Quadrature phase-shift error analysis using a homodyne laser interferometer

Gregorčič, Peter; Požar, Tomaž; Možina, Janez

doi:10.1364/oe.17.016322

Cited by 68 publications

(44 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The resulting phase shift observed by the interferometer was calculated from the raw fringe data using a well-established data processing procedure for the traditional CW laser interferometer with two-quadrature detection [13]. In short, the voltage outputs from the two photodetectors were normalized to the same peak amplitude and the DC offset was removed.…”

Section: Quasi-static Displacement Measurementsmentioning

confidence: 99%

Pulsed laser interferometry with sub-picometer resolution using quadrature detection

Shao

Gorman

2016

Opt. Express

View full text Add to dashboard Cite

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.

show abstract

Section: Quasi-static Displacement Measurementsmentioning

confidence: 99%

Pulsed laser interferometry with sub-picometer resolution using quadrature detection

Shao

Gorman

2016

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Its quadrature scheme is explained in Table 1, which describes the function of each constituent used. readers who are interested in the details should peruse the principle of operation and the corresponding theoretical analysis of the single-probe homodyne quadrature laser interferometer (HQLI), which is extensively described in [16]. The main modification in the optical setup of the single-probe HQLI, to obtain the dual-probe HQLI, is the employment of the reference arm as the second probe.…”

Section: Principle Of Operationmentioning

confidence: 99%

“…This is done rather than directly returning the beam toward the nonpolarizing beam splitter (NBS). The DPQHLI can be theoretically treated by modeling the propagation of coherent, collimated, and polarized light through various optical components using Jones matrix formalism as was done for the single-probe HQLI in [16]. The resulting optical powers of the beams illuminating the photodiodes are proportional to the signals x and y at the two respective outputs of the photodiodes PDx and PDy, each of which monitors mutually orthogonal polarizations.…”

Section: Principle Of Operationmentioning

confidence: 99%

Dual-probe homodyne quadrature laser interferometer

Požar

Možina

2012

Appl. Opt.

Self Cite

View full text Add to dashboard Cite

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.

show abstract

“…The underlying principle is to measure the phase variation of a single light wavelength with distance by employing homodyne [9][10][11][12] or heterodyne phase-measuring electronics [13][14][15][16]. This single wavelength method leads to incremental displacement measurement with nanometer-region sub-wavelength resolutions over extensive ranges up to several meters.…”

Section: Introductionmentioning

confidence: 99%

Distance Measurements Using Mode-Locked Lasers: A Review

Jang

Kim

2018

Nanomanuf Metrol

View full text Add to dashboard Cite

We present a progress review on the advance of distance measurements made at KAIST by making use of mode-locked lasers as the light source to meet ever-growing industrial demands on the measurement precision and functionality. Diverse principles exploited for the progress are described in this review with focus on four attributes: first, the optical spectrum of a mode-locked laser, distinctively called the frequency comb, permits multi-wavelength interferometry to be realized for absolute distance measurement up to several meters without losing the nanometer precision of well-established laser-based phase-measuring displacement measurement. Second, the frequency comb enables spectrally resolved interferometry for absolute distance measurement to be conducted with a nanometer resolution by Fourier transform analysis of the dispersive interference data captured using a spectrometer. Third, the mode-locked laser in the time domain appears as a train of ultrashort pulses, of which the time-of-flight is measured with a picosecond resolution by control of the pulse repetition rate with reference to the radio-frequency atomic clock. Fourth, the pulse-to-pulse cross-correlation occurring in the optical frequency domain is down-converted to the radio-frequency domain to achieve femtosecond pulse timing precision by means of dual-comb interference. All these principles based on unique spectral and temporal characteristics of ultrashort mode-locked lasers are anticipated to make contributions to the advance of nanotechnology particularly in manufacturing and metrology.

show abstract

Quadrature phase-shift error analysis using a homodyne laser interferometer

Cited by 68 publications

References 17 publications

Pulsed laser interferometry with sub-picometer resolution using quadrature detection

Pulsed laser interferometry with sub-picometer resolution using quadrature detection

Dual-probe homodyne quadrature laser interferometer

Distance Measurements Using Mode-Locked Lasers: A Review

Contact Info

Product

Resources

About