Accurate polarization interferometer

Greco, V.; Molesini, Giuseppe; Quercioli, Franco

doi:10.1063/1.1145429

Cited by 49 publications

(26 citation statements)

References 10 publications

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“…It is a homodyne Michelson interferometer with two readout quadratures [10], 0° and 90°, where the two arms of the interferometer are indicated by a black dashed box. This type of two-beam interferometer is widely used for accurate displacement metrology and provides a relatively simple optical layout, making it an attractive choice for testing the performance of pulsed laser interferometry.…”

Section: Pulsed Laser Interferometermentioning

confidence: 99%

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Pulsed laser interferometry with sub-picometer resolution using quadrature detection

Shao

Gorman

2016

Opt. Express

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Femtosecond pulsed laser interferometry has important applications in measuring picometer-level displacements on sub-nanosecond time scales. In this paper, we experimentally examine its achievable displacement resolution, as well as the relationship between the laser’s optical spectrum and the interferometer’s effective wavelength. The resulting broadband displacement noise and noise floor of the pulsed laser Michelson interferometer are equivalent to that achieved with a stabilized continuous wave HeNe laser, where values of 1.01 nm RMS and 27.75 fm/√Hz have been demonstrated. It is also shown that a single effective wavelength can accurately describe the fringes of the pulsed laser interferometer but the effective wavelength value can only be determined from the optical spectrum under certain conditions. These results will be used for time-resolved displacement metrology with picosecond temporal resolution in the future.

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Section: Pulsed Laser Interferometermentioning

confidence: 99%

“…The three quarter-wave plates indicated in red in Fig. 1 are rotated with their fast axes at 45°, while the half-wave plate in red has its fast axis at 22.5° [10]. The wave plates are selected to match with the laser in use (pulsed laser, 780 nm; CW laser, 633 nm).…”

Section: Pulsed Laser Interferometermentioning

confidence: 99%

Pulsed laser interferometry with sub-picometer resolution using quadrature detection

Shao

Gorman

2016

Opt. Express

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“…Continuous phase measurement using two modes As a concrete example, consider two polarization modes as depicted in Figure 1, similar to [11,12]. A reference laser in an equal superposition of horizontal and vertical polarization is launched into a balanced Mach-Zehnder interferometer (MZI), constructed with non-polarizing 50:50 beam splitters (BS).…”

Section: Introductionmentioning

confidence: 99%

Continuous phase stabilization and active interferometer control using two modes

Jotzu

Bartley

Coldenstrodt-Ronge

et al. 2012

Journal of Modern Optics

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We present a computer-based active interferometer stabilization method that can be set to an arbitrary phase difference and does not rely on modulation of the interfering beams. The scheme utilizes two orthogonal modes propagating through the interferometer with a constant phase difference between them to extract a common relative phase and generate a linear feedback signal. Switching times of 50 ms over a range of 0-6 radians at 632.8 nm are experimentally demonstrated. The relative interferometer phase can be stabilized up to several days to within AE 3 .

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“…These techniques are often costly to implement and involve complicated signal processing and recovery schemes. Another major drawback in interferometric Phase difference after second pass through film devices is due to the attenuation of the useful interference signal or signal fading caused by the fluctuation of polarization state of the light waves when the sensing fiber is subject to intense loading [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Dynamic displacement measurements with a dual-cavity fiber Fabry-Perot interferometer

Pullteap¹,

Seat²

2008

SPIE Proceedings

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An extrinsic fiber Fabry-Perot interferometric sensor is reported for use in vibrometric applications. The sensor operates on the principle of a "virtual" dual-cavity generated within the sensing arm due to the introduction of a birefringent element into the optical path of the sensing cavity. The resulting two sets of "phase-shifted" interference signals produced allowed non-ambiguous directional detection as well as improved resolution in displacement measurements. Experimental displacement data obtained using the fiber interferometer were found to be in good agreement with the reference sensor employed. The potential for overcoming polarization-induced signal fading is also qualitatively illustrated.

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Accurate polarization interferometer

Cited by 49 publications

References 10 publications

Pulsed laser interferometry with sub-picometer resolution using quadrature detection

Pulsed laser interferometry with sub-picometer resolution using quadrature detection

Continuous phase stabilization and active interferometer control using two modes

Dynamic displacement measurements with a dual-cavity fiber Fabry-Perot interferometer

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