US5272436A - Optical pumping, resonance magnetometer using ...
Optical pumping magnetometer with controlled polarization. This magnetometer comprises a linear polarizer (16), whose orientation is controlled (42,44) in such a way that the detection signal is at a maximum, no matter what the orientation of the field to be measured. Application to the construction of isotropic magnetometers.
اقرأ أكثر
US7016573B2 - Optical fiber pump multiplexer - Google Patents
Multi-core fiber for optical pumping device and method of manufacturing the same, optical pumping device, fiber laser, and fiber amplifier US20090148098A1 (en) * : : Gsi Group Limited: Device for coupling radiation into or out of an optical fibre US20090251770A1 (en) * …
اقرأ أكثر
Optical Pumping | Advanced Lab
6.5 Timescales for optical pumping using square wave amplitude modulation of the rf eld. . . . 17 7 Analysis 17 References 19 1. 1 Introduction One of the great early successes of quantum mechanics was its use to describe the structure of atoms and molecules. As is now well-known, the internal structure of atoms and molecules can be described ...
اقرأ أكثر
Optical Pumping | 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. TeachSpin's Optical Pumping apparatus explores the atomic physics of both isotopes of natural rubidium.
اقرأ أكثر
Phys. Rev. A 99, 013420 (2019) - Sources of heading errors ...
Figure 5. Population of the F = 4 ground-state levels estimated by rate equations due to optical pumping with circular polarized radiation σ + at different angles α between magnetic field B 0 ⃗ and beam propagation as given by the color. The corresponding numbers at the color map are given in degrees. For the upper and lower picture we assume an integrated laser power of 0.1 and 100 μ W ...
اقرأ أكثر
OPTICAL PUMPING OF RUBIDIUM VAPOR
OPTICAL PUMPING OF RUBIDIUM VAPOR V1.3 R. A. Schumacher, February 2007 I. INTRODUCTION The primary goal of this experiment is to measure the Zeeman splitting of the ground states of neutral rubidium atoms in a weak magnetic field and to determine …
اقرأ أكثر
Optical Pumping Control Unit - KFUPM
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
اقرأ أكثر
Optical Pumping Contents
1 Optical Pumping Description (OPT) 2 Optical Pumping Pictures 3 Before the Lab 4 Introduction 5 Preparation Before The Lab 6 Experimental Procedure 7 DS345 generator 7.1 The Effect of Temperature on Signal Strength 8 Analysis 8.1 Data Analysis 8.1.1 Overview 8.1.2 Nuclear Spins 8.1.3 Earth's Magnetic Field 8.1.4 Errors in the Field 9 Notes ...
اقرأ أكثر
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.
اقرأ أكثر
Optical Pumping Research Papers - Academia.edu
Chemistry, Assembly, Luminescence, Optical physics Analysis of various optical pumping schemes for liquid oxygen lasers The search for an ideal lasing species with en-ergy levels having appropriate meta-stable lifetime has been a quest for researchers from the day of laser invention.
اقرأ أكثر
Optical-pumping magnetometer | instrument | Britannica
Other articles where Optical-pumping magnetometer is discussed: Earth exploration: Magnetic methods: …are made with proton-precession or optical-pumping magnetometers, which are appreciably more accurate. The proton magnetometer measures a radio-frequency voltage induced in a coil by the reorientation (precession) of magnetically polarized protons in a container of ordinary water.
اقرأ أكثر
Optical Pumping of Rubidium - home.sandiego.edu
an optical detector. FIG. 3. 1 An overhead view of the of the optical pumping apparatus used The rubidium cell is surrounded by two sets of Helmholtz coils in order to produce magnetic elds. One eld should be aligned with the magnetic axis of the earth and …
اقرأ أكثر
An Optical Amplifier Pump Laser Reference Design Based …
An Optical Amplifier Pump Laser Reference Design Based on the AMC7820 7 For system stability, note that maintaining ±0.1°C temperature stability with the newer laser still may result in a change of 0.002nm out of the 975nm center wavelength.
اقرأ أكثر
Optical Pumping of Rubidium - University of San Diego
Optical Pumping of Rubidium Jonathon Garamella (Dated: 27 March 2011) Optical Pumping was used to examine the Zeeman splitting associated with the hyper ne structure of Rubid-ium. The g-factors, speci cally g f, were found to be 0:48 0:05 and 0:32 0:05 for 87Rb and Rb respectively in the low magnetic eld strength Zeeman region.
اقرأ أكثر
(PDF) Double resonance optical pumping effects in ...
We have studied double-resonance optical pumping (DROP) as a function of the polarization combination of lasers, laser power, and the alignment of lasers in the 5 S 1 ∕ 2 – 5 P 3 ∕ 2 – D 3 ...
