Design of an optical reference cavity with low thermal noise limit and flexible thermal expansion properties

Zhang, Jie; Luo, Yingxin; Ouyang, Bing; Deng, Ke; Lu, Zehuang; Luo, Jun

doi:10.1140/epjd/e2013-30458-2

Cited by 24 publications

(18 citation statements)

References 36 publications

(41 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Among them, the influence of Brownian thermal noise is quite remarkable, and considerable effort has been invested in reducing it [15][16][17][18][19][20][21][22][23][24]. Y. Levin proposed an efficient way to calculate thermal noise based on the fluctuation-dissipation theorem (FDT) and some significant efforts have been expended to reduce it [15][16][17][18][19][20][21][22][23][24]. A set of equations was given by Numata et al [16] for estimating the noise contribution of a spacer, substrates, and coating of cylindrical cavities using this approach.…”

Section: Introductionmentioning

confidence: 99%

Thermal Noise in Cubic Optical Cavities

Jiao

Chen

et al. 2021

Photonics

View full text Add to dashboard Cite

Thermal noise in optical cavities sets a fundamental limit to the frequency instability of ultra-stable lasers. Numata et al. derived three equations based on strain energy and the fluctuation–dissipation theorem to estimate the thermal noise contributions of the spacer, substrates, and coating. These equations work well for cylindrical cavities. Extending from that, an expression for the thermal noise for a cubic spacer based on the fluctuation–dissipation theorem is derived, and the thermal noise in cubic optical cavities is investigated in detail by theoretical analysis and finite element simulation. The result shows that the thermal noise of the analytic estimate fits well with that of finite element analysis. Meanwhile, the influence of the compressive force Fp on the thermal noise in cubic optical cavities is analyzed for the first time. For a 50 mm long ultra-low expansion cubic cavity with fused silica substrates and GaAs/AlGaAs crystalline coating, the displacement noise contributed from every Fp of 100 N is about three times more than that of the substrate and coating.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermal Noise in Cubic Optical Cavities

Jiao

Chen

et al. 2021

Photonics

View full text Add to dashboard Cite

show abstract

“…This apparent expansion may be related to our mirrors being glued rather than optically contacted; this is an important difference between this design and those presented elsewhere [5][6][7][8]27]. A possible mechanism for this slow expansion could be that the glue crept between the spacer and the mirrors, and is still curing, resulting in the length changes we appear to be seeing.…”

Section: B the Cavity Driftmentioning

confidence: 79%

Medium-finesse optical cavity for the stabilization of Rydberg lasers

Hond¹,

Cisternas²,

Lochead³

et al. 2017

Appl. Opt.

View full text Add to dashboard Cite

We describe the design, construction, and characterization of a medium-finesse Fabry-Pérot cavity for simultaneous frequency stabilization of two lasers operating at 960 and 780 nm wavelengths, respectively. The lasers are applied in experiments with ultracold rubidium Rydberg atoms, for which a combined laser linewidth similar to the natural Rydberg linewidth (≈ 10 kHz) is desired. The cavity, with a finesse of ≈ 1500, is used to reduce the linewidth of the lasers to below this level. By using a spacer made of ultra low expansion (ULE ® ) glass with active temperature stabilization, the residual frequency drift is limited to 1 MHz/day. The design optimizes for ease of construction, robustness, and affordability.

show abstract

“…Only odd resonances are excited due to the symmetry of the length change. At resonance (ω m ¼ ω 1 ), α ≃ 0 and β ¼ 8Q 1 =π 2 , with the quality factor of our ultra low expansion cavity Q 1 ¼ 6.1 × 10 4[28,30,31] which significantly enhances the signal searched for. Below resonance (ω m ≪ ω 1 ) both β, α ≃ 0.…”

mentioning

confidence: 77%

Searching for Dark Matter with an Optical Cavity and an Unequal-Delay Interferometer

et al. 2021

View full text Add to dashboard Cite

We propose a new type of experiment that compares the frequency of a clock (an ultrastable optical cavity in this case) at time t to its own frequency some time t-T earlier, by "storing" the output signal (photons) in a fiber delay line. In ultralight oscillating dark matter (DM) models, such an experiment is sensitive to coupling of DM to the standard model fields, through oscillations of the cavity and fiber lengths and of the fiber refractive index. Additionally, the sensitivity is significantly enhanced around the mechanical resonances of the cavity. We present experimental results of such an experiment and report no evidence of DM for masses in the [4.1 × 10 −11 , 8.3 × 10 −10 ] eV region. In addition, we improve constraints on the involved coupling constants by one order of magnitude in a standard galactic DM model, at the mass corresponding to the resonant frequency of our cavity. Furthermore, in the model of relaxion DM, we improve on existing constraints over the whole DM mass range by about one order of magnitude, and up to 6 orders of magnitude at resonance.

show abstract

Design of an optical reference cavity with low thermal noise limit and flexible thermal expansion properties

Cited by 24 publications

References 36 publications

Thermal Noise in Cubic Optical Cavities

Thermal Noise in Cubic Optical Cavities

Medium-finesse optical cavity for the stabilization of Rydberg lasers

Searching for Dark Matter with an Optical Cavity and an Unequal-Delay Interferometer

Contact Info

Product

Resources

About