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Optical Pumping - an overview ScienceDirect Topics

The technique named “ optical pumping ” consists of absorbing pump light in order to excite erbium ions and provide population inversion in a given energy band. As seen in Figure 4.1, optical pumping may efficiently be performed around λ=0.98 μm from the fundamental ground state level 4 I 15/2 into the 4 I 11/2 level. Optical pumping may also be performed in the short-wavelength band of ...

Optical Pumping - an overview ScienceDirect Topics

Optical Pumping. Optical pumping can be performed in flow mode, where a continuous stream of hyperpolarized nuclear spins is generated, or in batch mode, where a certain amount of gas is first polarized, and then this polarization is used up during the MRM experiment. From: Encyclopedia of Spectroscopy and Spectrometry (Second Edition), 2010

Optical pumping physics Britannica

2020-7-20  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 ...

OPT - Optical Pumping

2019-12-19  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 Advanced Lab

2020-6-28  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 - galileo.phys.virginia.edu

Optical pumping is a technique for producing spin alignment in a gas of suitable atoms. Circularly polarized light is applied at the frequency of an electronic transition from the ground state, causing transitions to an excited state. ... What one normally does is a "double" resonance experiment, applying an r.f. field at the frequency ...

Optical Pumping - University of Michigan

2002-9-3  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 reveals many phenomena of

OPTICAL PUMPING OF RUBIDIUM - Department of Physics

2014-1-6  The term "optical pumping" refers to a process which uses photons to redistribute the states occupied by a collection of atoms. For example, an isolated collection of atoms in the form of a gas will occupy their available energy states, at a given temperature, in a

Optical Pumping and Magnetic Resonance

2013-11-19  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

Optical Pumping - MIT

2011-2-17  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-

Optical pumping physics Britannica

2020-7-20  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 ...

Hyper ne Spectrum of Rubidium: optical pumping

2020-3-8  Optical pumping, nevertheless provide a good discussion of atomic energy states directly re-lated to our experiment, and to the Rubidium neutral atomic ground state in particular. (b) Section 3.3 Help with DAQ and DSO’s, (data FIG. 1. This plot of detector signal vs. magnetic eld demon-strates optical pumping for zero and very low magnetic elds.

OPTICAL PUMPING - galileo.phys.virginia.edu

Optical pumping is a technique for producing spin alignment in a gas of suitable atoms. Circularly polarized light is applied at the frequency of an electronic transition from the ground state, causing transitions to an excited state. ... What one normally does is a "double" resonance experiment, applying an r.f. field at the frequency ...

Optical Pumping - MIT

2011-2-17  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-

/home/dbpengra/phys432/Optical pumping/optical

2018-4-27  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. From the method called “optical pumping”, you will deduce

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

2005-5-4  pumping time constants are measured experimentally, and the observation of Lorentzian line shapes is noted. Theory Optical pumping occurs when atoms absorb radiation into some of its various internal degrees of freedom. In this experiment, we used the various projections of the total angular momentum (electronic,

OPTICAL PUMPING OF RUBIDIUM OP1-B Guide to the

2016-10-25  D. Optical pumping in rubidium 2-11 E. Zero field transition 2-14 F. Rf spectroscopy of 85 Rb and 87Rb 2-15 G. Transient effects 2-17 3. Apparatus A. Rubidium discharge lamp 3-1 B. Detector 3-3 C. Optics 3-5 D. Temperature regulation 3-10 E. Magnetic

Optical Pumping - University of Michigan

2002-9-3  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 reveals many phenomena of

Calculate Geomagnetic Field in Chongqing by Optical ...

ZHOU Jian,YU Xi,WANG Yu(Department of Physics,Fudan University,Shanghai 200433,China);Abnormal optical pumping signals in optical-magnetic resonance experiment[J];Physics Experimentation;2009-04 7 ZHANG Yuan-yuan,YAN Wen(Department of Physics,Zhejiang University,Hangzhou 310027,China); Review and improvement on measuring terrestrial magnetic field by optical pumping magnetic

Optical Pumping of Rubidium Vapor - MIT

2005-4-23  experiment. 2. THEORY 2.1. Optical Pumping of Rubidium Vapor We investigated the radio-frequency transitions in Rb87 and Rb85. Rubidium is an alkali metal atom that has a 2S 1/2 ground state and 2 P 1/2 and 2 3/2 excited states (Figure 1). The optical transitions between the ground state and the two excited states are the origin of the D 1 f=2 ...

Hyper ne Spectrum of Rubidium: optical pumping

2020-3-8  Optical pumping, nevertheless provide a good discussion of atomic energy states directly re-lated to our experiment, and to the Rubidium neutral atomic ground state in particular. (b) Section 3.3 Help with DAQ and DSO’s, (data FIG. 1. This plot of detector signal vs. magnetic eld demon-strates optical pumping for zero and very low magnetic elds.

