Abstract
A thallium hollow cathode lamp, which provides high density atomic vapor using sputtering process, is a compact atomic source for spectroscopy study. The interaction between this lamp and incoming light on resonance frequency has been well studied. In this thesis, both optogalvanic spectra and saturation absorption spectra in 377 nm transition of thallium are studied and in comparison with laser induced fluorescence. Moreover, a dispersive- like signal is obtained as a differential signal between two saturation absorption lamb-dips results from by two pump beams with a frequency difference derived from an acousto-optic modulator. One of the beams is frequency shifted by the modulator. This method combines the approach of difference of two frequency shifted lamb-dips and modulation transfer technique. The dispersive- like signal is used for laser frequency stabilization is used for the future laser cooling experiment.