Polarization spectroscopy of a closed atomic transition: applications to laser frequency locking
Polarization spectroscopy of a closed atomic transition: applications to laser frequency locking
复制标题
DOI：
10.1088/0953-4075/35/24/315
复制
发表时间：
2002-12
期刊：
影响因子：
--
通讯作者：
C. Pearman;C. Adams;S. Cox;P. Griffin;D. Smith;I. Hughes
中科院分区：
文献类型：
--
作者：
C. Pearman;C. Adams;S. Cox;P. Griffin;D. Smith;I. Hughes
我们研究了Rb蒸气的偏振光谱。用弱探测光束分析了强反传播圆偏振泵浦光束在室温蒸汽中引起的双折射现象。与大多数其他偏振光谱学工作不同，我们使用偏振光束分裂立方体和两个探测器（而不是一个偏振器和一个探测器）来分析探测光束。信号的形式是洛伦兹量的导数。在理论分析方面，我们研究了85Rb的D2线5 2S1/2 （F = 3）→5 2P3/2 （F' = 4）的闭合原子跃迁。我们研究了在mF状态中重新分配总体所需的时间，推导了期望线形状的表达式，并给出了与理论非常吻合的实验数据。偏振谱为激光稳频提供了理想的误差信号。我们描述了优化误差信号的几何结构和参数。
We study polarization spectroscopy of Rb vapour. A weak probe beam analyses the birefringence induced in a room temperature vapour by a strong counterpropagating circularly polarized pump beam. In contrast to most other work on polarization spectroscopy, we use a polarization beam splitting cube and two detectors (rather than a polarizer and one detector) to analyse the probe beam. The signal is in the form of a derivative of a Lorentzian. For theoretical analysis we study the closed atomic transition 5 2S1/2 (F = 3) → 5 2P3/2 (F' = 4) in the D2 line of 85Rb. We study the time needed to redistribute population among the mF states, derive an expression for the expected lineshape and present experimental data in excellent agreement with theory. The polarization spectrum provides an ideal error signal for frequency stabilization of a laser. We describe the geometry and parameters for optimizing the error signal.