اقرأ أكثر
A Conceptual Tour of Optical Pumping
A Conceptual Tour of Optical Pumping Barbara Wolff-Reichert July, 2009 With no current in the Helmholtz coils, the Zeeman splitting, caused by the horizontal component of the Earth's magnetic field, has allowed the atoms to be "pumped" into the less absorbent states. And, although the increasing
اقرأ أكثر
OPTICAL PUMPING - galileo.phys.ia.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. Each photon absorbed adds one quantum of angular momentum in the direction of the axis of the light beam to the ...
اقرأ أكثر
Optical Pumping - JSTOR
Optical pumping was first observed, in the manner described, by a group in Paris (3), following suggestions by Kastler, Bitter, and Brossel (4) of a way to measure the hyperfine splitting in the excited states of atoms where atomic-beam techniques cannot be used, and independently by R. H. Dicke and his students at Princeton (5), who were
اقرأ أكثر
Optical Pumping of Mesospheric Sodium: a New Measurement ...
The first observation of laser-induced optical pumping in a remote sensing application is reported. We have observed a large variation in the amount of laser light resonantly backscattered from the earth's mesospheric sodium layer depending on the laser polarization. This is consistent with optical pumping of the mesospheric sodium atoms. A new lidar capability is being developed based on ...
اقرأ أكثر
Optical Pumping - MIT
6. If the earth's eld were that of a idealized 'point' magnetic dipole at the center and parallel to the rotation axis, then what would be the direction of the eld at the latitude of Boston? II. INTRODUCTION A. Kastler discovered optical pumping in the 1950's and received the Nobel Prize for his work in 1966. In
اقرأ أكثر
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 the 1966 Nobel Prize winner Alfred Kastler in the early 1950s.. Optical pumping is also used to ...
اقرأ أكثر
SECTION 5: OPTICAL AMPLIFIERS
Optical Gain Rare earth doped optical amplifiers work much like a laser. The primary difference is that they do not have a resonator. Amplification occurs primarily through the stimulated emission process. The medium is pumped until a population inversion state is achieved. Pump powers are typically several 20-250 mW. An isolator is used to reduce
اقرأ أكثر
Optical pumping, explained by RP Photonics Encyclopedia ...
Techniques of optical pumping are also used outside the area of laser physics, often in fundamental research.For example, various methods of laser cooling essentially depend on optical pumping of atoms or ions, for example suspended in an optical trap. In many cases, certain selection rules play a vital role, which reflect principles like the conservation of angular momentum: the absorption of ...
اقرأ أكثر
Enhanced light-matter coupling and optical pumping of THz ...
Request PDF | On Aug 29, 2021, J. Hawecker and others published Enhanced light-matter coupling and optical pumping of THz intersubband polaritons | Find, read and cite all the research you need on ...
اقرأ أكثر
A-4 Optical Pumping - Harvard University
the case where the intensity of the optical pumping light is weak, the characteristic time for the optical pumping process is the characteristic time between optical absorptions, a time that can be much longer than the 100 ns lifetime of the excited state. It is useful to conduct experiments with different optical pumping …
اقرأ أكثر
Optical Pumping - an overview | ScienceDirect Topics
One of the key issues here is the optical pumping of the rare-earth PWLs to generate acceptably high output power. Individual diode lasers or an array of diode lasers all on a single chip (called a diode bar) have been utilized as pumps. Both single and multimode diode lasers are available and have been used.
اقرأ أكثر
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 …
اقرأ أكثر
Phys. Rev. B 104, 064445 (2021) - Effect of optical $f ...
We considered the effect of optical pumping at the f − f transitions frequency on d − f superexchange in the rare-earth antiferromagnetic ferroborate Nd 0.5 Gd 0.5 Fe 3 (BO 3) 4 between Nd 3 + ions in the excited states of the 4 G 5 / 2, 2 G 7 / 2, and Fe 3 + in the ground state 6 A 1.
اقرأ أكثر
Earth exploration - Magnetic methods | Britannica
The optical-pumping magnetometer makes use of the principles of nuclear resonance and cesium or rubidium vapour. It can detect. Earth exploration - Earth exploration - Magnetic methods: Measurements can be made of the Earth's total magnetic field or of components of the field in various directions. The oldest magnetic prospecting instrument ...
اقرأ أكثر
PHY 451| Optical Pumping
Optical pumping has been widely used to exploring atomic energy states, atomic transitions, and atomic collisions. Several Nobel Prizes have been awarded for work in this area (eg. Alfred Kastler 1966). When a sample of gaseous atoms is placed in a static magnetic field, the electronic states undergo Zeeman energy level splittings in addition ...
اقرأ أكثر
Optical Pumping 5p - University of Michigan
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
اقرأ أكثر
Optical Pumping - an overview | ScienceDirect Topics
An optical pumping magnetometer takes advantage of the differences between electron energy levels in an atom of alkali metal vapor. The energy of an electron can assume one of several levels, depending on the orbit the electron follows and the orientation of the magnetic moment of the electron with respect to the ambient magnetic field (parallel or antiparallel).
اقرأ أكثر
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.
اقرأ أكثر