Side-illumination fluorescence spectroscopy II Applications to squaraine-dye-doped polymer optical fibers

Kruhlak, Robert J.; Kuzyk, Mark G.

doi:10.1364/josab.16.001756

Cited by 30 publications

(23 citation statements)

References 17 publications

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“…to remain compatible with previous inhomogeneous broadening representations which use Gaussian statistics [14], [15], [16], [17]. Indeed, such statistics other than pure Gaussian were observed in light scattering experiments [18], [16], [17].…”

Section: Theorysupporting

confidence: 86%

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A General Theory of Inhomogeneous Broadening for Nonlinear Susceptibilities: The Polarizability and Hyperpolarizability

Kruhlak

Kuzyk

2008

IEEE J. Select. Topics Quantum Electron.

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Abstract-While nonlinear optical spectroscopy is becoming more commonly used to study the excited states of nonlinearoptical systems, a general theory of inhomogeneous broadening is rarely applied in lieu of either a simple Lorentzian or Gaussian model. In this work, we generalize all the important linear and second-order nonlinear susceptibility expressions obtained with sum-over state quantum calculations to include Gaussian and stretched Gaussian distributions of Lorentzians. We show that using the correct model to analyze experiments that probe a limited wavelength range can be critical and that this theory is better able to fit the subtle spectral features -such as the shoulder region of a resonance -when both models produce qualitatively similar responses.

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Section: Theorysupporting

confidence: 86%

“…Indeed, such statistics other than pure Gaussian were observed in light scattering experiments [18], [16], [17]. Because B(β) is difficult to calculate, we need to make simplifying assumptions.…”

Section: Theorymentioning

confidence: 99%

A General Theory of Inhomogeneous Broadening for Nonlinear Susceptibilities: The Polarizability and Hyperpolarizability

Kruhlak

Kuzyk

2008

IEEE J. Select. Topics Quantum Electron.

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“…In particular, some applications take advantage of the possibility of adapting POF into a U-shape to facilitate access to the evanescent field [7] even with just a lateral polishing of the fiber [8] to increase the interaction with the outer medium. A different possible configuration involves the interrogation of a dye-doped core POF using a side-illumination technique [11,12]. In this case a laser source is laterally focused in the fiber core to excite the inner fluorescence.…”

Section: Introductionmentioning

confidence: 99%

Improved fluorescence signal with tapered polymer optical fibers under side-illumination

Pulido¹,

Esteban²

2010

Sensors and Actuators B: Chemical

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“…nclad = 1.43). The attenuation of this fibre was measured nondestructively by applying the side illumination method [5]. Monoexponential fitting yields a total attenuation of approx.…”

Section: Elastomeric Fluorescent Pofmentioning

confidence: 99%

Elastomeric fluorescent POF for partial discharge detection: recent progress

et al. 2015

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We present recent progress in our development of fibre-optic sensors for the detection of partial discharge (PD) in silicone cable accessories, based on detecting related low-level optical emission. We experimentally show that the sensitive optical detection of PD can dramatically enhance the performance of conventional electrical PD measurement in electromagnetically noisy environments, and that it can yield high sensitivity and specificity even when no synchronous electrical PD measurement is conducted. This is demonstrated using a real-scale model of a high voltage cable accessory with a surface-attached conventional thermoplastic fluorescent polymer optical fibre (F-POF) sensor. In order to increase light collection efficiency, as a prerequisite for a commercially competitive implementation using cost-efficient detectors, sensing fibres will have to be integrated into the silicone rubber insulation, close to the potential origin of PD-induced damage. This is the rationale for our efforts to develop elastomeric fluorescent sensing fibres, tailored to the requirements of the application. We discuss specific challenges to be tackled and report on the successful implementation of allsilicone rubber fluorescent POF, to our best knowledge for the first time.

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Side-illumination fluorescence spectroscopy II Applications to squaraine-dye-doped polymer optical fibers

Cited by 30 publications

References 17 publications

A General Theory of Inhomogeneous Broadening for Nonlinear Susceptibilities: The Polarizability and Hyperpolarizability

A General Theory of Inhomogeneous Broadening for Nonlinear Susceptibilities: The Polarizability and Hyperpolarizability

Improved fluorescence signal with tapered polymer optical fibers under side-illumination

Elastomeric fluorescent POF for partial discharge detection: recent progress

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