Showing 01 - 12 of 139 Results

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Optical Pumping Massachusetts Institute of Technology

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-

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Optical Pumping California Institute of Technology

California Institute of Technology Physics 77 Optical Pumping Eric D. Black October 7, 2014 Sometimes you want to magnetize a gas, to align all of the little mag-netic moments of the gas atoms in the same direction. You might plan to have somebody inhale the polarized gas, then look at

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Optical Pumping New York University

California Institute of Technology Physics 77 Optical Pumping Eric D. Black September 27, 2004 Sometimes you want to magnetize a gas, to align all of the little mag-netic moments of the gas atoms in the same direction. You might plan to have somebody inhale the polarized gas, then look at

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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

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Optical Pumping University of Michigan

Optical pumping is important to a wide variety of applications from the laser, to precise measurements of atomic hyperfine level splittings and atomic clocks, sensitive measurements of weak magnetic fields, and recently to en-hance NMR and MRI. This experiment provides an array of measurement

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Glasses & Optical Wear Virginia Eye Institute

Short Pump Office and Optical Shop Virginia Eye Institute optical stops may have different participating insurance providers than the eye doctors at Virginia Eye Institute. Before purchasing glasses or contact lenses, please check with your insurance provider to ensure you’re eligible for benefits. When applicable, we’re happy to work

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High Sensitivity Optically Pumped Quantum Magnetometer

Quantum magnetometers based on optical pumping can achieve sensitivity as high as what SQUID-based devices can attain. In this paper, we discuss the principle of operation and the optimal design of an optically pumped quantum magnetometer.

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Short Pump Office Virginia Eye Institute

Our Short Pump Office is located at: 12018 West Broad Street, Suite 100 Henrico, VA 23233. Our Short Pump Office is located at: 12018 West Broad Street, Suite 100 Henrico, VA 23233. Virginia Eye Institute complies with applicable Federal civil rights laws and does not discriminate on the basis of race, color, national origin, age

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Optically-Pumped Magnetometers for MEG

optical magnetometers Optically Pumped Magnetometer (OPM) capable of recording biomagnetic signals; although the first attempts are much older (Livanov S. Knappe (&) National Institute of Standards and Technology, Boulder, CO 80303, USA e-mail: [email protected] T. Sander L. Trahms Physikalisch-Technische Bundesanstalt, 10587 Berlin, Germany

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Buy contact lenses online with big discounts! EuEyeWear

EuEyewear online since 2007. Buy contact lenses and cleaning solutions for contact lenses at discount prices up to 45% cheaper than in the optical stores. All contact lens brands at low prices, delivered at your home.

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High Sensitivity Optically Pumped Quantum Magnetometer

Quantum magnetometers based on optical pumping can achieve sensitivity as high as what SQUID-based devices can attain. In this paper, we discuss the principle of operation and the optimal design of an optically pumped quantum magnetometer.

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Lasers for Optical Pumping & EIT TOPTICA Photonics AG

Using of Optical pumping Optical pumping is widely used to prepare atoms, ions or molecules in a selected quantum mechanical state. This can be either a specific electronic state (like in a gas or solid state laser itself) or a magnetic state.

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Hongkun Nie IEEE Xplore Author Details

He received the B.S. degree in optical information science and technology from the School of college of science, QiLu University of technology, Jinan, China, in 2015. He is currently working toward the Ph.D. degree in materials physics and chemistry in the Institute of

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OPTICAL PUMPING OF RUBIDIUM VAPOR Introduction A

Optical Pumping 1 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 light to pump a particular level in rubidium vapor.

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Chamithri Adikarige Graduate Student Rochester

About. Experienced Research Associate specializing in Spin Exchange Optical Pumping (SEOP) and fundamental quantum mechanics research with a strong background in laser and optics.

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Laser pumping Wikipedia

Laser pumping is the act of energy transfer from an external source into the gain medium of a laser. The energy is absorbed in the medium, producing excited states in its atoms. When the number of particles in one excited state exceeds the number of particles in the ground state or a less-excited state, population inversion is achieved.

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Tunable lasers at 1080 nm for helium optical pumping

We describe the current status of tunable, cw, solid-state lasers in the infrared region of the spectrum which may be tuned to the helium resonance transition near 1083 nm. The principal use for these laser devices is the optical pumping of {sup 3}He and {sup 4}He atoms via the 2{sup 3}{ital S}{sub

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Optical spin pumping induced pseudo-magnetic field in two

Optical spin pumping induced pseudo-magnetic field in two dimensional heterostructures Chongyun Jiang 1†, Abdullah Rasmita,Weigao Xu1, Atac Imamoğlu2, Qihua Xiong1,3,4*, Wei-bo Gao1,4,5* 1Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.

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Virginia Eye Institute Bringing Your World into Focus

Virginia Eye Institute (VEI) is a comprehensive eye care organization providing a wide range of ophthalmology, optometry, and optical services in 8 locations across central Virginia. VEI offers exceptional ophthalmologic care—including cataract,cornea,glaucoma,retina,ocular plastics,pediatrics,and refractive surgery (LASIK) .

