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Optical pumping of Rubidium - High Energy Physics

Optical pumping of Rubidium Dr. Johannes Recht and Dr. Werner Kiein Optical pumping is a process used in high frequency spectroscopy which was developed by A. Kastler. It allows the spectroscopy of atomic energy states in an energy region which is not accessible by means of direct, optical observation. Kastler was awarded the Nobel Prize

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

Optical pumping magnetic resonance in Cs atoms for use in ...

Abstract Magnetic resonance experiments were conducted on optically pumped Cs to investigate the use of atomic magnetic resonance in Cs atoms for precision magnetometry. The resonance frequencies agreed within 4 ppm with the theoretically calculated ones.

Richmond Eye Associates | ia Ophthalmologists

All Richmond Eye Associates office locations and Richmond Eye Optical shops will be closed on Thursday July 4, 2019 (Independence Day). Call 804-270-0330 to speak to the doctor on-call if you are experiencing an emergency during this time.... read more - LASIK Suite at Richmond Eye Associates

Shot-noise-limited detection of absorbance changes …

Shot-noise-limited detection of absorbance changes induced by subpicojoule laser pulses in optical pump-probe experiments Sergei Savikhin Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, Ames, Iowa 50011 (Received 27 April 1995; accepted for publication 26 May 1995)

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-

High Sensitivity Optically Pumped Quantum Magnetometer

Abstract. 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.

Optical pumping of metastable magnesium in an atomic beam

Abstract A selective depopulation of the metastable Mg 3 P 1 level is obtained in an atomic beam by optical pumping with the 3 P 1 - 3 D multiplet transition at 383.2 nm. The advantage of such a pumping for the Mg frequency standard at 601 GHz is discussed. This pumping scheme results more effective than the alternative one, which makes use of the 517 nm 3 P 1 - 3 S 1 transition.

Holmium-doped solid state optically pumped laser ...

May 24, 1994· Holmium-doped solid state optically pumped laser ... Optical pumping is performed by high-power diode lasers emitting at about 1.91 microns consisting of a GaInAsSb/AlGaAsSb quantum-well active region and AlGaAsSb cladding layers grown on GaSb substrates. ... Massachusetts Institute of Technology (Cambridge, MA) Primary Class: 372/41.

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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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.

Optically pumped rare-gas lasers - IOPscience

Optical pumping was performed using a tunable optical parametric oscillator with an emission line width of . The gain of the medium was measured using a pulsed tunable dye laser. The optical pumping and lasing (in air) wavelengths were, respectively, 640.2 and for Ne, 811.5 and for Ar, and 881.9 and for Xe.

Quantum-critical conductivity of the Dirac fluid in ...

Apr 12, 2019· Electrons can move through graphene in a manner reminiscent of fluids, if the conditions are right. Two groups studied the nature of this hydrodynamic flow in different regimes (see the Perspective by Lucas). Gallagher et al. measured optical conductivity using a waveguide-based setup, revealing signatures of quantum criticality near the charge neutrality point.

THz-pump/THz-probe spectroscopy of semiconductors at high ...

Pumping n-type GaAs and InSb with ultrafast THz pulses having intensities higher than 150 MW/cm2 shows strong free-carrier absorption saturation at temperatures of 300 K and 200 K, respectively. If the energy imparted to the carriers exceeds the bandgap, impact ionization processes can occur. The dynamics of carrier cooling in GaAs and impact ionization in InSb were monitored using THz-pump ...

Fan Yang's Group

Fan Yang's group at Stevens Institute and Technology. Fan Yang (Principle Investigator). Dr. Fan Yang is an assistant professor in the Department of Mechanical Engineering at Stevens Institute …

Sisyphus cooling of a bound atom - NIST

Sisyphus cooling of a bound atom D. J. Wineland Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80303 J. Dalibard and C. Cohen-Tannoudji Laboratoire de Spectroscopie Hertzienne de l'Ecole Normale Suphrieure, ... Through optical pumping, the

OSA | AlGaN photonics: recent advances in materials and ...

AlGaN-based materials own direct transition energy bands and wide bandgap and thus can be used in high-efficiency ultraviolet (UV) emitters and detectors. Over the past two decades, AlGaN-based materials and devices experienced rapid development. Deep ultraviolet AlGaN-based light-emitting diodes (LEDs) with improved efficiency of 20.3% (at 275 nm) have been produced.

The Institute of Optics - hajim.rochester.edu

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.

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 ...

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.

AIR FORCE INSTITUTE OF TECHNOLOGY - apps.dtic.mil

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

The Institute of Optics - University of Rochester

Topics covered include quantum mechanical treatments to two-level atomic systems, optical gain, homogenous and inhomogenous broadening, laser resonators and their modes, Gaussian beams, cavity design, pumping schemes, rate equations, Q switching, …

Heping Zeng - IEEE Xplore Author Details

Heping Zeng received the B.S. degree in physics from Peking University, Beijing, China, in 1990, and the Ph.D. degree from the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China, in 1995. In 2000, he joined the East China Normal University, Shanghai, China, as a Cheung-Kung Professor.

Excitation cross section of erbium in semiconductor ...

Excitation cross section of erbium in semiconductor matrices under optical pumping O. B. Gusev, M. S. Bresler, P. E. Pak, and I. N. Yassievich A.F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021 St.Petersburg, Russia M. Forcales, N. Q. Vinh, and T. Gregorkiewicz ... mechanisms under optical pumping in crystalline and amor ...

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 ...

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 …

Short Pump Office - ia 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. ... ia Eye Institute complies with applicable Federal civil rights laws and does not discriminate on the basis of race, color, national origin, age ...

IAEYEINSTITUTE.COM

Welcome to VEI: ia Eye Institute (VEI)is a comprehensive eye care organization providing a wide range of ophthalmology, optometry, and optical services in 8 locationsacross Central ia. VEI offers an exceptional range of ophthalmologic care to Richmond, VA residents including retina, oculoplastics, pediatrics, refractive surgery (LASIK), and general ophthalmology.

Dynamically induced robust phonon transport and chiral ...

Dynamically induced robust phonon transport and chiral cooling in an optomechanical system Seunghwi Kim1, Xunnong Xu2, ... Urbana, Illinois 61801, USA 2 Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, USA ... shown that asymmetric optical pumping of one pseudo-spin direction in WGRs explicitly