PHY 451 Optical Pumping - Michigan State University

2014-8-22  Optical Pumping of Rb Vapor About the experiment. This experiment is quantum mechanics in action. In a sample of Rb in a magnetic field, certain excited Zeeman levels are selectively populated using circularly polarized light at the transition frequency.

Optical Pumping Experiment - web.pa.msu.edu

2010-8-17  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 stimulated emission, the population inversion is ...

Optical Pumping of Rubidium Vapor - MIT

2005-4-23  experiment. 2. THEORY 2.1. Optical Pumping of Rubidium Vapor We investigated the radio-frequency transitions in Rb87 and Rb85. Rubidium is an alkali metal atom that has a 2S 1/2 ground state and 2 P 1/2 and 2 3/2 excited states (Figure 1). The optical transitions between the ground state and the two excited states are the origin of the D 1 f=2 ...

Optical Pumping Theory and Experiments: American

2019-3-20  The theory of several experiments involving optical pumping is presented in a simplified form. Vector methods are employed to discuss the hyperfine energy levels of an atom in a weak magnetic field, and, for the purposes of considering relaxation time, the system is assumed to have only two effective levels. The Breit-Rabi equation for the ground-state hyperfine Zeeman energy levels of an ...

Cesium, Optical Pumping, and Parity Non-Conservation

2002-9-18  2 Optical Pumping 2.1 Motivation While the ultimate goal of our experiment is to measure cesium’s anapole moment, the work done this summer involved a preliminary study that will lay the groundwork for the nal experiment. Speci cally, we use the technique of optical pumping to manipu-

Optical Pumping and Magnetic Resonance

2013-11-19  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

OPTICAL PUMPING OF RUBIDIUM - Department of Physics

2011-11-26  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

The Zeeman effect and optical pumping in atomic

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.

Optical Pumping and Vibrational Cooling of

The optical pumping should not be limited to cold samples of molecules prepared via photoassociation of cold atoms but should also be applicable to other cases, such as molecules in a molecular beam. Broadband shaped optical pumping could also be used as a repumping laser in laser manipulation of atoms and molecules, opening prospects in laser ...

Optical Pumping Theory and Experiments: American

2019-3-20  The theory of several experiments involving optical pumping is presented in a simplified form. Vector methods are employed to discuss the hyperfine energy levels of an atom in a weak magnetic field, and, for the purposes of considering relaxation time, the system is assumed to have only two effective levels. The Breit-Rabi equation for the ground-state hyperfine Zeeman energy levels of an ...

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 ...

Experiment S-10: Optical Pumping Physics 510

2007-1-15  Experiment S-10: Optical Pumping Physics 510 Darren Puigh (Dated: February 27, 2006) This experiment used the process of optical pumping to investigate the hyperfine splitting of two rubidium isotopes in the presence of an external magnetic field. The magnetic field caused a splitting in the energy of the mF magnetic sublevels. Shining a ...

Optical Pumping Control Unit - New York University

2013-9-10  Optical Pumping Control Unit Introduction This document is gives an overview of the optical pumping control unit. Magnetic Fields Magnetic Field Coils: In the optical pumping experiment there are three sets of coils that allow one to control the magnetic elds seen by the atoms. Each set of coils is in a Helmholtz con guration, which

Optical Pumping and Vibrational Cooling of

The optical pumping should not be limited to cold samples of molecules prepared via photoassociation of cold atoms but should also be applicable to other cases, such as molecules in a molecular beam. Broadband shaped optical pumping could also be used as a repumping laser in laser manipulation of atoms and molecules, opening prospects in laser ...

Experiments in Modern Physics P451: Optical Pumping of

2014-1-9  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

Double-resonance and optical-pumping experiments on ...

2002-7-24  conventional optical-pumping experiments using, for example, circularly polarized light, the experiments ... present experiment is due to poor magnetic-field sta-bilization, that is, the field fluctuates about 10 parts in 106 in the time taken to trace the resonance. In a sim-

Spatially truncated optical pumping cooling -

To model the optical pumping process in the first step of STOP cooling, each of these atoms is assumed to randomly scatter photons from the first STOP cooling beam such that each photon scatter has a 50% probability of transferring the atom into the bright state. ... For our STOP cooling experiment consisting of 3 blocks of 20 successive cycles ...

The Zeeman effect and optical pumping in atomic

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.

【pumping】什么意思_英语pumping的翻译_音标_读音_用法 ...

2009-6-30  A fiber coupled diode laser was used as pumping source in experiment. 实验采用光纤耦合输出激光二极管(LD)纵向 抽运 单块激光器,当 抽运 功率最高用到2.83W时。 参考来源 - 期刊学术社区