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Optical Training

Get all the must-have materials and practice quizzes you need to successfully pass the American Board of Opticianry and National Contact Lens Examiners tests.

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M.I.T. Junior Lab 8.13/ 8.14 Massachusetts Institute of

11. Optical Pumping of Rubidium Vapor. Measurement of the Zeeman splittings of the ground state of the natural rubidium isotopes; measurement of the relaxation time of the magnetization of rubidium vapor; and measurement of the local geomagnetic field by the rubidium magnetometer.

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OPTICAL PUMPING NIST

Spin Exchange Optical Pumping (SEOP) Schematic by Earl D. Babcock The final step is the polarization of the 3 He nucleus by both K and Rb through hyperfine interaction. Though, both Rb and K atoms collide with the 3 He atoms, the spin-exchange process is more efficient for K-3 He collision than for Rb-3 He collisions (schematic above). For the spin-exchange to occur, unpaired valence electrons

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OPTICAL PUMPING OF RUBIDIUM Department of Physics

Optical pumping is the basis of all lasers; it is an important tool for studying collision and : y exchange relaxation processes, and also finds applicability in both solid state and liquid state physics.

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Spin-exchange optical pumping using a frequency

Spin-exchange optical pumping using a frequency-narrowed high power diode laser I. A. Nelson, B. Chann, and T. G. Walkera) Department of Physics, University of

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OPTICAL PUMPING NIST

Spin Exchange Optical Pumping (SEOP) Schematic by Earl D. Babcock The final step is the polarization of the 3 He nucleus by both K and Rb through hyperfine interaction. Though, both Rb and K atoms collide with the 3 He atoms, the spin-exchange process is more efficient for K-3 He collision than for Rb-3 He collisions (schematic above). For the spin-exchange to occur, unpaired valence electrons

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OPTICAL PUMPING OF RUBIDIUM Department of Physics

Optical pumping is the basis of all lasers; it is an important tool for studying collision and : y exchange relaxation processes, and also finds applicability in both solid state and liquid state physics.

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Spin-exchange optical pumping using a frequency

Spin-exchange optical pumping using a frequency-narrowed high power diode laser I. A. Nelson, B. Chann, and T. G. Walkera) Department of Physics, University of

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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-

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Optical Pumping of Molecules* Stanford University

Optical Pumping of Molecules* R. E. DRULLINGERt AND R. N. 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

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OPTICAL PUMPING

OPTICAL PUMPING In this new technique of experimental physics light is used to “pump” electrons to higher energy-levels. The method is employed to study the interaction of atoms and radio waves by Arnold L. Bloom T he rather odd term optical pump-ing means just varies directly- with their frequency, or what it says. In

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The polarization and the fundamental sensitivity of 39K

Jul 28, 2017· The hybrid optical pumping spin exchange relaxation free (SERF) atomic magnetometers can realize ultrahigh sensitivity measurement of magnetic field and inertia. We have studied the 85Rb polarization of two types of hybrid optical pumping SERF magnetometers based on 39K-85Rb-4He and 133Cs-85Rb-4He respectively.

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M.I.T. Junior Lab 8.13/ 8.14 Massachusetts Institute of

11. Optical Pumping of Rubidium Vapor. Measurement of the Zeeman splittings of the ground state of the natural rubidium isotopes; measurement of the relaxation time of the magnetization of rubidium vapor; and measurement of the local geomagnetic field by the rubidium magnetometer.

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TEACH SPIN University of San Diego

Optical pumping is the basis of all lasers; it is an important tool for studying collision and exchange relaxation processes, and also finds applicability in both solid state and liquid state physics. A good article to start your reading might be Thomas Carver's review

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The Institute of Optics University of Rochester

The Institute is exploring methods of on-chip, integrated, continuous filtering in order to suppress filamentation in broad-area lasers in order to relieve the pumping limitations on high-power fiber lasers/amplifiers that BALs impose.

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New laser hits mark on cancer imaging to airport security

Nov 18, 2019· One way is to use light. In a process called optical pumping, light raises molecules from a lower energy level to a higher one—like a quantum elevator. Previous terahertz molecular lasers used optical pumps, but they were limited in their tunability to just a few frequencies, meaning the elevator only went to a small number of floors.

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Dynamic beam steering with all-dielectric electro-optic

Nanoscience Institute, California Institute of Technology, Pasadena, CA 91125, USA. Correspondence and requests for materials should be addressed Under optical pumping, the area for refractive-index modulation is determined by the size of focused laser spot, and is relatively large, limiting the possibility

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New laser hits mark on cancer imaging to airport security

Nov 15, 2019· One way is to use light. In a process called optical pumping, light raises molecules from a lower energy level to a higher one — like a quantum elevator. Previous terahertz molecular lasers used optical pumps, but they were limited in their tunability to just a few frequencies, meaning the elevator only went to a small number of floors.

