide Nanocomposites,
    T. Paunesku, T. Rajh, G. Wiederrecht, J. Maser, S. Vogt,
    N. Stojicevic, M. Protic, B. Lai, J. Oryhon, M. Thurnauer, and
    G. Woloschak, Nature Materials 2, 343-346 (2003)
  23. Photoinduced Charge Separation Reactions of J-Aggregates
    Coated on Silver Nanoparticles, J. Hranisavljevic,
    N. M. Dimitrijevic, G. A. Wurtz, and G. P. Wiederrecht,
    J. Am. Chem. Soc. 124 (17), 4536-4537 (2002)
  24. The Spatial Extension of the Field Scattered by Silver
    Nanoparticles Excited near Resonance as Observed by
    Apertureless Near-Field Optical Microscopy, G. A. Wurtz,
    N. M. Dimitrijevic, and G. P. Wiederrecht, Jpn. J. Appl. Phys.
    41, L351-L354 (2002)
  25. High Time Resolution Q-Band EPR Study of Sequential
    Electron Transfer in a Triad Oriented in a Liquid Crystal,
    U. Heinen, T. Berthold, G. Kothe, E. Stavitski, T. Galili,
    H. Levanon, G. P. Wiederrecht, and M. R. Wasielewski,
    J. Phys. Chem. A 106, 1933-1937 (2002)
  26. Spectroscopic and Photochemical Properties of Open-Chain
    Carotenoids, H. A. Frank, J. S. Josue, J. A. Bautista,
    I. van der Hoef, F. J. Jansen, J. Lugtenburg, G. P. Wiederrecht,
    and R. L. Christensen, J. Phys. Chem. B. 106, 2083-2092 (2002)
  27. Intermolecular Dimerization within Pillared Layered Clay
    Templates, G. P. Wiederrecht, G. Sandi, K. A. Carrado,
    S. Seifert, Chem. Mater. 13, 4233-4238 (2001)
  28. Spin Polarization Mechanisms in Early Stages of Photoinduced
    Charge Separation in Surface-Modified TiO2 Nanoparticles,
    T. Rajh, O. Poluektov, A. A. Dubinski, G. Wiederrecht,
    M. C. Thurnauer, and A. D. Trifunac, Chem. Phys. Lett.
    344, 31-39 (2001)
  29. Dynamic Holography in Photorefractive Liquid Crystals
    (Invited chapter), G. P. Wiederrecht, Sensors and Optical
    Switching Phenomena (Molecular and Supramolecular
    Photochemistry), Eds., K. Schanze and V. Ramamurthy
    (Marcel Dekker, New York, 2001), pp. 319-362
  30. Photorefractive Liquid Crystals (Invited article),
    G. P. Wiederrecht, Annu. Rev. Mater. Res. 31, 139-169 (2001)
  31. Hydrogen-Bond-Mediated Photoinduced Electron-Transfer:
    Novel Dimethylaniline-Anthracene Ensembles Formed Via
    Watson-Crick Base-Pairing, J. L. Sessler, M. Sathiosatham,
    C. T. Brown, T. A. Rhodes and G. P. Wiederrecht, J. Am.
    Chem. Soc. 123, 3655-3660 (2001)
