Enhancement of Undergraduate Physics Laboratory with Laser Spectroscopy and Superconductivity Experiments

提出了一种改进物理专业现代物理高级实验课程的方法。具体目标是提供与原子物理和凝聚态物质领域的当前研究和应用密切相关的新实验，以响应对应用和工程物理感兴趣的学生的预计增长。该项目向实验室引入了两个新实验：一个是使用固态二极管激光器对原子束中的原子进行光泵浦和光谱分析，另一个是测量高Tc超导体的实验。激光光谱学与斯特恩-格拉赫实验相结合，产生了丰富多样的原子物理效应，这些效应对本科生来说是可以理解的。除了斯特恩-格拉赫效应，实验还允许演示：无多普勒光谱学、超精细结构、光泵浦、射频共振和塞曼效应。对高温超导体的实验包括对持续电流的测量。

An enhancement of an advanced laboratory course in modern physics for physics majors is proposed. The specific goal is to offer new experiments closely related to present-day research and applications in the areas of atomic physics and condensed matter, in response to a projected increase of students with interests in applied and engineering physics. The project introduces to the laboratory two new experiments: one using a solid state diode laser to do optical pumping and spectroscopy of atoms in an atomic beam and a second experiment involving measurements on a high Tc superconductor. The laser spectroscopy is combined with a Stern-Gerlach experiment to yield a rich variety of atomic physics effects which would be accessible to the undergraduate student. In addition to the Stern-Gerlach effect, the experiment allows demonstrations of: Doppler-free optical spectroscopy, hyperfine structure, optical pumping, radio frequency resonance, and Zeeman effect. The experiment on a high Tc superconductor involves measurements of the persistent current.