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OSA Continuum

Optical temperature sensor and switch controlled by competition between phonon and polarization dressing in Pr3+:YSO

Abubakkar Khan, Faizan Raza, Irfan Ahmed, Siqiang Zhang, Changbiao Li, Al Imran, Yanpeng Zhang

Published Mar 12, 2019• 0 citations
Publisher

Abstract

We explore the alteration that occurs in Autler-Townes (AT) splitting caused by the competition of phonon intensity and polarized dressing fields in second-order fluorescence (FL) signals in both the spectral and the time domain. By varying the polarization dressing along with temperature, we control the AT-splitting of the FL signal. Furthermore, we analyze the noise correlation and squeezing of spontaneous four-wave mixing (SP-FWM) to investigate the effect of phonon and polarized dressing fields. These results are applied for optical temperature sensors and switching devices, which can be controlled by the competition between phonon and polarization dressing. Optical temperature sensor sensitivity and switching speeds are 96% and 15 ns, respectively.

DOI
10.1364/osac.2.000786

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We explore the alteration that occurs in Autler-Townes (AT) splitting caused by the competition of phonon intensity and polarized dressing fields in second-order fluorescence (FL) signals in both the spectral and the time domain. By varying the polarization dressing along with temperature, we control the AT-splitting of the FL signal. Furthermore, we analyze the noise correlation and squeezing of spontaneous four-wave mixing (SP-FWM) to investigate the effect of phonon and polarized dressing fields. These results are applied for optical temperature sensors and switching devices, which can be controlled by the competition between phonon and polarization dressing. Optical temperature sensor sensitivity and switching speeds are 96% and 15 ns, respectively.
We investigate the effect of single dressing and double dressing on fourth-order fluorescence (FL) and spontaneous four-wave mixing. The single dressing effect changes to a double dressing effect as we change the detuning (power) of the input beam from off-resonant (low power) to resonant point (high power). We also demonstrate the spectral and temporal nature of fourth-order FL and its Autler–Townes splitting caused by the competition of the phonon effect (at different temperatures) with a single and double dressed state in Pr3+:Y2SiO5 crystal. To further explore the competition between the phonon and dressing effects, we investigated intensity-noise correlation of spontaneous parametric four-wave mixing at 110 K. Our results demonstrate the dependency of YSO crystal on temperature, detuning, and power, which can be controlled by the competition between a phonon with single and double dressing.
Abstract We report modulating spontaneous four-wave mixing, fourth-order fluorescence, and intensity noise correlation by polarization-dressing effect at different temperatures in a Pr3+:Y2SiO5 crystal. The delay time, Autler–Townes splitting, and shape of correlation curve are changed observably with temperature and polarization state of dressing field. These results demonstrate competition between polarization-dressing and phonon effects. The impact of temperature on nonlinear response is very important for the stability of quantum optical devices.
For first time, we study primary and secondary Autler-Townes (AT) splitting of multi-order fluorescence (FL) in time domain. The AT-splitting of multi-order FL signals are controlled by changing power, detuning, and polarization of single and double dressing in a heteronuclear-like molecule system of Pr+3:YSO. The primary and secondary AT-splitting is caused by double cascaded dressing in time domain. The AT-splitting of multi-order FL in time domain is more sensitive than that of in spectral domain. Such results have potential applications in quantum communication and optical information processing on photonic chip.
We report the competition between the spontaneous parametric four-wave mixing and second- or fourth-order fluorescence (FL) signals in Pr 3+ :Y 2 SiO 5 crystal. By changing the powers of controlling fields and blocking different fields, the competitive two signals can be identified through the dressing effect. Meanwhile, the delay of fourth-order FL in the time domain results from splitting the energy level. Such results can find potential applications in optical information storage and processing on a photonic chip.
We study the realization of an optical transistor (switch and amplifier) and router in multi-order fluorescence (FL) and spontaneous parametric four-wave mixing (SP-FWM). We estimate that the switching speed is about 15 ns. The router action results from the Autler-Townes splitting in spectral or time domain. The switch and amplifier are realized by dressing suppression and enhancement in FL and SP-FWM. The optical transistor and router can be controlled by multi-parameters (i.e., power, detuning, or polarization).
We report the experimental observations of the second- and third-order hybrid intensity noise correlation and intensity difference squeezing among two different multi-order nonlinear fluorescence (FL) and two FL signals as well as one of pair of phase conjugate four-wave mixing in a Pr3+:Y2SiO5 crystal, respectively. The degrees of the correlation and squeezing as well as the sharp and broad peaks are studied by changing the polarization of laser fields and gate position in Λ-type three-level systems. We observed the multi-channel hybrid intensities' correlation among the composite and coexisting signals, which turn out to be positive and negative for the cases without and with Autler-Town splitting of FL, respectively. A wide broad peak and a high sharp peak are observed with respect to the degrees of correlation and polarization state controlled by wave plates. Such results may find potential applications in optical transistor and optical hybrid communications.