Schafer, J., Mickadeit, F., Tong, W. G., "Sensitive Nonlinear Wave-Mixing Detection Method for Plasma Spectrochemical Analysis", 1997 Pacific Conference on Chemistry and Spectroscopy, American Chemical Society & Society for Applied Spectroscopy, Hyatt Regency, Irvine, CA, October 21-25, 1997.

Mickadeit, F., Kemp, H., Schafer, J., and Tong, W. G., "Sensitive Sub-Doppler Nonlinear Spectroscopy for Hyperfine Structure Analysis", SPIE Symposium on High-Power Lasers and Applications, Methods for Ultrasensitive Detection, San Jose, CA, January 24-30, 1998 (Invited paper).

Schafer, J., Mickadeit, F., Tong, W. G., Multiphoton Spectroscopy Using an Inductively Coupled Plasma Atomizer", 1998 Pacific Conference on Chemistry and Spectroscopy, American Chemical Society & Society for Applied Spectroscopy, San Francisco, CA, October, 1998.

Lopez, M. M., Schafer, J., Knittle, J., Tong, W. G., "Thermal and Solvent Effects on Nonlinear Absorption Spectrometric Measurement of Liquid Analytes", 1999 Pacific Conference on Chemistry and Spectroscopy, American Chemical Society & Society for Applied Spectroscopy, Ontario, CA, October 6-8, 1999.

Schafer, J., Mickadeit, F., Tong, W. G., "Multi-Photon Absorption Spectroscopy Using Plasma Atomizers", 1999 Pacific Conference on Chemistry and Spectroscopy, American Chemical Society & Society for Applied Spectroscopy, Ontario, CA, October 6-8, 1999.

Schafer, J., Tong, W., Knittle, J., Lopez, M., "Important Thermal and Optical Properties in Sensitive-Absorbance Measurement by Laser-Wave Mixing in Capillary Flow Cells", 219th American Chemical Society National Meeting, San Francisco, CA, March 26, 2000.

Schafer, J., Tong, W., Mickadeit, F., Kemp, H., Briggs, R., "High-Resolution Sub-Doppler, Multiphoton, Wave-Mixing Spectroscopy for Isotope Analysis", 219th American Chemical Society National Meeting, San Francisco, CA, March 26, 2000.

Schafer, J., Tong, W., "Laser Spectroscopy at High Temperature", Centro de Graduados, Instituto Tecnologico, Tijuana, Mexico, March, 2000.

Lopez, M., Schafer, J., Tong, W., "Sensitive Detection of Analytes using Laser Wave Mixing", 220th American Chemical Society National Meeting, Washington, D.C., August 21, 2000.

Kemp, H., Schafer, J., Mickadeit, F., Briggs, R., Tong, W., "Sensitive High Resolution Laser-Based Methods for Biomedical Applications", 36th American Chemical Society Western Regional Conference, San Francisco, CA, October 25, 2000.

Atherton, A., Schafer, J., Lopez, M., Tong, W., "Laser Wave-Mixing Spectroscopy for Monitoring Small Changes of Analyte Properties in Liquid Cells", 36th American Chemical Society Western Regional Conference, San Francisco, CA, October 25, 2000.

Kemp, H., Schafer, J., Tong, W., "Laser-Based Sensitive And Selective Gas-Phase Chemical Analysis in High Temperature Atomizer", III International Symposium on Chemical Research in the Border Region, Tijuana, Mexico, November 16, 2000.

Lopez, M., Schafer, J., Tong, W., "Comparison of Nonlinear Laser Wave-Mixing Spectroscopy With Laser-Based Fluorescence Methods for Biomolecules", III International Symposium on Chemical Research in the Border Region, Tijuana, Mexico, November 16, 2000.

Atherton, A., Schafer, J., Tong, W., "Laser-Induced Grating Spectroscopy for Sensitive Solid-Phase Optical Sensors", 125th American Chemical Society National Meeting, San Diego, CA, April 1-5, 2001.

