The rf discharge lamp was the source of all our rf waves that pass through a. November 2007 new experiments with teachspin s optical pumping, making your spins follow the field. For the mathematics of the process of optical pumping i. Optical pumping control unit you may be wondering how one determines the position of the potentiometer that eliminates the vertical component of the eld, especially since the center of the coils is not accessible due to the presence of the.
Ill n these experiments, we will study the absorption of light by rubidium atoms, and as a prelude to that. Teachspins optical pumping apparatus explores the atomic physics of both isotopes of natural. Optical pumping of rubidium adam egbert,1, a will wiegand,1 and hannah sheppard2 1university of san diego 2university of san diego dated. Ill n this first experiment you will make an approximate measurement of the crosssection for the absorption. This experiment uses two isotopes of rubidium gas, 85rb and 87rb. Multiphoton absorption in optical pumping of rubidium. Due to the coupling between electron and nuclear spin via the hyperfine interaction, the technique is also of great current interest because it provides. In optical pumping of rubidium, a new kind of absorption occurs with a higher amplitude of radio frequency current. Teachspin s opia explores the atomic physics of both isotopes of natural rubidium. January 9, 2014 this experiment introduces you to the phenomenon of optical pumping i. Optical pumping allows us to examine the phenomenon of zeeman splitting. Optical pumping of rubidium university of san diego.
Teachspin optical pumping apparatus, and three digital. Teachspin optical pumping chapter 4 ill n this first. Pourmand department of physics, boston university, boston, massachusetts 02215, usa we report on the observation of zero fieldinduced transition, weak field and quadratic zeeman. View teachspin optical pumping chapter 4 from phys 301 at case western reserve university. The other references may provide useful background for atomic spectral notation, and the physics of the zeeman effect that is used in this experiment. Measurment of rb85 and rb87 nuclear spin and quadratic. You may follow the instructions in the teachspin manual1, pp. View teachspin optical pumping chapter 2 from phys 301 at case western reserve university. The j 12 rubidium ground states for the two isotopes are split by the hyper.
Determining gfactors in rubidium85 and rubidium87 using optical pumping will weigand, 1adam egbert, and hannah sadler university of san diego dated. Measurment of rb85 and rb87 nuclear spin and quadratic zeeman splitting dean henze, janet chao, kent lee, patrick smith university of san diego department of physics dated. The rf discharge lamp acts as the source of photons for the experiment, which are then passed through a. The loss of optical pumping is seen as a narrow dip around b0. Physics4412 optical pumping 3 k 52 and 87rb with k 32. Pdf optical pumping is to change the population number of atomic states by. Department of physics and astronomy michigan state university abstract. Optical pumping is a widely used and powerful technique for exploring atomic energy states, atomic transitions, and atomic colli sions using electromagnetism in the form of light, radio frequency, and uniform constant magnetic fields. Introduction using the teachspin optical pumping apparatus, you will investigate the lowfield resonances and the quadratic zeeman effect experiments 4b and 4c in. February 2008 quantum analogs, alpha election results. When a sample of gaseous atoms is placed in a static magnetic field, the. The term optical pumping refers to a process which uses photons to redistribute the states occupied by a collection of atoms. You will find pdf versions of these documents on the. June 2008 pulsed nmr on steroids, teachspin s new pulsedcw nmr.
The rubidium atom is an ideal model system for students. A virtual tour of teachspin s food truck for the physics mind featured apparatus. An image of the optical pump, taken from the teachspin website ref, is. A conceptual tour of teachspin s optical pumping optical pumping allows us to examine the phenomenon of zeeman splitting, a spreading of atomic energy sublevels in the presence of a magnetic field. Teachspin is dedicated to the design, manufacture, marketing and support of rugged, reliable, handson laboratory instruments that enable any school, no matter what the size or individual expertise of its faculty, to teach a wide variety of classic and modern upperlevel physics experiments. Newsletter 2 beyond the manual but latent in the apparatus. Teachspin s optical pumping apparatus explores the atomic physics of both isotopes of natural rubidium. A conceptual tour of optical pumping advanced labs. Some students have a difficulty in understanding the physics. The main reference for this investigation is the teachspin manual. The set up has an rf discharge lamp, interference lter, linear polarizer, quarter wave plate, rubidium absorption cell and optical detector in that order as seen in gure. Optical pumping of rb experiment david baxter indiana university, bloomington, in 47405 dated. Optical pumping of rubidium op1b guide to the experiment.
