optical pumping experiment

Optical pumping | physics | Britannica

Optical pumping, in physics, the use of light energy to raise the atoms of a system from one energy level to another. A system may consist of atoms having a random orientation of their individual magnetic fields. When optically pumped, the atoms will undergo a realignment of individual magnetic fields with respect to the direction of the light beam; that is, there will be a rearrangement of ...

Experiment: Optical Pumping

This experiment introduces the method of optical pumping. The pumping light is produced with the help of a gas discharge in the investigated substance. For the detection of the optical pumping effect nuclear magnetic resonance (NMR) in a weak magnetic field is used.


OPTICAL PUMPING OF RUBIDIUM . 1. INTRODUCTION Optical pumping [123] is a process used in high frequency spectroscopy, developed by A. Kastler who was awarded the Nobel Prize for this in 1966. In this experiment, anomalous Zeeman transitions in the ground state of . 87Rb and 85Rb with σ+- and σ--circular-polarized pumping light are observed

Optical Pumping - California Institute of Technology

using optical pumping, and we will do that in this lab. 1 Prelab I 1.1 Rubidium's atomic energy level structure Rubidium in its atomic state has just one valence electron and can be well approximated by a one-electron-atom model. Its nuclear properties are dif-ferent from Hydrogen, however, and this will give it a di erent energy-level structure.

Experiments in Modern Physics P451: Optical Pumping of Rb ...

Optical pumping apparatus. cell, and an electronics unit to control all these compo-nents. In addition to the TeachSpin components, the experiment also makes use of a Radio-Frequency (RF) function generator, a frequency counter (in order to ac-curately measure the frequency of the applied RF eld),

Optical Pumping - an overview | ScienceDirect Topics

In the ideal optical pumping experiment, the polarization of the laser is assumed to be exactly as specified—100% circularly polarized, for example. Because of imperfect polarizers, natural birefringence in windows, and reflection effects which occur in a real experimental situation, this is often not the case.

M.I.T. Junior Lab 8.13/ 8.14

R. Benumof, "Optical Pumping Theory and Experiment", American Journal of Physics, 33, pp.151-160, (1965) M. Nagel and F. E. Haworth, "Advanced Laboratory Experiments on Optical Pumping of Rubidium Atoms-Part I: Magnetic Resonance", American Journal of Physics, 34, pp.553-558, (1966)


performing optical pumping experiments. You will probably need to review your atomic physics and possibly your optics. The use of circularly polarized light is also crucial to the optical pmping process. We strongly urge you to review these subjects as well as to look up most of …

Optical Pumping of Rubidium Vapor | Experiments ...

Optical Pumping experiment equipment. Rubidium vapor in a weak (~.01-10 gauss) magnetic field controlled with Helmholtz coils is pumped with circularly polarized D1 light from a …

Optical Pumping Experiment - Michigan State University

1. Using optical pumping, all the atoms are excited in M = +2 state. M=2. M=1 = − ⋅ e− 2T 12 ⋅ t 1 2 1 P δ δ: Excess charge population ; T 12: Transition Probability 2. M=2 state excess population is transferred to M=1 state with decreasing transmitted light intensity. 3. Due to …

Optical Pumping | Welcome to Physics 122

Modern optical pumping techniques were introduced by Alfred Kastler, a French Physicist who won the Nobel Prize in Physics in 1966 for his contributions. In this experiment you will explore optical pumping and its application to fundamental experiments in atomic physics. The atom you will be studying is rubidium, which is a very good ...

Optical Pumping and Magnetic Resonance

Optical Pumping is a method rst developed by Alfred Kastler1 (who was awarded the Nobel Prize in 1966), that has become a widely used technique in experimental physics ever since. Optical pumping is a process in which electromagnetic radiation is used to pump electrons into a well-de ned quantum state.

Optical Pumping 5p - Instructor.physics.lsa.umich.edu

Optical Pumping David Hucul Lab Partner: Mark Yeo University of Michigan Physics 442 Advanced Labs February 28, 2005 Note: this is the long lab report Abstract Optical pumping is observed in a Rb vapor cell. The magnetic resonances are measured as a function of RF power, the pumping time constants are measured experimentally, and the observation of

Optical pumping of Rubidium - High Energy Physics

Optical pumping is a process used in high frequency spectroscopy which was developed by ... The axis of the magnetic field coincides with the optical axis of the experiment set-up. The transmitted light is focused onto a silicon photodetector (12) by means of another lens (11) 5.

