The effect of laser source and PBS on the nonlinearity in heterodyne interferometer

Ju, Aisong; Zhong, Chaoyang; Hou, Wenmei

doi:10.1016/j.ijleo.2014.08.135

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…• Elliptical polarization of the laser beam 81,82 • Misalignment between the laser beam and the beam splitter polarization axis 83,84 • Imperfections in alignment or quality of optical components 83,84 • Non-orthogonality of the laser polarizations 83,85,86 • Imperfect photodiode (responsivity, gain, etc.) 87 This non-exhaustive list shows the complexity of the non-linear origins 84 .…”

Section: Linearity Of Phasemetersmentioning

confidence: 99%

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Contributed Review: A review of compact interferometers

Watchi

Cooper

Ding

et al. 2018

Review of Scientific Instruments

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Compact interferometers, called phasemeters, make it possible to operate over a large range while ensuring a high resolution. Such performance is required for the stabilization of large instruments dedicated to experimental physics such as gravitational wave detectors. This paper aims at presenting the working principle of the different types of phasemeters developed in the literature. These devices can be classified into two categories: homodyne and heterodyne interferometers. Improvement of resolution and accuracy has been studied for both devices. Resolution is related to the noise sources that are added to the signal. Accuracy corresponds to distortion of the phase measured with respect to the real phase, called non-linearity. The solutions proposed to improve the device resolution and accuracy are discussed based on a comparison of the reached resolutions and of the residual non-linearities.

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Section: Linearity Of Phasemetersmentioning

confidence: 99%

“…Several papers were agreeing that the primary origin of noise comes from the non-orthogonality of the two linear polarizations measured 83,85,86 . The use of an adjustable λ/2 wave plate can correct this issue.…”

Section: Performance Of the Different Interferometersmentioning

confidence: 99%

Contributed Review: A review of compact interferometers

Watchi

Cooper

Ding

et al. 2018

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

“…Studying the noise in each part of the interferometer and eliminating it through data post-processing can greatly improve the measurement accuracy of the interferometer. Laser frequency noise [15,16], laser Relative Intensity Noise (RIN) [17,18], temperature fluctuations [16,19], electronic readout noise [19], optical components [15], geometric TTL noise [20], etc., have an impact on the measurement accuracy of the interferometer. Here, laser frequency noise is reflected in the optical path through the differential of the interferometer arms.…”

Section: Introductionmentioning

confidence: 99%

Measurement of the Optical Path Difference Caused by Steering Mirror Using an Equal-Arm Heterodyne Interferometer

Zhu,

Guo,

Jin

et al. 2023

Photonics

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In space gravitational wave detection, the inter-satellite link-building process requires a type of steering mirror to achieve point-ahead angle pointing. To verify that the background noise does not drown out the gravitational wave signal, this paper designed a laser heterodyne interferometer specifically designed to measure the optical path difference of the steering mirror. Theoretically, the impact of angle and position jitter is analyzed, which is called tilt-to-length (TTL) coupling. This interferometer is based on the design concept of equal-arm length. In a vacuum (10−3 Pa), vibration isolation (up to 1 Hz), and temperature-controlled (approximately 10 mK) experimental environment, the accuracy is increased by about four orders of magnitude through a common-mode suppression approach and can reach 390 pm/Hz when the frequency is between 1 mHz and 1 HZ. By analogy, the optical path difference caused by the steering mirror reaches 5 pm/Hz in the 1 mHz to 1 Hz frequency band. The proposed TTL noise model is subsequently verified.

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The relation between non-orthogonal laser beam and nonlinearity in heterodyne interferometer with different number of optical subdivision

Wu¹,

Hu²,

Rao³

et al. 2018

AIP Conference Proceedings

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Improved dispersion relations for GaAs and applications to nonlinear opticswusishan@jxnu.edu.cnAbstract. The non-orthogonality and ellipticity of laser source is the main error source of nonlinearity in the heterodyne interferometer. The aim of this study is to use mathematical analysis on the relations between the nonlinear error in heterodyne interferometer with non-orthogonal laser beam and optical subdivisions. The simulations show that the nonlinearity errors from the non-orthogonal laser beam are related with the optical subdivisions, and the nonlinearity of heterodyne interferometer grows up when the subdivision number increases.

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The effect of laser source and PBS on the nonlinearity in heterodyne interferometer

Cited by 7 publications

References 9 publications

Contributed Review: A review of compact interferometers

Contributed Review: A review of compact interferometers

Measurement of the Optical Path Difference Caused by Steering Mirror Using an Equal-Arm Heterodyne Interferometer

The relation between non-orthogonal laser beam and nonlinearity in heterodyne interferometer with different number of optical subdivision

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