  32. Photorefractivity in Ferroelectric Liquid Crystal Composites
    Containing Electron Donor and Acceptor Molecules,
    G. P.Wiederrecht, B. A. Yoon and M. R. Wasielewski, Adv.
    Mater. 12, 1536-1539 (2000)
  33. Novel Mechanism for Triplet State Formation in Short Distance
    Covalently Linked Radical Ion Pairs, G. P. Wiederrecht,
    W. A. Svec, M. R. Wasielewski, T. Galili and H. Levanon,
    J. Am. Chem. Soc. 122, 9715-9722 (2000)
  34. Photorefractivity in Ferroelectric Liquid Crystals,
    G. P. Wiederrecht, M. R. Wasielewski and M. Fuller, "SPIE
    Organic Photorefractive Materials VI" (SPIE Proceedings,
    Volume 4104), K. Meerholz, Ed., SPIE, Bellingham, 2000,
    pp. 4104-4118
  35. Photorefractive Conjugated Polymer-Liquid Crystal Composites,
    M. R. Wasielewski, B. A. Yoon, M. Fuller, G. P. Wiederrecht,
    M. P. Niemczyk and W. A. Svec, "Thin Films for Optical
    Waveguide Devices and Materials for Optical Limiting",
    Proceedings of the Materials Research Society (Materials
    Research Society, Pittsburgh), 2000, p. 211
  36. Using Synthetic Model Systems to Understand Charge
    Separation and Spin Dynamics in Photosynthetic Reaction
    Centers, M. R. Wasielewski, G. P. Wiederrecht, W. A. Svec,
    M. P. Niemczyk, K. Hasharoni, T. Galili, A. Regev, and
    H. Levanon, Photosynthesis: Mechanisms and Effects, Ed.,
    G. Garab, Vol. V, Section 23 "Artificial Systems" (Kluwer
    Academic Publishers, Dordrecht, Netherlands, 1999),
    pp. 4193-4200
  37. Triplet States with Unusual Spin Polarization Resulting from
    Radical Ion Pair Recombination at Short Distances,
    G. P. Wiederrecht, W. A. Svec, M. R. Wasielewski, T. Galili,
    and H. Levanon, J. Am. Chem. Soc. 121, 7726 (1999)
  38. Photorefractivity in Liquid Crystals Doped with a Soluble
    ConjugatedPolymer, G. P. Wiederrecht, W. A. Svec,
    M. P. Niemczyk, and M. R. Wasielewski, SPIE Liquid Crystals
    III (SPIE Proceedings Volume 3800), ed. by I.C. Khoo
    (SPIE, Bellingham 1999), pp. 13-19
  39. Photorefractivity in Nematic Liquid Crystals Doped with a
    Conjugated Polymer: Mechanisms for Enhanced Charge
    Transport, G. P. Wiederrecht, M. P. Niemczyk, W. A. Svec,
    and M. R. Wasielewski, Chem. Mater. 11, 1409 (1999)
  40. Photorefractive Bragg Gratings in Nematic Liquid Crystals
    Aligned by a Magnetic Field, G. P. Wiederrecht and
    M. R. Wasielewski, Appl. Phys. Lett. 74, 3459 (1999)
  41. Photorefractivity in Crosslinked Polymer-Stabilized Nematic
    Liquid Crystals, G. P. Wiederrecht and M. R. Wasielewski,
    J. Nonl. Opt. Phys. and Mat. 8, 107 (1999)
  42. Controlling the Adiabaticity of Electron Transfer Reactions using
    Nematic Liquid Crystal Solvents, G. P. Wiederrecht, W. A. Svec,
    and M. R. Wasielewski, J. Phys. Chem. 103, 1386 (1999)
  43. Photorefractivity in Polymer-Stabilized Nematic Liquid Crystals
    (Invited Article), G. P. Wiederrecht and M. R. Wasielewski,
    SPIE Organic Photorefractive Materials III (SPIE Proceedings
    Volume 3471), ed. by S. Ducharme, J. W. Stasiak (SPIE,
    Bellingham 1998), pp. 102-109
  44. Charge Transfer Reactions in Nematic Liquid Crystals,
    G. P. Wiederrecht, M. R. Wasielewski, T. Galili, and
    H. Levanon, SPIE Liquid Crystals II (SPIE Proceedings V. 3475),
    Ed., I.C. Khoo (SPIE, Bellingham 1998), pp. 102-111
  45. Photorefractivity in Polymer-Stabilized Liquid Crystal Films,
    M. R. Wasielewski and G. P. Wiederrecht, Polym. Prepr.
    39, 981(1998)
  46. Determination of the Energy Levels of Radical Pair States
    in Photosynthetic Models Oriented in Liquid Crystals using
    Time-Resolved Electron Paramagnetic Resonance,
    H. Levanon, T. Galili, A. Regev, G. P. Wiederrecht,
    W. A. Svec, and M. R. Wasielewski, J. Am. Chem. Soc.
    120, 6366 (1998)
  47. Photorefractivity in Polymer Stabilized Nematic Liquid
    Crystals G. P. Wiederrecht, and M. R. Wasielewski, J. Am.
