A space-based optical Kennedy-Thorndike experiment testing special relativity

Milke, Alexander; Aguilera, Deborah N.; Gürlebeck, Norman; Schuldt, Thilo; Herrmann, Sven; Döringshoff, Klaus; Spannagel, Ruven; Lämmerzahl, Cláus; Peters, A.; Biering, B.; Dittus, Hansjörg; Braxmaier, Claus

doi:10.1109/eftf-ifc.2013.6702260

Cited by 6 publications

(4 citation statements)

References 11 publications

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“…It is currently considered by the DLR in the scope of the national large mission program. It is based on previous studies of the satellite mission proposals STAR, BOOST, and mSTAR, see [24][25][26][27], respectively. The tentative schedule foresees a launch in 2025.…”

Section: Mission Overviewmentioning

confidence: 99%

BOOST: A satellite mission to test Lorentz invariance using high-performance optical frequency references

et al. 2018

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BOOST (BOOst Symmetry Test) is a proposed satellite mission to search for violations of Lorentz invariance by comparing two optical frequency references. One is based on a long-term stable optical resonator and the other on a hyperfine transition in molecular iodine. This mission will allow to determine several parameters of the standard model extension in the electron sector up to two orders of magnitude better than with the current best experiments. Here, we will give an overview of the mission, the science case and the payload.

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Section: Mission Overviewmentioning

confidence: 99%

BOOST: A satellite mission to test Lorentz invariance using high-performance optical frequency references

et al. 2018

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“…Highstability frequency references are also key elements for tests of fundamental physics such as detection of violations of Lorentz invariance [13][14][15] through Michelson-Morley (MM) [16,17] and Kennedy-Thorndike (KT) [18,19] experiments. Satellite missions STAR, mSTAR and BOOST [20][21][22][23] have been proposed for such purposes. BOOST consists of comparing two highly stable frequency references based on completely different mechanisms, i.e., an optical resonator and a hyperfine transition of molecular iodine [24,25] in a low-Earth orbit.…”

Section: Introductionmentioning

confidence: 99%

Long-term stable optical cavity for special relativity tests in space

et al. 2019

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BOOST (BOOst Symmetry Test) is a proposed space mission to search for Lorentz invariance violations and aims to improve the Kennedy-Thorndike parameter constraint by two orders of magnitude. The mission consists of comparing two optical frequency references of different nature, an optical cavity and a hyperfine transition in molecular iodine, in a low Earth orbit. Naturally, the stability of the frequency references at the orbit period of 5400 s (f =0.18 mHz) is essential for the mission success. Here we present our experimental efforts to achieve the required fractional frequency stability of 7.4 × 10 −14 Hz −1/2 at 0.18 mHz (in units of the square root of the power spectral density), using a high-finesse optical cavity. We have demonstrated a frequency stability of (9 ± 3) × 10 −14 Hz −1/2 at 0.18 mHz, which corresponds to an Allan deviation of 10 −14 at 5400 s. A thorough noise source breakdown is presented, which allows us to identify the critical aspects to consider for a future space-qualified optical cavity for BOOST. The major noise contributor at sub-milli-Hertz frequency was related to intensity fluctuations, followed by thermal noise and beam pointing. Other noise sources had a negligible effect on the frequency stability, including temperature fluctuations, which were strongly attenuated by a five-layer thermal shield.

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“…One of the key applications of this method is the design of thermal isolations for optical resonators (ORs), which are used as frequency references in highly sensitive interferometers, in experiments testing fundamental physics, and as optical frequency standards, see e.g. [1][2][3][4][5], [6][7][8][9][10][11][12][13][14], and [15][16][17][18], respectively. ORs consist of a spacer and two high-reflectivity mirrors.…”

Section: Introductionmentioning

confidence: 99%

“…This low frequency range is crucial in different missions and experiments since the expected science signals are in the same frequency band. This is especially important for the space-based gravitational wave detector eLISA [1] and foreseen missions testing the fundamental principles of general relativity such as the Lorentz Invariance with Michelson-Morley experiments and a Kennedy-Thorndike experiment like STAR (SpaceTime Asymmetry Research [11]), mini-STAR, and BOOST (BOOst Symmetry Test [12]), for earlier Kennedy-Thorndike experiments see, e.g., [6,7].…”

Section: Introductionmentioning

confidence: 99%

Mathematical model of thermal shields for long-term stability optical resonators

Sanjuan,

Gürlebeck,

Braxmaier

2015

Preprint

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Modern experiments aiming at tests of fundamental physics, like measuring gravitational waves or testing Lorentz Invariance with unprecedented accuracy, require thermal environments that are highly stable over long times. To achieve such a stability, the experiment including typically an optical resonator is nested in a thermal enclosure, which passively attenuates external temperature fluctuations to acceptable levels. These thermal shields are usually designed using tedious numerical simulations or with simple analytical models. In this paper, we propose an accurate analytical method to estimate the performance of passive thermal shields in the frequency domain, which allows for fast evaluation and optimization. The model analysis has also unveil interesting properties of the shields, such as dips in the transfer function for some frequencies under certain combinations of materials and geometries. We validate the results by comparing them to numerical simulations performed with commercial software based on finite element methods.

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A space-based optical Kennedy-Thorndike experiment testing special relativity

Cited by 6 publications

References 11 publications

BOOST: A satellite mission to test Lorentz invariance using high-performance optical frequency references

BOOST: A satellite mission to test Lorentz invariance using high-performance optical frequency references

Long-term stable optical cavity for special relativity tests in space

Mathematical model of thermal shields for long-term stability optical resonators

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