Phase-shifted polarimetric surface plasmon resonance sensor using a liquid crystal retarder and a diverging beam

Watad, Ibrahim; Abdulhalim, Ibrahim

doi:10.1364/ol.44.001607

Cited by 13 publications

(9 citation statements)

References 18 publications

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“…In this paper, two optical interferometric sensing methods based on measurement of the phase shift of the BSWs and GWs supported by a 1DPhC are presented. The methods, as alternatives to original approaches [ 33 , 34 , 35 , 36 , 37 , 38 , 39 ], are applied in both the spectral and spatial domains, and as an analyte, moist air of a varied relative humidity (RH) is used. For the 1DPhC under test we show that the phase shifts of both the BSW and GW can be resolved using the spectral method.…”

Section: Introductionmentioning

confidence: 99%

Efficient Optical Sensing Based on Phase Shift of Waves Supported by a One-Dimensional Photonic Crystal

Kaňok

Hlubina

Gembalová

et al. 2021

Sensors

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Interferometric methods of optical sensing based on the phase shift of the Bloch surface waves (BSWs) and guided waves (GWs) supported by a one-dimensional photonic crystal are presented. The photonic crystal, composed of six SiO2/TiO2 bilayers with a termination layer of TiO2, is employed in the Kretschmann configuration. Under resonance condition, an abrupt phase change is revealed, and the corresponding phase shift is measured by interferometric techniques applied in both the spectral and spatial domains. The spectral interferometric technique employing a birefringent quartz crystal is used to obtain interference of projections of p- and s-polarized light waves reflected from the photonic crystal. The phase shifts are retrieved by processing the spectral interferograms recorded for various values of relative humidity (RH) of air, giving the sensitivity to the RH as high as 0.029 rad/%RH and 0.012 rad/%RH for the BSW and GW, respectively. The spatial interferometric technique employs a Wollaston prism and an analyzer to generate an interference pattern, which is processed to retrieve the phase difference, and results are in good agreement with those obtained by sensing the phase shift in the spectral domain. In addition, from the derivative of the spectral phase shifts, the peak positions are obtained, and their changes with the RH give the sensitivities of 0.094 nm/%RH and 0.061 nm/%RH for the BSW and GW, respectively. These experimental results demonstrate an efficient optical sensing with a lot of applications in various research areas.

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Section: Introductionmentioning

confidence: 99%

Efficient Optical Sensing Based on Phase Shift of Waves Supported by a One-Dimensional Photonic Crystal

Kaňok

Hlubina

Gembalová

et al. 2021

Sensors

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“…An LCM is also a phase retarder that is able to induce an accurate phase shift between the p-and s-polarized components by applying appropriate voltages, and finally obtaining the SPR-induced phase difference with the use of a phase retrieval algorithm [27,28]. Recently, a few teams have also proposed SPR ellipsometry based on PEM and LCM phase modulators [29,30]. However, the use of electronic modulators could result in a significant increase in both the complexity and the cost of the system, not to mention that it may also increase noise [20].…”

Section: Introductionmentioning

confidence: 99%

A Simple Phase-Sensitive Surface Plasmon Resonance Sensor Based on Simultaneous Polarization Measurement Strategy

Chen

Kuo

et al. 2021

Sensors

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The SPR phenomenon results in an abrupt change in the optical phase such that one can measure the phase shift of the reflected light as a sensing parameter. Moreover, many studies have demonstrated that the phase changes more acutely than the intensity, leading to a higher sensitivity to the refractive index change. However, currently, the optical phase cannot be measured directly because of its high frequency; therefore, investigators usually have to use complicated techniques for the extraction of phase information. In this study, we propose a simple and effective strategy for measuring the SPR phase shift based on phase-shift interferometry. In this system, the polarization-dependent interference signals are recorded simultaneously by a pixelated polarization camera in a single snapshot. Subsequently, the phase information can be effortlessly acquired by a phase extraction algorithm. Experimentally, the proposed phase-sensitive SPR sensor was successfully applied for the detection of small molecules of glyphosate, which is the most frequently used herbicide worldwide. Additionally, the sensor exhibited a detection limit of 15 ng/mL (0.015 ppm). Regarding its simplicity and effectiveness, we believe that our phase-sensitive SPR system presents a prospective method for acquiring phase signals.

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“…In our previous work, the wavelength of incident light was found to affect detection sensitivity in SPR temperature monitoring [ 30 ]. Moreover, SPR phase interrogation at the particular incident wavelength provided a high-resolution angular measurement and other applications [ 31 , 73 , 74 , 75 , 76 , 77 ].…”

Section: Introductionmentioning

confidence: 99%

Reusable TiN Substrate for Surface Plasmon Resonance Heterodyne Phase Interrogation Sensor

et al. 2020

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A TiN-based substrate with high reusability presented high-sensitivity refractive index measurements in a home-built surface plasmon resonance (SPR) heterodyne phase interrogation system. TiN layers with and without additional inclined-deposited TiN (i-TiN) layers on glass substrates reached high bulk charge carrier densities of 1.28 × 1022 and 1.91 × 1022 cm−3, respectively. The additional 1.4 nm i-TiN layer of the nanorod array presented a detection limit of 6.1 × 10−7 RIU and was higher than that of the 46 nm TiN layer at 1.2 × 10−6 RIU when measuring the refractive index of a glucose solution. Furthermore, the long-term durability of the TiN-based substrate demonstrated by multiple processing experiments presented a high potential for various practical sensing applications.

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Phase-shifted polarimetric surface plasmon resonance sensor using a liquid crystal retarder and a diverging beam

Cited by 13 publications

References 18 publications

Efficient Optical Sensing Based on Phase Shift of Waves Supported by a One-Dimensional Photonic Crystal

Efficient Optical Sensing Based on Phase Shift of Waves Supported by a One-Dimensional Photonic Crystal

A Simple Phase-Sensitive Surface Plasmon Resonance Sensor Based on Simultaneous Polarization Measurement Strategy

Reusable TiN Substrate for Surface Plasmon Resonance Heterodyne Phase Interrogation Sensor

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