Kemp, H., Briggs, R., Schafer, J., Tong, W., "Sensitive Sub-Doppler Nonlinear Spectroscopic Method for Simplified Isotope-Ratio Measurement", 125th American Chemical Society National Meeting, San Diego, CA, April 1-5, 2001.

Lopez, M., Schafer, J., Tong, W., "Advantages of Nonlinear Laser-Induced Grating Spectroscopic Method Over Fluorescence Methods for Trace-Concentration Analysis", 125th American Chemical Society National Meeting, San Diego, CA, April 1-5, 2001.

Schafer, J., Briggs, R., Tong, W., "Sensitive Detection of Stable Isotopes in Geochemistry Using Multi-Photon Laser Wave-Mixing Spectroscopy", 125th American Chemical Society National Meeting, San Diego, CA, April 1-5, 2001.

Lopez, M., Schafer, J., Tong, W., “Sensitive Detection of Biomolecules By Laser Wave Mixing”, 2001 SACNAS National Conference, Phoenix, AZ, September 27-30, 2001.

Atherton, A., Schafer, J., Tong, W. G., “Solid-Phase Detection of Biomolecules By Wave-Mixing Laser-Induced Grating Spectroscopy”, 37th American Chemical Society Western Regional Conference, Santa Barbara, CA, October 30, 2001.

Kemp, H., Schafer, J., Briggs, R., Lyons, W., Tong, W., “Multi-Photon Nonlinear Spectroscopy as a Sensitive Optical Probe for Gas-Phase Population Mapping”, Euro-Mediterranean Symposium on Laser Induced Breakdown Spectroscopy, Cairo, Egypt, November 2, 2001.

Knittle, J., Lopez, M., Schafer, J., Atherton, A., Zhang, T., Tong, W., “Sensitive Nonlinear Spectroscopy for Bioanalytical and Environmental Applications”, Euro-Mediterranean Symposium on Laser Induced Breakdown Spectroscopy, Cairo, Egypt, November 2, 2001.

Schafer, J., Lopez, M., Knittle, J., Atherton, A., Tong, W., “Sensitive Absorbance Measurement for Condensed-Phase Analytes Using Nonlinear Laser Wave Mixing”, Euro-Mediterranean Symposium on Laser Induced Breakdown Spectroscopy, Cairo, Egypt, November 2, 2001.

Atherton, A., Schafer, J., Lopez, M., Tong, W. G., “Laser-Induced Grating Spectroscopy for Biosensor Application”, American Chemical Society National Meeting, Boston, MA, August 18-22, 2002.

Lopez, M., Atherton, A., Schafer, J., Tong, W. G., “Sensitive Absorption-Based Nonlinear Laser Spectroscopy for Bioanalytical Applications”, American Chemical Society National Meeting, Boston, MA, August 18-22, 2002.

Atherton, A., Lopez, M., Schafer, J., Tong, W. G., “Microarray Studies by Degenerate Four Wave-Mixing Spectroscopy” 8th Annual Maria Goeppert-Mayer Interdisciplinary Symposium, San Diego, CA, March 1, 2003.

Briggs, R. D., Lyons, W., Schafer, J., Tong, W. G., “High-Resolution Hyperfine Structure Measurements by Diode Laser-Based Wave Mixing,” 226th American Chemical Society National Meeting, New York, NY, Sept 7-11, 2003.

Schafer, J., Briggs, R. D., Lyons, W., Tong, W. G., “Laser Wave-Mixing Spectroscopy as a Tool for Mapping High-Temperature Plasma Atomizers,” 226th American Chemical Society National Meeting, New York, NY, Sept 7-11, 2003.

Lyons, W., Briggs, R. D., Shafer, J., Tong, W. G., “Nonlinear Laser Spectroscopy for Sensitive High-Resolution Detection of Environmental Isotopes,” 226th American Chemical Society National Meeting, New York, NY, Sept 7-11, 2003.