نتایج جستجو برای: optically pumped magnetometer

تعداد نتایج: 27711  

2001
J. M. Léger

1Laboratoire d’Electronique et de Technique d’Instrumentation, Commissariat à l’énergie atomique, referred to later on as CEA/LETI Grenoble 17 rue des martyrs 38054 Grenoble cedex 9, France 2International Institute of Earthquake Prediction Theory and Mathematical Geophysics 79, b2, Warshavskoe shosse 113556 Moscow, Russia 3Institut de Physique du Globe de Paris, 4, Place Jussieu, 75252, Paris, ...

2007
Frank Demaria Michael Riedl

We report on high-power operation of an optically pumped external-cavity semiconductor disk laser. 13.2W optical output power at 970 nm has been achieved in a double-pass pump configuration. The laser Bragg mirror was designed to provide not only high reflectivity for the laser wavelenth but also for the pumping beam. A proper layer structure which supports standing-wave patterns with a node ne...

2016
Kyungmok Kwon Jong-bum You Jaeho Shim Youngho Jung Kyoungsik Yu

We discuss subwavelength-scale semiconductor metal-optic resonators placed on the metal substrate with various top metal plate sizes. Albeit with large optical losses, addition of metal layers converts a leaky semiconductor nano-block into a highly-confined optical cavity. Optically pumped lasing action is observed with the extended top metal layer that can significantly suppress the radiation ...

2016
E. De Clercq M. De Labachellerie G. Avila P. Cerez M. Tetu

2014 This paper presents a theoretical analysis of a possible scheme to realize a strong population difference between the two ground state sub-levels F = 4, MF = 0, and F = 3, MF = 0 of caesium atom. Two laser-diode light beams, 03C0 polarized, are used to illuminate at right angle an atomic beam. The efficiency of the population difference build up is evaluated for two limiting cases accordin...

2002
Robert E. Drullinger David J. Glaze J. L. Lowe Jon H. Shirley

The National Institute of Standards and Technology is developing an optically pumped, cesium-beam primary frequency standard. The design follows from an analysis of systematic errors found in cesium beam standards. The details of the design, performance of major subsystems, and preliminary tests of the standard are presented.

Journal: :Biomedical Engineering / Biomedizinische Technik 2013

Journal: :Applied Physics Letters 2022

We report the design and performance of a nonmagnetic drift stable optically pumped cesium magnetometer with measured sensitivity 35 fT at 200 s integration time stability below 50 between 70 600 s. The sensor is based on nonlinear magneto-optical rotation effect: in Bell–Bloom configuration, higher order polarization moment (alignment) Cs atoms created pump laser beam an anti-relaxation coated...

Journal: :Optics express 2015
W T Rawlins K L Galbally-Kinney S J Davis A R Hoskinson J A Hopwood M C Heaven

The optically pumped rare-gas metastable laser is a chemically inert analogue to three-state optically pumped alkali laser systems. The concept requires efficient generation of electronically excited metastable atoms in a continuous-wave (CW) electric discharge in flowing gas mixtures near atmospheric pressure. We have observed CW optical gain and laser oscillation at 912.3 nm using a linear mi...

Journal: :Optics express 2012
Kevin Schires Rihab Al Seyab Antonio Hurtado Ville-Markus Korpijärvi Mircea Guina Ian D Henning Michael J Adams

We report the first room temperature optical spin-injection of a dilute nitride 1300 nm vertical-cavity surface-emitting laser (VCSEL) under continuous-wave optical pumping. We also present a novel experimental protocol for the investigation of optical spin-injection with a fiber setup. The experimental results indicate that the VCSEL polarization can be controlled by the pump polarization, and...

2016
A. Cassimi B. Cheron J. Hamel

4He (2 3Si) metastable atoms are optically pumped with intensity modulated light The use of a single mode diode-pumped LNA laser as the pumping source, allows the study of resonance signals predicted'by the optical pumping theory but not yet observed Resonances are detected on the transmitted pumping beam at the modulation frequency and its harmonics Application of this method to high sensitivi...

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