Takamoto Masao, Katori Hidetoshi
Engineering Research Institute, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan.
Phys Rev Lett. 2003 Nov 28;91(22):223001. doi: 10.1103/PhysRevLett.91.223001. Epub 2003 Nov 25.
We report on the spectroscopy of the 5s(2) 1S0(F=9/2)-->5s5p 3P0(F=9/2) clock transition of 87Sr atoms (natural linewidth of 1 mHz) trapped in a one-dimensional optical lattice. Recoilless transitions with a linewidth of 0.7 kHz as well as the vibrational structure of the lattice potential were observed. By investigating the wavelength dependence of the carrier linewidth, we determined the magic wavelength, where the light shift in the clock transition vanishes, to be 813.5+/-0.9 nm.
我们报告了在一维光学晶格中俘获的87Sr原子（自然线宽为1 mHz）的5s(2) 1S0(F = 9/2)-->5s5p 3P0(F = 9/2) 时钟跃迁的光谱。观察到了线宽为0.7 kHz的无反冲跃迁以及晶格势的振动结构。通过研究载流线宽的波长依赖性，我们确定了时钟跃迁中的光频移消失的魔术波长为813.5±0.9 nm。
