Optimization of displacement-measuring quadrature interferometers considering the real properties of optical components

Požar, Tomaž; Gregorčič, Peter; Možina, Janez

doi:10.1364/ao.50.001210

Cited by 14 publications

(4 citation statements)

References 14 publications

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“…optical resonator (X-axis). The scale of the homodyne Michelson interferometer was not compensated by the method [6]. The bottom record shows the difference between these both measuring systems.…”

Section: Measured Records and Resultsmentioning

confidence: 99%

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High-resolution detection of small distance changes by an optical frequency comb

et al. 2012

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The work presents a measurement of lengths by an optical measuring resonator. The resonator works as distance-tooptical frequency converter with ultimate linearity. It has locked a tunable laser to certain cavity mode. The optical frequency of the laser is heterodyned with immediate "tooth" of the femtosecond comb spectrum. For the testing of the method the special combination of the optical resonator and Michelson interferometer was put together. This system combines the cavity length of the optical resonator with the measuring arm of the Michelson laser interferometer. The one mirror of the system is common for both laser interferometers and it is driven by piezoelectric transducer. The testing range is limited by the range of tuneability of the used laser and it covers 1000 nm of the length measurement.

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Section: Measured Records and Resultsmentioning

confidence: 99%

“…Research teams in the world works on various measuring methods based on a laser interferometry [6]. But the most precise systems use an optical resonator as a measuring device.…”

Section: Introductionmentioning

confidence: 99%

High-resolution detection of small distance changes by an optical frequency comb

et al. 2012

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“…Ideally, the interferometer has to be aligned so that the signals x and y are in quadrature. This means that 90 deg phase difference, between the signals, needs to be achieved with proper optical alignment and choice of optical components [17]. If in addition to the quadrature of optical phases between the photodiode signals (p 0 0), ac amplitudes are made equal (A x A y ), then the sensitivity is constant, i.e., independent of the optical phase δ 4πu∕λ and consequently independent on displacement difference u.…”

Section: Principle Of Operationmentioning

confidence: 99%

Dual-probe homodyne quadrature laser interferometer

Požar

Možina

2012

Appl. Opt.

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We present a dual-probe homodyne quadrature laser interferometer for the measurements of displacement at two separate spatial locations. This is a coupled homodyne interferometer with inverted polarity of probe signals featuring a wide dynamic range and constant sensitivity. As an application of this dual-probe interferometer, we demonstrate how to locate the pulsed-laser interaction site on a plate without knowing the propagation velocities of the laser-induced mechanical waves.

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“…One solution for this is an interferometer with in-phase and quadrature-phase out-puts, whereby we can obtain a signal in proportion to the displacement. [5][6][7][8] Such interferometers have many advantages, but their optical and electrical circuit arrangements should be carefully adjusted, 9) which is generally complex. In contrast, the single-output homodyne interferometer has a simple structure, although its nonlinear output usually requires control of the OPD.…”

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confidence: 99%

Interferometric dynamic displacement measurement using phase-modulated light along with stepwise control of operation point

Tanaka

Ueda

2018

Appl. Phys. Express

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We propose the fiber-based interferometric measurement of tens-of-nanometer-scale dynamic displacement that uses phase-modulated reference light with stepwise control of the operation point of modulation (OPM). It requires neither the pre-adjustment of the OPM nor feedback control for the path-length difference of the interferometer. Quantitative evaluation of the system is performed by using a phase modulator as a sample to simulate mechanical vibration. The dynamic displacement for 100-kHz vibration with an amplitude of 19 nm is measured even when the fiber interferometer is intentionally perturbed, which confirms the effectiveness of the proposed method.

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Optimization of displacement-measuring quadrature interferometers considering the real properties of optical components

Cited by 14 publications

References 14 publications

High-resolution detection of small distance changes by an optical frequency comb

High-resolution detection of small distance changes by an optical frequency comb

Dual-probe homodyne quadrature laser interferometer

Interferometric dynamic displacement measurement using phase-modulated light along with stepwise control of operation point

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