Podcasts about byersdorf

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.

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

We look at transient effects in laser gain material, -switching and mode locking as methods to get short pulses.

Podcsat from 2008 of lecture on Raman spectroscopy. This is in place of the 11/9 lecture given about Raman spectroscopy, for which the audio didn't record properly.

Podcsat from 2008 of lecture on stimulated Raman scattering. This content was not covered in class this semester. This is for your interest only and will not be covered on exams.

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 how interferometers can be used to measure wanelength.

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

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

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 energy levels associated with rotation and vibration of molecular bonds

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

We look at absorption as a quantum effect and introduce the Einstein A and B coefficients for stimulated and spontaneous emission.

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 investigate absorption of light by matter using the classical electron oscillator model. In the process we introduce phasor notation.

We review midterm #4 as well as chapters 1-8 on vectors, kinematics, projectile motion, Newton's laws, and work and energy

We review oscillation and simple harmonic motion, fluid mechanics, waves and sound.

We look at wave effects for sound including interference and beat notes and the doppler shift caused by a moving listener or source.

We continue to look at mechanical waves, focusing on sound and hearing, specifically the decibel units for sound level.

We introduce waves by considering solutions to the wave equations for propagation along a string. We introduce the concepts of superposition and standing waves.

We introduce the continuity equation for mass and volume flow rate and the Bernoulli equation for relating pressure, height and speed of fluid.

We introduce density, pressure and the buoyant force and derive Pascal's law for fluids.

We look at parameters of periodic motion. Specifically we investigate simple harmonic motion and the pendulum.

Review of angular motion and equilibrium

We look at Newton's law of gravitation and introduce the universal gravitational constant. We also discuss escape velocity and black holes.

We discuss systems in equilibrium and introduce the frictional force.

We discuss how to use free body diagrams to solve problems involving forces.

We introduce Newton's 3 laws.

We derive the centripetal acceleration of an object moving in circular motion and also discuss the concept of relative motion where an objects velocity is described in a different reference frame than that in which it is desired.

We apply the equations of motion to problems in 2 dimensions.

We finish our introduction of vectors with an introduction of the dot product and the cross product. We introduce displacement, velocity and acceleration as parameters of motion

We look at dimensions and units of physical quantities and discuss the difference between scalars and vectors, as well as introduce vector addition. [note no audio due to technical issues]

We look at the behavior of electrooptic devices as amplitude and phase modulators.

We look at birefringence in crystals and discuss optical activity and the Faraday effect.

We look at the vectorial nature of light and describe polarization in terms of Jones vectors

Diffraction from a double slit is discussed. The convolution theorem is presented and the grating equation is derived. (incomplete)

We look at the relationship between far-field (Fraunhofer) diffraction and the Fourier transform, and explore the diffraction pattern of a uniformly illuminated circular aperture, which leads to the Rayleigh criterion for resolution in an optical system.

We look at Fraunhofer diffraction from a slit and for a Gaussian beam. We use Huygen's principle and also discuss Babinet's principle

We discuss unconventional types of fibers including photonic crystal fibers

We introduce the basic principles and parameters associated with fiber optics

We introduce the coherence function and look at the relationship between coherence, bandwidth and linewidth.

Fourier Series are introduced and are generalized to the Fourier sine and cosine tansform

We look at the transmission of a Fabry-Perot interferometer and discuss properties like the free spectral range, finesse and linewidth.

We investigate the Michelson interferometer and the relationship between physical parameters and the interference term.