Doppler-free
Rb saturation spectroscopy with an external cavity diode laser
Supervisor: Dr.
Christian Chmelik
In this experiment, an
external cavity diode laser is used to perform laser
spectroscopy of rubidium atoms. With the experimental set-up
available, the Doppler broadened optical absorption lines
(linear spectroscopy) are measured first. Thereafter, one
applies the technique of saturated absorption spectroscopy to
study the lines with resolution beyond the Doppler limit
(nonlinear spectroscopy). This enables to measure the
hyperfine splittings of one of the excited states of rubidium.
A Fabry-Perot interferometer will be used to calibrate the
frequency scale for the measurements.
• Operation of External Cavity
Diode Laser
• Operation of
Fabry-Perot-Interferometer
• Difference between linear
and non-linear spectroscopy
• Measurement and analysis of
the Doppler-broadened
780 nm rubidium spectral line
• Measurement and analysis of
the Doppler-free adsorption line
• Verifying the energy levels
• Calculation of the Doppler
broadening
• Calculation of the hyperfine
coupling constants
description
of
this experiment