Measurement of refractive index variation of liquids by surface plasmon resonance and wavelength-modulated heterodyne interferometry

Lee, Ju Yi; Tsai, Shin Kai

doi:10.1016/j.optcom.2010.10.060

Cited by 32 publications

(12 citation statements)

References 19 publications

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“…Recently, the photonic spin Hall effect combined with weak value amplification was employed to measure the optical conductivity of graphene, demonstrating that it varies significantly for different thicknesses of graphene layers and is proportional to the number of graphene layers . In this regard, we should point out that the thickness and flatness of the gold film used in this work will definitely impact on the quality of the data obtained in the present experiments, as they affect the refractive index and the penetration depth of the gold film, hence the experiment results. − Besides, surface plasmon resonance combined with weak value amplification can start with a much lower initial light intensity with a good-quality gold film, thus increasing the dynamic range and measurement resolution for intensity-based detection. , The gold film deposited on the BK7 prism surface in our work was fabricated by thermal vacuum evaporation, which has nanometer variation in both flatness and thickness …”

Section: Resultsmentioning

confidence: 81%

Measurement of Chiral Molecular Parameters Based on a Combination of Surface Plasmon Resonance and Weak Value Amplification

Luo

et al. 2020

ACS Sens.

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A novel combination of surface plasmon resonance (SPR) and weak value amplification (WVA) is employed to measure the optical rotation angle and refractive index of chiral enantiomers such as sugars and amino acids. An extremely low optical rotation change (2.73 × 10 −4 rad) is readily measurable, with a resolution of 6.75 × 10 −7 rad, 1 order of magnitude higher than that obtained using weak value amplification with intensity modulation, and a refractive index change of 1.13 × 10 −6 RIU is also detected, with a resolution of 1.99 × 10 −9 RIU, a nearly 1order-of-magnitude increase in sensitivity over weak measurement based on a Mach−Zehnder interferometer. The optical activity and refractive index changes of chiral molecules are determined in real time by measurements of the output light intensity variation, whereby the absolute configuration of the chiral molecule is identified through the relation between intensity and molecular orientation. The SPR−WVA combination sensing scheme fills the gap of capability for detecting the optical activity of a molecular solution, which has not been possible with conventional SPR alone.

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Section: Resultsmentioning

confidence: 81%

Measurement of Chiral Molecular Parameters Based on a Combination of Surface Plasmon Resonance and Weak Value Amplification

Luo

et al. 2020

ACS Sens.

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“…A quasi-linear dependence of the RI change of the salt solution's concentration (wt. %) is possible [25]. Various RIs can be adjusted by mixing with different weights of water and salt.…”

Section: Resultsmentioning

confidence: 99%

A Fluidic Birefringent Sensor for Concentration Measurements of Chemical Solutions in Homodyne Interferometer

Twu

Chen

et al. 2016

Applied Sciences

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Abstract:We have fabricated and tested, to the best of our knowledge, the first fluidic birefringent sensor (FBS) for the concentration measurements of chemical solutions in a homodyne interferometer. The performance of KTP (potassium titanyl phosphate)-based FBS has been experimentally evaluated for successful concentration measurements in salt and hydrochloric acid solutions. The measurement resolution is 0.0088 wt. % in the concentration range of 2.5 wt. % for hydrochloric acid solution. According to the experimental results, the chemical resistance property gives the KTP sensor the potential to be used in harsh environments.

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“…And these methods can roughly divide into fiber type sensor [41,[44][45]49] and non-fiber type sensor [42-43, 46-48, 50]. In this section, we will review some recent development in both type sensors for measuring concentration of the specific chemical compound [41][42][43][44][45][46][47][48][49][50].…”

Section: Concentration Measurement With Heterodyne Interferometermentioning

confidence: 99%

“…Heterodyne phase detection techniques offer the high measurement performance high sensitivity and high resolution in real-time. J. Y. Lee [43] proposed wavelength-modulation circular heterodyne interferometer (WMCHI) with SPR sensor for measuring the different concentration of alcohol. The diagram of the WMCHI is shown in figure 26.…”

Section: Concentration Measurement With Heterodyne Interferometermentioning

confidence: 99%

The Applications of the Heterodyne Interferoemetry

Hsu¹

2012

Interferometry - Research and Applications in Science and Technology

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Measurement of refractive index variation of liquids by surface plasmon resonance and wavelength-modulated heterodyne interferometry

Cited by 32 publications

References 19 publications

Measurement of Chiral Molecular Parameters Based on a Combination of Surface Plasmon Resonance and Weak Value Amplification

Measurement of Chiral Molecular Parameters Based on a Combination of Surface Plasmon Resonance and Weak Value Amplification

A Fluidic Birefringent Sensor for Concentration Measurements of Chemical Solutions in Homodyne Interferometer

The Applications of the Heterodyne Interferoemetry

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