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Optical pumping by a laser pulse traveling in a cavity

Optical pumping by a laser pulse traveling in a cavity Takuya Majima,1 Akira Terasaki,2 and Tamotsu Kondow2 1East Tokyo Laboratory, Genesis Research Institute, Inc., 717-86 Futamata, Ichikawa, Chiba 272-0001, Japan 2Cluster Research Laboratory, Toyota Technological Institute in East Tokyo Laboratory, Genesis Research Institute, Inc., 717-86 Futamata, Ichikawa, Chiba 272-0001, Japan

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OPTICAL PUMPING Semantic Scholar

Preface In recent years the words "optical pumping" have been used more and more often, generally in connection with the operation of lasers and masers. However, the concept of optical pumping and the techniques involved have a more general applicability and have been responsible for the success of a large number of fundamental and aesthetically beautiful experiments.

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Dynamically controlled Purcell enhancement of visible

ARTICLE Dynamically controlled Purcell enhancement of visible spontaneous emission in a gated plasmonic heterostructure Yu-Jung Lu1,2, Ruzan Sokhoyan 1, Wen-Hui Cheng 1, Ghazaleh Kafaie Shirmanesh1, Artur R. Davoyan1,3,4, Ragip A. Pala1, Krishnan Thyagarajan1 & Harry A. Atwater1,3 Emission control of colloidal quantum dots (QDs) is a cornerstone of modern high-quality

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Optically pumped rare-gas lasers

Optical pumping was performed using a tunable optical parametric oscillator with an emission line width of 30 GHz. The gain of the medium was measured using a pulsed tunable dye laser. The optical pumping and lasing (in air) wavelengths were,

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Anatoly Pazgalev PhD ResearchGate

Experiments aimed to determine the sensitivity and the optical shift of the output frequency of a magnetometer based on optical pumping of cesium atoms and intended for a neutron magnetic

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On the limits of spin-exchange optical pumping of 3He

On the limits of spin-exchange optical pumping of 3He W. C. Chen,1,2,a) T. R. Gentile,2 Q. Ye,1,2 T. G. Walker,3 and E. Babcock4 1University of Maryland, College Park, Maryland 20742, USA 2National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899, USA 3University of Wisconsin, Madison, Wisconsin 53706, USA 4Juelich Centre for Neutron Science at FRM 2

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[J. Res. Natl. Inst. Stand. Technol. 106 Compressing Spin

Volume 106, Number 4, July–August 2001 Journal of Research of the National Institute of Standards and Technology [J. Res. Natl. Inst. Stand. Technol. 106, 709–729 (2001)] Compressing Spin-Polarized 3He With a Modified Diaphragm Pump

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Pulsed Parametric Resonance Magnetometer

We turn now to the experimental demonstration of optical pumping with pulsed-field parametric modulation. We per-form D1 optical pumping of a 87-Rb cell containing 200 Torr of N 2 quenching gas, with the pumping laser propagation di-rection perpendicular to a DC magnetic field B 0 0) = = = =)

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Awarding Principal Investigator Institution State Brief

Cryogenic Magneto-Optical Spectrometer for New Quantum Defects AFOSR DeMarco, Brian University of Illinois IL Producing and Manipulating Ultracold Ground

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Gordon Gould Session I American Institute of Physics

Bromberg: This is April 8th and this is Mr. Gordon Gould I’m speaking with, and Ms. Marilyn Appel is also here. My name is Joan Bromberg. We’re going to talk about some of the oral history phase. So we want to talk about how it is that you came to be interested first in the optically pumped maser that you were telling me about that you invented.

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Recent News [GAP-Optique]

The strong enhancement of the coherent properties simultaneously for optical and microwave transitions had been observed for zero and low external magnetic fields, allowing future realisation of broadband quantum memories, microwave-optical transducers and an interface with superconducting qubits.

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Effect of periodic optical pumping on dynamics of passive

We investigate the influence of various parameters (including average pump power into the fiber laser, the modulation frequency and duty cycle of the pump, and the polarization state of the light inside the cavity) on the transient response characteristic of the MLFL such as: relaxation oscillation (RO) build-up time (defined as the time delay

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The Scientific World Journal Hindawi

The Scientific World Journal is a peer-reviewed, Open Access journal that publishes original research, reviews, and clinical studies covering a wide range of subjects in science, technology, and medicine. The journal is divided into 81 subject areas.

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US academic-military group creates tunable terahertz laser

Nov 20, 2019· The team says that their “breakthrough” was achieved by the use of a highly tunable, quantum-cascade laser (QCL) as the optical pump. These powerful, portable lasers, co-invented by Capasso and his group at Bell Labs in the 1990s, are capable of efficiently producing widely tunable light.

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AIR FORCE INSTITUTE OF TECHNOLOGY

Optical pump power is 1.34 W and curves represent measurements taken at 20.5 K, 22 K, 26 K, 40 K and 80 K.. 64 4.18. Higher energy sub-peak of main photoluminescence peak of SiOx-on-InSb. Optical pump power is 1.34 W and curves represent measurements taken at