Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"broadband light source"”.
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Stroboscopic Inline Coherent Imaging
… ICI systems image with a continuous-wave broadband light source, which makes the system susceptible to an effect known as motion artifact. Motion artifact occurs when the interface moves over the detector exposure time, causing attenuation of the interfaces, or even a complete loss of …
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Signal processing techniques for optical fiber sensors using white light interferometry
… sensors employing a monochromatic source prove to be inadequate for applications requiring absolute, real-time value of magnitude and direction of the applied perturbation. This limitation can be overcome by using a broadband light source to extract unambiguous information from the …
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Direct and quantitative broadband absorptance micro/nano spectroscopy using FTIR and bilayer cantilever probes
… cantilever probes with a modulated broadband light source from an interferometer for spectroscopic measurements of objects. Previous studies have demonstrated the use of bilayer (or multi-layer) cantilevers as highly sensitive heat flux probes with the capability of resolving power …
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Spectral domain interferometry: A high-sensitivity, high-speed approach to quantitative phase imaging
… modulated onto the interference spectrum of the broadband light. Full-field phase images can be obtained by scanning along the orthogonal direction only. SMI incorporates the advantages of low coherence from broadband light source, high sensitivity from spectral domain interferometry and the high …
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High-finesse/small gap extrinsic Fabry-Perot interferometer and applications
… that overcomes the above drawbacks by using a broadband light source, high-finesse/small-gap extrinsic Fabry-Perot cavity, and a novel demodulation scheme is proposed. The principle of operation is based on the large spectral displacement of an intensity peak, in the transmitted output pattern, …
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Spectral/ Fourier domain Doppler Optical Coherence Tomography in the rodent retina
… is designed and built. The system includes a broadband light source to achieve ~-3[mu]m resolution and a CCD camera spectrometer with imaging speed at 25,000 axial scans per second. Applications of spectral / Fourier domain OCT for in vivo rodent retinal imaging are illustrated, including …
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High-speed Fourier domain Optical Coherence Tomography for structural and functional imaging of the retina
… from the sample arm. In conventional OCT, a broadband, low coherence light source is used to achieve high axial resolution. However, clinical and research applications of conventional OCT have been limited by low imaging speeds. Recently, new Fourier domain OCT detection methods have enabled …
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Ultrahigh speed optical coherence tomography for ophthalmic imaging applications
… detects the interference spectrum using a broadband light source and spectrometer. Swept-source / Fourier domain OCT (SS-OCT) detects the interference spectrum over time using a wavelength-swept laser. Current standard commercial ophthalmic clinical systems based on SD-OCT technology have …
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Sapphire Fiber Optic Sensor for High Temperature Measurement
… signal demodulation. The research goal is highlighted. In Chapter 2, a temperature sensing system is introduced. The environmental thermal radiation was used as the broadband light source. A sapphire wafer F-P temperature sensor head was fabricated, with an alumina cap designed to generate a …
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System Design And Optimization Of Optical Coherence Tomography
… in the last decade. In this imaging modality, a broadband light source, thus of short temporal coherence length, is used to perform imaging via interferometry. A challenge in optical coherence imaging, as in any imaging system towards biomedical diagnosis, is the quantification of image quality …
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Design and Fabrication of Optomechanical Formalin Fixation Monitoring Systems Integrated with a Millifluidic Device
… optical attenuation measurement for CNB using a broadband light source and spectroscopy. The relative optical attenuation changes of gelatin-based tissue phantom and various porcine tissues were evaluated. The optical attenuation data in broadband spectrum demonstrated different effects of …
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Pikosekunden-Weißlichterzeugung in mikrostrukturierten Fasern unter Ausnutzung nichtlinear optischer Effekte
Im Rahmen der vorliegenden Arbeit ist es erstmals gelungen, mit einem ps-Pumplaser (10 ps) Weißlicht mit einer spektralen Breite von mehr als einer optischen Oktave in einer mikrostrukturierten Faser (MSF) bei einer Pumpwellenlänge von 1064 nm zu generieren. Es ließ sich, abgesehen von …