    Chem. Soc. 120, 3231 (1998)
  48. Photorefractivity in Liquid Crystalline Composite Materials,
    G. P. Wiederrecht and M. R. Wasielewski, SPIE Organic
    Photorefractive Materials II (SPIE Proceedings Volume
    3144), Eds., S. Ducharme, J. W. Stasiak (SPIE, Bellingham
    1997), pp. 227-35
  49. Differential Control of Intramolecular Charge Separation and
    Recombination Rates using Nematic Liquid Crystal Solvents,
    G. P. Wiederrecht, W. A. Svec, and M. R. Wasielewski,
    J. Am. Chem. Soc. 119, 6199 (1997)
  50. Photorefractive Liquid Crystals Doped with Electron Donor
    and Acceptor Molecules, G. P. Wiederrecht, B. A. Yoon, and
    M. R. Wasielewski, Synth. Met. 84, 901 (1997)
  51. Photorefractivity in Nematic Liquid Crystals Containing
    Electron Donor-Acceptor Molecules that Undergo Intramolecular
    Charge Separation, G. P. Wiederrecht, B. A. Yoon, W. A. Svec,
    and M. R. Wasielewski, J. Am. Chem. Soc. 119, 3358 (1997)
  52. Photorefractive Liquid Crystals (Invited Article),
    G. P. Wiederrecht, B. A. Yoon, and M. R. Wasielewski,
    Adv. Mat. 8, 535 (1996)
  53. Ultrafast Photoinduced Electron Transfer in a Chlorophyll-
    Based Triad: Vibrationally Hot Ion Pair Intermediates and
    Dynamic Solvent Effects, G. P. Wiederrecht, M. P. Niemczyk,
    W. A. Svec, and M. R. Wasielewski, J. Am. Chem. Soc. 118,
    81 (1996)
  54. High Photorefractive Gain in Nematic Liquid Crystals Doped
    with Electron Donor and Electron Acceptor Molecules,
    G. P. Wiederrecht, B. A. Yoon, and M. R. Wasielewski,
    Science 270, 1794 (1995)
  55. Femtosecond Transient Grating Studies of Chlorophylls and
    a Chlorophyll-Based Electron Donor-Acceptor Molecule,
    G. P. Wiederrecht, W. A. Svec, M. P. Niemczyk, and
    M. R. Wasielewski, J. Phys. Chem. 99, 8918 (1995)
  56. Femtosecond Transient Absorption Spectroscopy on the
    Light-Harvesting Chl a/b Protein Complex of Photosystem II at
    Room Temperature and 12K, T. Bittner, G. P. Wiederrecht,
    K.-D. Irrgang, G. Renger, and M. R. Wasielewski, Chem.
    Phys. 194, 311 (1995)
  57. Explanation of Anomalous Polariton Dynamics in LiTaO3,
    G. P. Wiederrecht, T. P. Dougherty, and K. A. Nelson,
    Phys. Rev. B 51, 916 (1995)
  58. Chlorin-Based Supramolecular Assemblies for Artificial
    Photosynthesis, M. R. Wasielewski, G. P. Wiederrecht,
    W. A. Svec, and M. P. Niemczyk, Solar Energy Materials
    and Solar Cells 38, 127 (1995)
  59. Femtosecond Transient Grating Studies of Electron Transfer
    in Porphyrin and Chlorophyll Donor-Acceptor Molecules,
    G. P. Wiederrecht, W. A. Svec, and M. R. Wasielewski,
    Ultrafast Phenomena IX, ed. by P. F. Barbara, W. H. Knox,
    G. A. Mourou, and A. H. Zewail (Springer-Verlag, Berlin
    1994), p. 452
  60. Femtosecond Photodichroism Studies of Isolated Photosystem
    II Reaction Centers, G. P. Wiederrecht, M. Seibert, Govindjee,
    M. R. Wasielewski, Proc. Natl. Acad. Sci. 91, 8999 (1994)
  61. Femtosecond Time-Resolved Spectroscopy of Soft Modes in
    Structural Phase Transitions of Perovskites, T. P. Dougherty,
    G. P. Wiederrecht, K. A. Nelson, M. H. Garrett, H. P. Jenssen,
    and C. Warde, Phys. Rev. B 50, 8996 (1994)
