We have constructed two highly stable and reproducible 87Rb D2-saturated-absorption spectrometers at 780 nm, using dither/third-harmonic lock-in detection and radio-frequency sideband techniques, respectively. We achieved ±3-kHz reproducibility and agreement between these two independent systems. Heterodyne measurements of the hyperfine splittings of the 5P3/2 state give its magnetic dipole (A) and electric quadrupole (B) hyperfine constants with a 10-fold reduction in uncertainty.
© 1996 Optical Society of America
Jun Ye, Steve Swartz, Peter Jungner, and John L. Hall, "Hyperfine structure and absolute frequency of the 87Rb 5P3/2 state," Opt. Lett. 21, 1280-1282 (1996)