2010/02/01 by A. V. Taichenachev, V. I. Yudin, C. W. Oates +6
Physics and Astronomy · #Advanced Frequency and Time Standards #Quantum optics and atomic interactions #Advanced Fiber Laser Technologies
paper · doi:10.1134/s0021364009230052
We have extended Ramsey spectroscopy by stepping the probe frequency during the two Ramsey excitation pulses to compensate frequency shifts induced by the excitation itself. This makes precision Ramsey spectroscopy applicable even for transitions that have Stark and Zeeman shifts comparable to the spectroscopic resolution. The method enables a new way to evaluate and compensate key frequency shifts, which benefits in particular, optical clocks based on magnetic field-induced, spectroscopy, two-photon transitions, or heavily forbidden transitions.