  62. Effect of Donor-Acceptor Orientation on Ultrafast Photoinduced
    Electron Transfer and Dark Charge Recombination in
    Porphyrin-Quinone Molecules, Y. Sakata, H. Tsue, M. P. O'Neil,
    G. P. Wiederrecht, and M. R. Wasielewski, J. Am. Chem. Soc.
    116, 6904 (1994)
  63. Biomimetic Modelling of Photosynthetic Reaction Centers:
    Photoinduced Spin-Polarized Radical Ion Pair Formation in a
    Chlorophyll-Porphyrin-Quinone Triad, M. R. Wasielewski,
    G. L. Gaines, III, G. P. Wiederrecht, W. A. Svec, and
    M. P. Niemczyk, J. Am. Chem. Soc. 115, 10442 (1993)
  64. Ultrafast Solvation Dynamics of Chlorophyll-Porphyrin-Acceptor
    Triads, G. P. Wiederrecht, S. Watanabe, and
    M. R. Wasielewski, Chem. Phys. 176, 601 (1993)
  65. Photochemical Electron Transfer in Chlorphyll-Porphyrin-
    Quinone Traids: The Role of the Porphyrin-Bridging Molecule,
    D. G. Johnson, M. P. Niemzcyk, D. W. Minsek,
    G. P. Wiederrecht, W. A. Svec, G. L. Gaines, III, and
    M. R. Wasielewski, J. Am. Chem. Soc. 115, 5692 (1993)
  66. Femtosecond Impulsive Stimulated Raman Scattering Studies
    of LiTaO3, G. P. Wiederrecht, T. P. Dougherty, L. Dhar,
    K. A. Nelson, A. M. Weiner, and D. E. Leaird, Ferroelectrics
    144, 1 (1993)
  67. Anomalous Polariton Dynamics in LiTaO3, G. P. Wiederrecht,
    T. P. Dougherty, L. Dhar, K. A. Nelson, A. M. Weiner, and
    D. E. Leaird, Ferroelectrics 150, 103 (1993)
  68. Multiple Excitation Pulse, Multiple Probe Pulse Femtosecond
    Spectroscopy, G. P. Wiederrecht, W. Wang, K. A. Nelson,
    A. M. Weiner, and D. E. Leaird, Ultrafast Phenomena VIII,
    Eds., J.-L. Martin, A. Migus, G. A. Mourou, and A. H. Zewail
    (Springer-Verlag, Berlin 1993), p. 110
  69. Ultrafast Soft Mode Dynamics in Ferroelectric Crystals,
    G. P. Wiederrecht, T. P. Dougherty, and K. A. Nelson, Ultrafast
    Phenomena VIII, ed. by J.-L. Martin, A. Migus, G. A. Mourou,
    and A. H. Zewail (Springer-Verlag, Berlin 1993), p. 365
  70. Femtosecond Spectroscopy of Ferroelectric Perovskites:
    Explanation of Anomalous Polariton Dynamics in Lithium
    Tantalate, G. P. Wiederrecht, T. P. Dougherty, L. Dhar, and
    K. A. Nelson, Solid State Ionics III (Proceedings of the Materials
    Research Society), ed. by G.-A. Nazri, J.-M. Tarascon, and
    M. Armand (MRS, Pittsburgh 1993), p. 431
  71. Polarization Dynamics in Ferroelectric Perovskite Crystals,
    T. P. Dougherty, G. P. Wiederrecht, L. Dhar, and K. A. Nelson,
    Ultrafast Pulse Generation and Spectroscopy (SPIE Proc. v.
    1861), Eds., T. R. Gosnell, A. T. Taylor, K. A. Nelson, and
    M. C. Downer (SPIE, Bellingham 1993), p. 251
  72. Femtosecond Time-Resolved Observation of Soft-Mode
    Dynamics in Structural Phase Transitions, T. P. Dougherty,
    G. P. Wiederrecht, K. A. Nelson, M. H. Garrett, H. P. Jenssen,
    and C. Warde, Science 258, 770 (1992)
  73. Impulsive Stimulated Scattering Study of the Coupled Acoustic
    and Soft Modes in KD2PO4, T. P. Dougherty, M. R. Farrar,
    L.-T. Cheng, Y.-X. Yan, G. P. Wiederrecht, and K. A. Nelson,
    Ferroelectrics 135, 197 (1992)
  74. Impulsive Stimulated Raman Scattering Experiments in the
    Polariton Regime, T. P. Dougherty, G. P. Wiederrecht, and
    K. A. Nelson, J. Opt. Soc. Am. B 9, 2179 (1992)
  75. Femtosecond Pulse Shaping and Excitation of Molecular
    Coherences, A. M. Weiner, D. E. Leaird, G. P. Wiederrecht,
    and K. A. Nelson, Proceedings of the NATO Workshop on
    Coherence Phenomena in Atoms and Molecules in Laser Fields,
    Eds., A. D. Bandrauk and S. C. Wallace (Plenum-Press
    1992), p. 277
  76. Ultrafast Molecular Processes (Invited Article),
    G. P. Wiederrecht, 1992 McGraw-Hill Yearbook of Science
    and Technology, ed. by S. P. Parker (McGraw- Hill, New York
    1992), p. 485
  77. Time-Resolved Spectroscopy of Polarization Dynamics in
    KNbO3, T. P. Dougherty, G. P. Wiederrecht, and K. A. Nelson,
    Ferroelectrics 120, 79 (1992)
  78. Femtosecond Optical Control Over Molecular Motion,
    A. M. Weiner, D. E. Leaird, G. P. Wiederrecht, and
    K. A. Nelson, Physics News in 1990, edited by P. F. Schewe
    (American Institute of Physics, Colchester 1990), p. 25
  79. Femtosecond Multiple-Pulse Impulsive Stimulated Raman
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    and K. A. Nelson, Optics News 15, 29 (1989)

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