John Gillaspy, Precision Laser Spectroscopy (1988-present)

For more information about my work on laser spectroscopy, consult the following papers:

1. Sansonetti, C.J., Gillaspy, J.D., and Cromer, C.L., "Precise Experimental Test of Calculated Two-Electron Lamb Shifts in Helium," Phys. Rev. Lett. 65, 2539 (1990).
2. Gillaspy, J.D. and Sansonetti, C.J., "Absolute wavelength determinations in molecular tellurium: new reference lines for precision laser spectroscopy," J. Opt. Soc. Am. 8, 241 (1991); also 9, 1401 (1992).
3. Sansonetti, C.J. and Gillaspy, J.D., "Absolute ionization energy of the 2 1S level of helium," Phys. Rev. A R1, 45 (1992).
4. Gillaspy, J.D. and Martin, W.C., "Comment on Measurement of the Lamb shifts in singlet levels of atomic helium," Phys. Rev. A 45, 5315 (1992).
5. Scholl, T.J., Cameron, R., Rosner, S.D., Zhang, L., Holt, R.A., Sansonetti, C.J., and Gillaspy, J.D., "Precision Measurement of Relativistic and QED Effects in Heliumlike Beryllium," Phys. Rev. Lett. 71, 2188 (1993).
6. Sterr, A. Bard, C.J. Sansonetti, S.L. Rolston, and J.D. Gillaspy, "Determination of the xenon 6s[3/2]2-6s'[1/2]o clock frequency by interferometric wavelength measurements," Opt. Lett. 20, 1421 (1995).
7. Simien, Clayton E., Brewer, Samuel M., Tan, Joseph N., Gillaspy, John D., Sansonetti, Craig J, "Progress at NIST in measuring the D-lines of Li isotopes using an optical frequency synthesizer," Can. J. Phys. 89, 59 (2011)
8. Sansonetti, C.J., Simien, C. E., Gillaspy, J. D., Tan, J.N., Brewer, S.M., Brown, R.C., Wu, S., and Porto, J. V., "Absolute Transition Frequencies and Quantum Interference in a Frequency Comb Based Measurement of the ^6,7Li D Lines," Phys. Rev. Lett. 107, 023001 (2011)
9. Brown, R. C., Wu, S., Porto, J. V., Sansonetti, C. J., Simien, C. E., Brewer, S. M., Tan, J. N., and Gillaspy, J. D., "Quantum interference and light polarization effects in unresolvable atomic lines:  Application to a precise measurement of the ^6,7Li D2 lines," Phys. Rev. A 87, 032504 (2013)