Narrowband tunable diode lasers are used to carry out high-resolution spectroscopy of atomic rubidium. The technique of saturated absorption spectroscopy will be studied to obtain resolution greater than the Doppler width of the resonance lines. The excited state hyperfine structure will be measured. You may also want to look at this older version of the lab from a time when the diode laser sources were home-made. You can use the manual for the Vortex 6000 Laser Controller. Also here is a useful cheat sheet on the Rubidium spectrum.
Please read through the lab guide, provide a short paragraph about the main goals of the experiment, and then complete the indicated prelab questions from the lab guide:
Exercises 1-5 on page 17