A compact laser system for the cold atom gravimeter

Wang, Qiyu; Wang, Zhaoying; Fu, Zhijie; Liu, Weiyong; Lin, Qiang

doi:10.1016/j.optcom.2015.09.001

Cited by 39 publications

(26 citation statements)

References 20 publications

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“…Quantum technology (QT) is driving a renewed focus on nonlinear optical materials principally for converting the operating wavelength of established narrow linewidth lasers to an atomic cooling transition, and for generating entangled photon pair states. Waveguides in nonlinear materials, with their increased optical efficiencies at lower pump powers and small device footprint, have become an active area of research [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…Nonlinear waveguide have been used to enable more efficient conversion of laser pump sources, with some commercial availability for <250 mW operation. With their high χ (2) nonlinearities and wide transparency window, PPLN waveguides have been used for nonlinear interactions in telecommunications [8,9], quantum communications [10,11], single photon sources [11][12][13][14], all-fiber/waveguide squeezing [15], and atom/ion trapping [4,[16][17][18]. In particular, the frequency doubling of 1560 nm sources is frequently chosen for Rb atom traps, which is the interest of our work.…”

Section: Introductionmentioning

confidence: 99%

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Zn-indiffused diced ridge waveguides in MgO:PPLN generating 1 watt 780 nm SHG at 70% efficiency

Berry¹,

Carpenter²,

Gray³

et al. 2019

OSA Continuum

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We present a metallic zinc indiffused diced ridge waveguide in magnesium doped periodically poled lithium niobate (MgO:PPLN) capable of generating over 1 W of 780 nm with 70% efficiency. Our 40 mm long waveguide has near circular fundamental mode output with diameter 10.4 µm and insertion loss of -1.17 dB. Using a commercial 2 W EDFA-based system, the SHG output power did not exhibit roll-off at maximum available pump power.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Zn-indiffused diced ridge waveguides in MgO:PPLN generating 1 watt 780 nm SHG at 70% efficiency

Berry¹,

Carpenter²,

Gray³

et al. 2019

OSA Continuum

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“…The schemes developed in these experiments form a core technology under the auspice of emerging quantum technologies, as a new type of deployable sensor -atom interferometry is being applied to inertial navigation 52-54 , space and satellite missions 55-58 , mineral prospecting 59, 60 , and civil engineering 61 . These applications require, and have led to, the development of reliable, stable, mobile, and compact laser systems to control, manipulate, and measure the atomic samples under varying environmental conditions; these devices have increasingly relied upon frequency doubling of stable C-band telecommunications lasers and the related developments to make such lasers rugged and reliable [62][63][64][65][66][67][68][69][70][71] .Muquans 72 , the first company to bring to market a completely fibered laser apparatus dedicated to cold atom production and atom interferometry 73 , has been selected as the commercial entity to realize the automated fiber laser systems for the MIGA antenna. In this report, we present the first realization and characterization of such a system, designed for the MIGA project.…”

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confidence: 99%

A fibered laser system for the MIGA large scale atom interferometer

Sabulsky

Junca

Lefevre

et al. 2020

Sci Rep

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We describe the realization and characterization of a compact, autonomous fiber laser system that produces the optical frequencies required for laser cooling, trapping, manipulation, and detection of 87 Rb atoms -a typical atomic species for emerging quantum technologies. This device, a customized laser system from the Muquans company, is designed for use in the challenging operating environment of the Laboratoire Souterrain à Bas Bruit (LSBB) in France, where a new large scale atom interferometer is being constructed underground -the MIGA antenna. The mobile bench comprises four frequency-agile C-band Telecom diode lasers that are frequency doubled to 780 nm after passing through high-power fiber amplifiers. The first laser is frequency stabilized on a saturated absorption signal via lock-in amplification, which serves as an optical frequency reference for the other three lasers via optical phase-locked loops. Power and polarization stability are maintained through a series of custom, flexible micro-optic splitter/combiners that contain polarization optics, acousto-optic modulators, and shutters. Here, we show how the laser system is designed, showcasing qualities such as reliability, stability, remote control, and flexibility, while maintaining the qualities of laboratory equipment. We characterize the laser system by measuring the power, polarization, and frequency stability. We conclude with a demonstration using a cold atom source from the MIGA project and show that this laser system fulfills all requirements for the realization of the antenna. This laser system system, based on reliable telecommunications technology, has applications toward mobile, field deployable quantum technologies.Pioneering experiments in matter-wave interferometry 5-7 demonstrating inertial sensitivity led to significant interest for precision measurements using atomic beamlines. Development of laser-cooling schemes 8-11 during the last thirty years have produced a series of methods to produce small 3D kinetic temperatures in dilute atomic gases. This led to atom interferometry with cold atoms, which has a track record of accuracy and precision spanning the development of laser cooling. This technique has been used to measure gravity 12-17 , gravity gradients 18,19 , rotations 20-24 , measurements of the gravitational constant G 25, 26 , determination of the fine structure constant coupled with tests of quantum electrodynamics 27, 28 , studies of the interface between gravity and quantum mechanics 29, 30 , General Relativity (GR) tests such as the searches for violations of the Weak Equivalence Principle 31-37 , tests of local Lorentz invariance of post-Newtonian gravity 38 , experiments in microgravity 39-41 , tests of dark energy 42,43 , and recoil associated with blackbody radiation 44 . Based on this record of precision measurements, cold atom interferometry gained traction as a candidate system for observing Gravitational Waves (GWs) at low frequency [45][46][47][48][49][50][51] . The schemes developed in these experiments form ...

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“…两个波包的中心位置也存在差异, 其大小为 [8] . 浙江大学小组利用1560 nm的DFB激光通过倍频晶体倍频得到780 nm的激光 [59] . 在实验中, 浙江大学 [60] 以及主动隔振 [17,[61][62][63] 的方法.…”

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