Laser Spectroscopy Podcast

Peter Beyersdorf

Education

Frequency: 1 episode/5d. Total Eps: 21

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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Laser frequency stabilization

Tuesday, December 1, 2009 • Duration 01:11:35

We look at sources of laser frequency noise and discuss feedback techniques using a reference cavity or a molecular transition to stabilize the laser frequency.

Ultrafast Spectroscopy

Thursday, November 19, 2009 • Duration 01:03:55

We look at pump probe methods using ultrafast pulses for high temporal resolution experiments.

Spectrometer Operation

Thursday, October 8, 2009 • Duration 01:19:02

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).

Photodetectors

Tuesday, October 6, 2009 • Duration 01:20:55

We consider the advantages and disadvantages of three classes of photodetectors: photodiodes, photomultiplier tubes and thermal detectors.

Tunable Lasers

Tuesday, September 29, 2009 • Duration 01:14:18

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.

Fundamentals of Lasers

Thursday, September 24, 2009 • Duration 01:18:47

We look at 3-level and 4-level gain systems in laser amplifiers, discuss optical cavities and tuning elements of laser oscillators.

Molecular Absorption

Thursday, September 24, 2009 • Duration 01:02:02

We look at an example of calculating the bond length and bond strength of HCl from a measured mid IR absorption spectrum.

Molecular Energy Levels

Thursday, September 24, 2009 • Duration 01:20:38

We look at energy levels associated with rotation and vibration of molecular bonds

Energy Levels

Tuesday, September 15, 2009 • Duration 01:15:57

We look at the Bohr model of the atom and see how it can be used to explain the line spectrum of Hydrogen, and then generalize to other atoms.

Gravity Measurements

Thursday, September 10, 2009 • Duration 01:11:38

We look at an application of our previous quantum treatment of the two-level atom for measuring G the universal gravitational constant.

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