Synchronous Spin-Exchange Optical Pumping
Figure 1. Essential components of synchronous spin-exchange optical pumping. An NMR bias field B 1 (t) is applied as a sequence of short alkali 2 π pulses, allowing the atoms to be optically pumped with resonant light perpendicular to B 1 with periodic polarization reversals from the polarization modulators. Spin-exchange collisions …
Optical Pumping | Welcome to Physics 122
1. Nobel Prize. Overview. 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 ...
A Conceptual Tour of 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. This experiment uses two isotopes of atoms of rubidium vapor, 85Rb and 87Rb. Light given off by a rubidium lamp is first collimated into a beam by a 50 mm focal length lens and then passed through ...
Optical Pumping of Rubidium Vapor
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 f=1 f=2 f=1 5P 5S P P ...
Simpli ed approach for quantitative calculations of …
PACS. 32.10.Fn Fine and hyper ne structure { 32.80.Xx Level crossing and optical pumping 1 Introduction Preparation of the internal state of an atomic or molecular system by optical pumping was initially developed as a technique in the 1950's by Alfred Kastler [1,2], and the theoretical framework was well developed already in the 1970s
OPTICAL PUMPING OF RUBIDIUM VAPOR
Introduction. The process of optical pumping is a beautiful example of the interaction between light and matter. In the Advanced Lab experiment, you use circularly polarized …
OPT
This means that, now, the atomic vapor will absorb some of the optical pumping light, and the photodetector will read a lower light level. 5 Experimental setup. The experimental setup is described in the Optical Pumping Video, in the photographs shown in Figs. 1,2, and3, and also in the schematic drawing of Fig.4.
Optical pumping | Atomic transitions, Laser light, Energy …
energy level. 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 ...
Optical Pumping | Advanced Lab
Optical Pumping Description (OPT) Note that there is NO eating or drinking in the 111-Lab anywhere, except in rooms 282 & 286 LeConte on the bench with the BLUE stripe around it. Thank You, the Staff. This experiment is quantum mechanics in action. When a sample of gaseous atoms is placed in a static magnetic field, the electronic states ...
[2311.02941] Optical pumping of ${mat{5s4d} ^1…
Title: Optical pumping of ${mat{5s4d} ^1mat{D}_2}$ strontium atoms for laser cooling and imaging. Authors: Jens Samland, Shayne Bennetts, Chun-Chia Chen, Rodrigo González Escudero, Florian Schreck, Benjamin Pasquiou.
Optical Pumping of Rubidium Vapor
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 rubidium rf discharge lamp. The degree of magnetization of the vapor is inferred from a differential measurement of its opacity to the pumping radiation.
Optical Pumping
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 …
Optical Pumping
is measured as a function of the intensity of the pumping light, and the results are compared with a theory of competing rate processes pumping versus …
OPTICAL PUMPING | NIST
Using the spin exchange optical pumping (SEOP) method, polarization of the 3 He gas involves three steps. Enclosed inside the glass cell is ~100 mg of Rubidium (Rb) and Potassium (K). The cell can be pressurized up to 3 atm depending on the instrument usage. Most of the gas is 3 He while only a small volume (0.06-0.13 atm) is N 2.
Optically Pumped Atoms | Wiley Online Books
Covering the most important knowledge on optical pumping of atoms, this ready reference is backed by numerous examples of modelling computation for optical pumped systems. The authors show for the first time that modern scientific computing software makes it practical to analyze the full, multilevel system of optically pumped …
Chapter 1 Optical Pumping
the nature of optical pumping suppose the absorbing atoms can be represented by the simple spin system shown in Fig. 1.2. Absorbed photons will take the absorbing atom from the M=-1, ground state to the excited state, which then decays equally to all three M statesofthegroundstate. SincethereisnopathtotaketheM=0,andM=+1groundstates back to …
OPTICAL PUMPING OF RUBIDIUM
1. Introduction 2. Theory A. Structure of alkali atoms B. Interaction of an alkali atom with a magnetic field C. Photon absorption in an alkali atom D. Optid pumping in rubidium E. Zero field transition F. Rf spectroscopy of IZbgs and ~b*' G. Transient effects 3. Apparatus A. Rubidium discharge lamp B. ~etktor c. optics
Optical Pumping: An Introduction | American Journal of …
Robert Bernheim, Ernst K. Franke; Optical Pumping: An Introduction, American Journal of Physics, Volume 35, Issue 2, 1 February 1967, Pages 167–168, https:
Optical pumping of a single hole spin in a …
Figure 4: Dependence of optical spin pumping on magnetic field and applied bias. a, Measured contrast for one-colour excitation, either or polarization, as a function of external magnetic field ...
OPTICAL PUMPING OF HELIUM IN THE $sup 3$S$sub 1
The alignment of He/sup 4/ atoms in the (n = 2, metastable) /sup 3/Si/ sub 1/ state is described. Metastable atoms are produced by a r-f discharge in a glass tube containing a few nim of pure helium, and the one micron pumping light (2/sup 3/P-2 /sup 3/S) is provided by a helium lamp. A resonance signal is obtained froni radio frequency ...
I Optical Pumping
By optical pumping, polarization of the spin vectors is produced, and macroscopic magnetization of the medium is obtained. The chapter states the principles of optical pumping and discusses the characteristics of the optical pumping methods. Optical pumping leads to a simple device to study radiofrequency resonance, to investigate …
Phys. Rev. A 97, 013419 (2018)
The fit parameters, viz., the absolute value of κ 0, the optical pumping saturation power P sat, and the ratio γ se / γ 1, are well described by the experimental conditions and yield absolute values for γ 1 and γ se. The latter is consistent with the previously published Cs-Cs spin-exchange relaxation cross section.
Optical Pumping
The most common optically pumped lasers are doped-insulator solid-state lasers. As the host medium (a laser crystal, glass or piece of ceramic) is electrically insulating, optical pumping is the only way to supply the …
A path to scaling helium-3 spin-exchange optical pumping
In the SEOP method, 3 He nuclei are polarized via collisions with optically pumped alkali atoms. 20 Compared with MEOP, SEOP is a slow process, with pumping spin-up time constants ( t u p ) of several hours.Reaching high polarizations therefore requires an Optical Pumping Cell (OPC) with a long longitudinal relaxation time …
Optical Pumping
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 …
Theoretical and experimental results of optically pumped …
1. Introduction. Optical pumping is a light-induced process that changes the optical properties of an atomic medium [1].It is an important method to get the alkali atoms (Na, K, Rb, Cs) prepared in definite quantum states [2].But most of the optical pumping applications are based on vapor of Rb, Cs and K, because their resonant D lines in the …
An optical pumping primer | Interactions
This pedagogical paper introduces the basic ideas of optical pumping. Some of the various optical pumping mechanisms are discussed, and illustrated by diagrams showing the experimental apparatus. The density matrix formalism is introduced and used to quantitatively examine the effects of optical pumping. Next some of the various spin …
Optical Pumping
1. OPTICAL PUMPING. Optical pumping involves use of an auxiliary source of light that is absorbed by the active medium to raise electrons to high-lying energy levels. This has …
Optical Pumping
Efficient optical pumping requires good spectral matching of the pump diode wavelength with the absorption spectrum of the laser material. Unfortunately, many laser materials have narrow absorption peaks, so careful attention is needed to insure the pump wavelength remains in the absorption band for all operating conditions.Table 8.1
Transverse optical pumping of spin states
Optical pumping is an efficient method for initializing and maintaining atomic spin ensembles in a well-defined quantum spin state. …
