Non-steady-state photoelectromotive force effect under linear and periodical phase modulation: application to detection of Doppler frequency shift

Mansurova, S.; Zarate, Pedro Moreno; Rodriguez, P.; Stepanov, S.; Köber, Sebastian; Meerholz, Klaus

doi:10.1364/ol.37.000383

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…Constant frequency shift can arise because of the Doppler effect, and sinusoidal phase modulation appears in the beam reflected from a vibrating object. Corresponding schemes of velocimeters and vibrometers using photorefractive materials have been proposed [3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Non-steady-state photoelectromotive force and two-wave mixing in photorefractive crystals under frequency modulated illumination

Bryushinin¹,

Kulikov²,

Соколов³

et al. 2014

J. Opt. Soc. Am. B

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We report the excitation of non-steady-state photoelectromotive force and two-wave mixing signals using uniformly accelerated motion of the recording light pattern. Such illumination is created by linear frequency modulation of the interfering light beams. The pulse response is predicted theoretically and observed experimentally in GaAs and Bi 12 TiO 20 crystals at λ 633 nm. The evolution of the pulse shape versus sweep rate is demonstrated and explained in the frames of the developed theory. The application of the effects in laser Doppler velocimeters and accelerometers is discussed as well.

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Section: Introductionmentioning

confidence: 99%

Non-steady-state photoelectromotive force and two-wave mixing in photorefractive crystals under frequency modulated illumination

Bryushinin¹,

Kulikov²,

Соколов³

et al. 2014

J. Opt. Soc. Am. B

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“…A multiscale method is proposed to simulate blood flow and to enhance tubular structures in the CT image [14]. The thin-plate spline [15–17] interpolation method is utilized to transform images between the sector and rectangle diagram.…”

Section: Introductionmentioning

confidence: 99%

Fast and Automatic Ultrasound Simulation from CT Images

Wei

Yang

Liu

et al. 2013

Computational and Mathematical Methods in Medicine

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Ultrasound is currently widely used in clinical diagnosis because of its fast and safe imaging principles. As the anatomical structures present in an ultrasound image are not as clear as CT or MRI. Physicians usually need advance clinical knowledge and experience to distinguish diseased tissues. Fast simulation of ultrasound provides a cost-effective way for the training and correlation of ultrasound and the anatomic structures. In this paper, a novel method is proposed for fast simulation of ultrasound from a CT image. A multiscale method is developed to enhance tubular structures so as to simulate the blood flow. The acoustic response of common tissues is generated by weighted integration of adjacent regions on the ultrasound propagation path in the CT image, from which parameters, including attenuation, reflection, scattering, and noise, are estimated simultaneously. The thin-plate spline interpolation method is employed to transform the simulation image between polar and rectangular coordinate systems. The Kaiser window function is utilized to produce integration and radial blurring effects of multiple transducer elements. Experimental results show that the developed method is very fast and effective, allowing realistic ultrasound to be fast generated. Given that the developed method is fully automatic, it can be utilized for ultrasound guided navigation in clinical practice and for training purpose.

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“…A constant frequency shift can arise because of the Doppler effect, while the sinusoidal phase modulation appears in the beam reflected by a vibrating object. Corresponding schemes of velocimeters and vibrometers using photoconductive materials have been proposed [9][10][11][12][13].…”

mentioning

confidence: 99%

Non-steady-state photo-EMF in semi-insulating GaAs under frequency-modulated illumination

Bryushinin¹,

Kulikov²,

Соколов³

et al. 2014

EPL

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We report the excitation of the non-steady-state photoelectromotive force using a uniformly accelerated motion of the recording light pattern. Such illumination is created by the linear frequency modulation of the interfering light beams. The pulsed response is observed experimentally in a semi-insulating GaAs crystal at a light wavelength of 633 nm. The evolution of the pulse shape vs. sweep rate is demonstrated. We also discuss the possible application of the effect in laser Doppler velocimeters and accelerometers.

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Non-steady-state photoelectromotive force effect under linear and periodical phase modulation: application to detection of Doppler frequency shift

Cited by 8 publications

References 7 publications

Non-steady-state photoelectromotive force and two-wave mixing in photorefractive crystals under frequency modulated illumination

Non-steady-state photoelectromotive force and two-wave mixing in photorefractive crystals under frequency modulated illumination

Fast and Automatic Ultrasound Simulation from CT Images

Non-steady-state photo-EMF in semi-insulating GaAs under frequency-modulated illumination

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