Doppler-free three-photon spectroscopy on narrow-line optical transitions

التفاصيل البيبلوغرافية
العنوان: Doppler-free three-photon spectroscopy on narrow-line optical transitions
المؤلفون: Panelli, Guglielmo, Burd, Shaun C., Porter, Erik J., Kasevich, Mark
سنة النشر: 2024
المجموعة: Physics (Other)
Quantum Physics
مصطلحات موضوعية: Physics - Atomic Physics, Physics - Optics, Quantum Physics
الوصف: We demonstrate coherent Doppler-free three-photon excitation of the $^{1}S_{0}$$\leftrightarrow$$^{3}P_{0}$ optical clock transition and the $^{1}S_{0}$$\leftrightarrow$$^{3}P_{1}$ intercombination transition in free-space thermal clouds of $^{88}$Sr atoms. By appropriate orientation of the wavevectors of three lasers incident on the atoms, the first-order Doppler shift can be eliminated for all velocity classes. Three-photon excitation of the $^{1}S_{0}$$\leftrightarrow$$^{3}P_{1}$ transition enables high-contrast Ramsey spectroscopy with interrogation times comparable to the 21$\mu$s natural lifetime using a single near-resonant laser source. Three-photon spectroscopy on the $^{1}S_{0}$$\leftrightarrow$$^{3}P_{0}$ clock transition, using only laser frequencies nearly resonant with the $^{1}S_{0}$$\leftrightarrow$$^{3}P_{0}$ and $^{1}S_{0}$$\leftrightarrow$$^{3}P_{1}$ transitions, enables a reduction in Doppler broadening by two orders of magnitude and a corresponding $\sim470$Hz linewidth without a confining potential.
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2403.09814
رقم الانضمام: edsarx.2403.09814
قاعدة البيانات: arXiv