Optical pumping - Wikipedia

An optical pumping experiment is commonly found in physics undergraduate laboratories, using rubidium gas isotopes and displaying the ability of radiofrequency (MHz) electromagnetic radiation to effectively pump and unpump these isotopes.

Optical pumping - Wikipedia

Optical pumping is a process in which light is used to raise (or "pump") electrons from a lower energy level in an atom or molecule to a higher one. It is commonly used in laser construction, to pump the active laser medium so as to achieve population inversion.The technique was developed by 1966 Nobel Prize winner Alfred Kastler in the early 1950s.. Optical pumping is also used to cyclically ...

Optical Pumping - MIT

A. Kastler discovered optical pumping in the 1950's and received the Nobel Prize for his work in 1966. In this experiment you will explore the phenomenon of op-tical pumping and its application to fundamental mea-surements in atomic and nuclear physics with equipment originally built for the Junior Lab shortly after the pub-

The Zeeman effect and optical pumping in atomic rubidium ...

Abstract We describe an experiment developed recently in an undergraduate laboratory to measure the Zeeman splitting of the ground state of atomic rubidium. An optical pumping technique is employed and the magnetic field is calibrated by using free-electron spin resonance.

Hyperfine Spectrum of Rubidium: optical pumping experiments

Hyperfine Spectrum of Rubidium: optical pumping experiments Physics 480W (Dated: Spring 2011) I. PERSPECTIVE AND OBJECTIVE This experiment exploresthe hyperfine structure of the Rubidium atom and permits an experimental determi-nation of the quantum number most directly related to nuclear magnetism, the nuclear spin angular momentum,

OPT - Optical Pumping

1 Optical Pumping Description (OPT) This experiment is quantum mechanics in action. When a sample of gaseous atoms is placed in a static magnetic eld, the electronic states undergo Zeeman splitting in addition to ne-structure and hyper ne-

Optical Pumping - Galileo

The sensitivity of the technique results in part because absorption of one r.f. photon at Zeeman-splitting resonance leads to the absorption of one optical photon, and this amounts to an enormous power gain. You should be familiar with the principles of optical pumping before you begin the experiment.

Optical Pumping: the movie (Part 1) - YouTube

6/13/2008· For the Love of Physics - Walter Lewin - May 16, 2011 - Duration: 1:01:26. Lectures by Walter Lewin. They will make you ♥ Physics. Recommended for you

Optical Pumping | Advanced Lab

Nov. 19, 2007. The Physics-111 Optical Pumping experiment utilizes radio-frequency transitions between Zeeman sublevels split in energy in an external magnetic field (for example, the field of the Earth). The experiment illustrates how an optical-pumping device can be used as a magnetometer.

Optical Pumping, an Advanced Lab Experiment - …

The resurgence of interest in atomic physics makes hands-on experiments exploring atomic structure an important component of an advanced laboratory program. Developed in the 1950's, Optical Pumping is still a powerful tool for this purpose. This paper will describe a laboratory apparatus and a set of experiments which by providing a detailed look at the structure of atomic rubidium, not only ...


Alfred Kastler, a French physicist, introduced modern optical pumping in 1950 and, in 1966, was awarded a Nobel Prize " for the discovery and development of optical methods for studying hertzian resonances in atoms." In these laboratory experiments you will explore

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Optical-Pumping Method 1 Purpose The object of this experiment is to measure the energy splitting of the hyperfine structure of the lowest energy state of rubidium which is subjected to a uniform magnetic field whose magnitude can be determined by other means. …

quantum mechanics - Why does optical pumping of …

The optical pumping experiment of Rubidium requires the presence of magnetic field, but I don't understand why. The basic principle of pumping is that the selection rule forbids transition from $...

Optical Pumping - University of Michigan

Optical Pumping Optical pumping uses light to affect the internal degrees of freedom of a sample of atoms in a vapor. These internal degrees of freedom are angular momentum states of the atomic ground state, which are populated when light is absorbed and emitted. This experiment …

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