Opt optical pumping experimentation lab university of. Light given off by a rubidium lamp is first collimated into a. Teachspin optical pumping equipment control panel and pumping unit, ttl square wave pulse generator, oscilloscope with xy mode capability, dc voltmeter with 2 banana plug wires, compass, magnetic dipmeter. The setup for the experiment is a teachspin optical pumping apparatus which has, in order, a rf discharge lamp, interference lter, linear polarizer, quarter waveplate, the rubidium absorption cell, then the optical detector. Zaret department of chemistry and joint institute for laboratory astrophysics, university of colorado, boulder, colorado 80302 received 26 june 1969 a technique is described for the optical pumping of. We used a teachspin optical pumping apparatus for all parts of our experiment. Werner kiein optical pumping is a process used in high frequency spectroscopy which was developed by a. The right side of the optical rail provides key ingredients 2 and 3.
Introduction to teachspins diode laser spectroscopy. Teachspins optical pumping apparatus explores the atomic physics of both isotopes of natural rubidium. Muon physics, muon lifetime experiments, relativistic decay effects, advanced laboratory instrument by teachspin. Optical pumping is a widely used and powerful technique for exploring atomic energy states, atomic transitions, and atomic collisions using electromagnetism in the form of light, radio frequency, and uniform constant magnetic fields. In the optical pumping experiment there are three sets of coils. Pulsed nmr and optical pumping in his advanced lab, professor libbrecht was. I taught, and developed the advanced lab, at calvin college during 19802014 before taking a secondcareer position at teachspin. The other references may provide useful background for the zeeman effect aspects of this experiment. All profits from the sale of teachspin apparatus are assigned to the j. Muon lifetime experiments, relativistic decay effects, advanced laboratory instrument by teachspin. Apparatus for the experiment, we used a teachspin optical pumping apparatus. Optical pumping quark interactions experimentdept of physics. In both manual and programmed sweeps you will need to watch out for the. This chip is housed in an optical cavity to facilitate stimulated emission with one mirror slightly.
Optical pumping labscript introduction optical pumping is a technique whereby light can be used to create nonequilibrium occupation of atomic levels. This optical pumping lab might be considered a course in atomic physics with the topics. Physcis and diode laser spectroscopy of the teachspin manual for this lab dlsman 3. Teachspin apparatus offers your students a wide array of exciting and challenging handson physics experiments for their advanced physics lab, juniorsenior lab, modern lab, optics lab, senior project and even undergraduate research. Jimenez martinez, university of colorado at boulder in collaboration with nist.
Optical feedback from a grating, retroreflects laser light to create an 5p32 780. You will not be able to use your rst lab session e ectively unless you are already familiar with the various physical phenomena that contribute to the tuning of the laser and the broadening of optical tranisitions. The use of circularly polarized light is also crucial to the optical pumping process. Compendium of fundamental concepts you should know to. Black september 27, 2004 sometimes you want to magnetize a gas, to align all of the little magnetic moments of the gas atoms in the same direction. Determining gfactors in rubidium85 and rubidium87 using. Muon physics, muon lifetime experiments, relativistic. Optical pumping of rubidium university of wisconsin. Optical pumping of rubidium atoms, 85rband 87rb explore magnetic hyper. Reference sections pages topics teach spin manual1 optical pumping melissinos2 7.
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