Lecture recordings from Physics 268 at San Jose State University. 75 minute enhanced audio epsiodes will be added on Monday and Wednesday nights throughout Fall of 2009.
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Lecture recordings from Physics 268 at San Jose State University. 75 minute enhanced audio epsiodes will be added on Monday and Wednesday nights throughout Fall of 2009.
We look at how saturation causes hole burning in a spectral line, and measurement techniques such as lamb-dip spectroscopy and intermodulated fluorescence that can take advantage of this for doppler-free measurements.
We look at basic methods of emission spectroscopy including laser induced fluorescence, resonant enhanced multi-photon emission (REMPI), intermodulated fluorescence and stimulated emission pumping.
WE look at basic techniques of absorption spectroscopy including direct detection, frequency modulation, intracavity absorption and cavity ringdown spectroscopy.
We look at how the natural lifetime of an energy level produces a Lorentzian line profile and how the natural linewidth can be broadened by Doppler broadening, pressure broadening, transit time broadening and saturation broadening.
We look at the principles of operation of prism spectrometers and grating spectrometers and discuss operating characteristics (speed, resolving power, spectral transmission and free spectral range).
We look at several examples of tunable lasers and discuss nonlinear optics as a mechanism to increase the region of the spectrum available from laser sources.
We use the classical electron oscillator model to derive the functional form of the index of refraction in material as well as the absorption, which we relate to the cross section.
Lecture recordings from Physics 268 at San Jose State University. 75 minute enhanced audio epsiodes will be added on Monday and Wednesday nights throughout Fall of 2009.
