Wed, 04 Nov 2009 17:53:45 -0800 Peter Beyersdorf http://www.sjsu.edu/faculty/beyersdorf/ Podcast Maker v1.4.0 - http://www.lemonzdream.com/podcastmaker Recordings of Peter Beyersdorf's Physics/Chemistry 268 (Laser Spectroscopy) class at San Jose State University for the Fall of 2009 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. en Peter Beyersdorf peter.beyersdorf@sjsu.edu http://www.sjsu.edu/faculty/beyersdorf/Phys268/laser%20spectroscopy%20podcat_144.jpg http://www.sjsu.edu/faculty/beyersdorf/ 98 144 Natural Sciences Higher Education byersdorf, beiersdorf, biersdorf, demtroder no Peter Beyersdorf 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. http://www.sjsu.edu/faculty/beyersdorf/Phys268/11-4%20Nonlinear%20Spectroscopy.m4a Wed, 04 Nov 2009 17:45:29 -0800 Natural Sciences no 01:17:12 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf We look at basic methods of emission spectroscopy including laser induced fluorescence, resonant enhanced multi-photon emission (REMPI), intermodulated fluorescence and stimulated emission pumping. http://www.sjsu.edu/faculty/beyersdorf/Phys268/10-28%20Emission%20Spectroscopy.m4a Wed, 28 Oct 2009 17:21:23 -0700 Natural Sciences no 01:13:59 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf WE look at basic techniques of absorption spectroscopy including direct detection, frequency modulation, intracavity absorption and cavity ringdown spectroscopy. http://www.sjsu.edu/faculty/beyersdorf/Phys268/10-26%20Absorption%20Spectroscopy.m4a Mon, 26 Oct 2009 17:25:31 -0700 Natural Sciences no 01:17:07 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf 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. http://www.sjsu.edu/faculty/beyersdorf/Phys268/10-21%20spectral%20line%20profiles.m4a Wed, 21 Oct 2009 17:25:29 -0700 Natural Sciences no 01:15:28 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf We look at how interferometers can be used to measure wanelength. http://www.sjsu.edu/faculty/beyersdorf/Phys268/10-12%20Interferometers.m4a Mon, 12 Oct 2009 17:31:14 -0700 Natural Sciences no 01:15:40 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf 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). http://www.sjsu.edu/faculty/beyersdorf/Phys268/10-7%20Spectrometer%20Operation.m4a Wed, 07 Oct 2009 17:25:40 -0700 Natural Sciences no 01:19:02 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf We consider the advantages and disadvantages of three classes of photodetectors: photodiodes, photomultiplier tubes and thermal detectors. We consider the advantages and disadvantages of three classes of photodetectors: photodiodes, photomultiplier tubes and thermal detectors. http://www.sjsu.edu/faculty/beyersdorf/Phys268/10-5%20Photodetectors.m4a Mon, 05 Oct 2009 18:06:33 -0700 Natural Sciences no 01:20:55 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf 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 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. http://www.sjsu.edu/faculty/beyersdorf/Phys268/9-28%20Tunable%20Lasers.m4a Mon, 28 Sep 2009 17:23:33 -0700 Natural Sciences no 01:14:18 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf We look at 3-level and 4-level gain systems in laser amplifiers, discuss optical cavities and tuning elements of laser oscillators. We look at 3-level and 4-level gain systems in laser amplifiers, discuss optical cavities and tuning elements of laser oscillators. http://www.sjsu.edu/faculty/beyersdorf/Phys268/9-23%20Laser%20Fundamentals.m4a Wed, 23 Sep 2009 17:46:35 -0700 Natural Sciences no 01:18:47 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf We look at an example of calculating the bond length and bond strength of HCl from a measured mid IR absorption spectrum. We look at an example of calculating the bond length and bond strength of HCl from a measured mid IR absorption spectrum. http://www.sjsu.edu/faculty/beyersdorf/Phys268/9-21%20Molecular%20Absorption.m4a Wed, 23 Sep 2009 17:45:09 -0700 Natural Sciences no 01:02:02 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf We look at energy levels associated with rotation and vibration of molecular bonds We look at energy levels associated with rotation and vibration of molecular bonds http://www.sjsu.edu/faculty/beyersdorf/Phys268/9-16%20Molecular%20Energy%20Levels.m4a Wed, 23 Sep 2009 17:43:32 -0700 Natural Sciences no 01:20:38 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf 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. 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. http://www.sjsu.edu/faculty/beyersdorf/Phys268/9-14%20Energy%20Levels.m4a Mon, 14 Sep 2009 17:40:48 -0700 Natural Sciences no 01:15:57 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf We look at an application of our previous quantum treatment of the two-level atom for measuring G the universal gravitational constant. We look at an application of our previous quantum treatment of the two-level atom for measuring G the universal gravitational constant. http://www.sjsu.edu/faculty/beyersdorf/Phys268/9-9%20Gravity%20Measurements.m4a Wed, 09 Sep 2009 17:30:32 -0700 Natural Sciences no 01:11:38 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf We look at absorption as a quantum effect and introduce the Einstein A and B coefficients for stimulated and spontaneous emission. We look at absorption as a quantum effect and introduce the Einstein A and B coefficients for stimulated and spontaneous emission. http://www.sjsu.edu/faculty/beyersdorf/Phys268/9-2%20Quantum%20Model%20of%20Absorption.m4a Wed, 02 Sep 2009 17:29:05 -0700 Natural Sciences no 01:17:05 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf 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. 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. http://www.sjsu.edu/faculty/beyersdorf/Phys268/8-30%20Absorption.m4a Mon, 31 Aug 2009 17:25:41 -0700 Natural Sciences no 01:11:40 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf We investigate absorption of light by matter using the classical electron oscillator model. In the process we introduce phasor notation. We investigate absorption of light by matter using the classical electron oscillator model. In the process we introduce phasor notation. http://www.sjsu.edu/faculty/beyersdorf/Phys268/8-26%20Classical%20Electron%20Oscillator%20Model.m4a Wed, 26 Aug 2009 17:30:21 -0700 Natural Sciences no 01:12:13 byersdorf, beiersdorf, biersdorf, demtroder Peter Beyersdorf This is the green sheet that describes the class. This is the green sheet that describes the class. http://www.sjsu.edu/faculty/beyersdorf/Phys268/Physics%20268%20Syllabus.pdf Wed, 26 Aug 2009 10:02:48 -0700 Natural Sciences no 00:00:00