Xu, C., and W. Denk.
Comparison of One- and Two-Photon Optical Beam-Induced Current Imaging” Journal of Applied Physics 86(4), 2226-2231 (1999)  >>> Link

Xu, C.
Two-Photon Cross Sections of Indicators” In Imaging Living Cells, edited by R. Yuste, F. Lanni and A. Konnerth. Chap. 19, pp. New York: Cold Spring Harbor Laboratory Press (1999)

Kawata, Y., C. Xu, and W. Denk.
Feasibility of Molecular-Resolution Fluorescence near-Field Microscopy Using Multi-Photon Absorption and Field Enhancement near a Sharp Tip” Journal of Applied Physics 85(3), 1294-1301 (1999)  >>> Link


Albota, M. A., C. Xu, and W. W. Webb.
Two-Photon Fluorescence Excitation Cross Sections of Biomolecular Probes from 690 to 960 nm“, Applied Optics 37(31), 7352-7356 (1998)  >>> Link

Albota, M., D. Beljonne, J. L. Bredas, J. E. Ehrlich, J. Y. Fu, A. A. Heikal, S. E. Hess, T. Kogej, M. D. Levin, S. R. Marder, D. McCord-Maughon, J. W. Perry, H. Rockel, M. Rumi, C. Subramaniam, W. W. Webb, X. L. Wu, and C. Xu.
Design of Organic Molecules with Large Two-Photon Absorption Cross Sections” Science 281(5383), 1653-1656 (1998)  >>> Link


Xu, C., and W.W. Webb.
Multiphoton Excitation of Molecular Fluorophores and Nonlinear Laser Microscopy” In Topics in Fluorescence Spectroscopy, Volume 5, edited by J.R. Lakowicz. Chap. 11, pp. 471-540. New York: Plenum Press (1997)

Xu, C., J. B. Shear, and W. W. Webb.
Hyper-Rayleigh and Hyper-Raman Scattering Background of Liquid Water in Two-Photon Excited Fluorescence Detection” Analytical Chemistry 69(7), 1285-1287 (1997)  >>> Link

Xu, C., and W. Denk.
Two-Photon Optical Beam Induced Current Imaging through the Backside of Integrated Circuits” Applied Physics Letters 71(18), 2578-2580 (1997)  >>> Link

Shear, J. B., C. Xu, and W. W. Webb.
Multiphoton-Excited Visible Emission by Serotonin Solutions“, Photochemistry and Photobiology 65(6), 931-936 (1997)  >>> Link

Guild, J. B., C. Xu, and W. W. Webb.
Measurement of Group Delay Dispersion of High Numerical Aperture Objective Lenses Using Two-Photon Excited Fluorescence” Applied Optics 36(1), 397-401 (1997) >>> Link


C XuW ZipfelJ B ShearR M Williams, and W W Webb
“Multiphoton fluorescence excitation: new spectral windows for biological nonlinear microscopy”, PNAS,. >>>   Link

Xu, C., R.M. Williams, W. Zipfel, and W.W. Webb.
Multiphoton Excitation Cross-Sections of Molecular Fluorophores“, Bioimaging 4(3), 198-207 (1996) >>> Link

Xu, C., and W. W. Webb.
Measurement of Two-Photon Excitation Cross Sections of Molecular Fluorophores with Data from 690 to 1050 Nm“, Journal of the Optical Society of America B-Optical Physics 13(3), 481-491 (1996) >>> Link


Xu, C., J. Guild, W. W. Webb, and W. Denk.
Determination of Absolute 2-Photon Excitation Cross-Sections by in-Situ 2nd-Order Autocorrelation“, Optics Letters 20(23), 2372-2374 (1995) >>> Link

Mertz, J., C. Xu, and W. W. Webb.
Single-Molecule Detection by Two-Photon-Excited Fluorescence“, Optics Letters 20(24), 2532-2534 (1995) >>> Link