Three-photon interference: Spectroscopy of linear and nonlinear media

Burlakov, A. V.; Kulik, S. P.; Penin, A. N.; Chekhova, Maria V.

doi:10.1134/1.558576

Cited by 10 publications

(13 citation statements)

References 23 publications

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“…In this case, biphotons, generated in the first crystal, interfere with the ones generated in the second crystal. Assuming that all the photons are within the transverse interaction region, the interference pattern of the signal photons is given by 18 19 20 21 22 :…”

Section: Resultsmentioning

confidence: 99%

“…Note that the visibility of the interference also depends on the spatial overlap of signal and idler beams 21 22 24 26 27 . The overlap is defined by the interplay of the size of the interaction region, given by the pump beam diameter d and the gap length L ′, and the scattering angle of down-converted photons θ s 21 22 . The following condition should be fulfilled in order to achieve high visibility of the interference: , see inset in Fig.…”

Section: Resultsmentioning

confidence: 99%

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Nonlinear infrared spectroscopy free from spectral selection

Paterova

Lung

Kalashnikov

et al. 2017

Sci Rep

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Infrared (IR) spectroscopy is an indispensable tool for many practical applications including material analysis and sensing. Existing IR spectroscopy techniques face challenges related to the inferior performance and the high cost of IR-grade components. Here, we develop a new method, which allows studying properties of materials in the IR range using only visible light optics and detectors. It is based on the nonlinear interference of entangled photons, generated via Spontaneous Parametric Down Conversion (SPDC). In our interferometer, the phase of the signal photon in the visible range depends on the phase of an entangled IR photon. When the IR photon is traveling through the media, its properties can be found from observations of the visible photon. We directly acquire the SPDC signal with a visible range CCD camera and use a numerical algorithm to infer the absorption coefficient and the refraction index of the sample in the IR range. Our method does not require the use of a spectrometer and a slit, thus it allows achieving higher signal-to-noise ratio than the earlier developed method.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Nonlinear infrared spectroscopy free from spectral selection

Paterova

Lung

Kalashnikov

et al. 2017

Sci Rep

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“…In this interferometer the phase φ s includes the phase gained inside the second crystal too. Taking into account Equation (2.13), it is possible to redefine the arguments under the cosine function in Equation (2.26) [75,76]:…”

Section: Nonlinear Degenerate Mach-zehnder Interferometermentioning

confidence: 99%

“…In case of an air gap between crystals, the change in optical delay is negligibly small. Moreover, this interferometer is intrinsically stable compared to non-degenerate configuration, because of the spatial degeneracy of the interferometer arms [75]. The phase change due to perturbations in the interferometer (temperature, pressure or environmental fluctuations) is given by [75]:…”

Section: Nonlinear Degenerate Mach-zehnder Interferometermentioning

confidence: 99%

“…This interferometer configuration is easier to align compared to the non-degenerate one, and there is no need for active phase stabilization. An even simpler geometry of the degenerate Mach-Zehnder interferometer with one nonlinear crystal and a mirror is shown in Figure 2.7 (b) [75]. Besides the intrinsic stability, the phase matching is automatically achieved, since all the SPDC photons are generated in the same crystal.…”

Section: Nonlinear Degenerate Mach-zehnder Interferometermentioning

confidence: 99%

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Infrared metrology using visible light

Paterova¹

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I would like to thank all the team members of our research group and especially those, who took direct part in the project, which results were included in this work.Big thanks to Dr. Dmitry A. Kalashnikov for his guidance and transfer of knowledge and skills at the beginning of my Ph.D. Thanks to Dr. Hongzhi Yang for the help with the automation of the experimental setups and with data acquisition. Thanks to Dr. Chengwu An for his always useful comments and remarks on the conducting of experiments.I would like to thank all the Thesis Advisory Committee members for the numerous discussions, which importance is difficult to overestimate. Thanks to Prof. Rainer

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Measurement of infrared optical constants with visible photons

Paterova

Yang

et al. 2018

New J. Phys.

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We demonstrate a new scheme for infrared spectroscopy with visible light sources and detectors. The technique relies on the nonlinear interference of correlated photons, produced via spontaneous parametric down conversion in a nonlinear crystal. Visible and infrared photons are split into two paths and the infrared photons interact with the sample under study. The photons are reflected back to the crystal, resembling a conventional Michelson interferometer. Interference of the visible photons is observed and it is dependent on the phases of all three interacting photons: pump, visible and infrared. The transmission coefficient and the refractive index of the sample in the infrared range can be inferred from the interference pattern of visible photons. The method does not require the use of potentially expensive and inefficient infrared detectors and sources, it can be applied to a broad variety of samples, and it does not require a priori knowledge of sample properties in the visible range.

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Three-photon interference: Spectroscopy of linear and nonlinear media

Cited by 10 publications

References 23 publications

Nonlinear infrared spectroscopy free from spectral selection

Nonlinear infrared spectroscopy free from spectral selection

Infrared metrology using visible light

Measurement of infrared optical constants with visible photons

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