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 20 of 42 for “"Michelson interferometer"”.
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MICA optical : a low-cost, educational Michelson interferometer
… the development of a MICA optical project, the Michelson interferometer. In this classic experiment, by correctly assembling and aligning the optical components, two different interference patterns can be obtained and observed. Other potential experiments include the measurement of light …
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Noise analysis of a suspended high power Michelson interferometer
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1997.
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High-Temperature Displacement Sensor Using a White-Light Scanning Fiber Michelson Interferometer
… The primary development of a white-light Michelson interferometer that utilizes a sapphire fiber sensing head is presented in this thesis. Development includes efforts to combat the poor optical quality of the sapphire fiber, minimize polarization mode fading, and preferentially excite the …
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Creation and Experimental Validation of a Numerical Model of a Michelson Interferometer
… budget. The visibility of fringes produced by a Michelson interferometer is known to be sensitive to the degree to which the incident light beam is monochromatic. Therefore, the Michelson interferometer has significant potential as a tool for quantifying the degree of temporal coherence of a …
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A far-infrared Michelson interferometer and its application to the study of photoconductivity in ultra-pure germanium
Contains fulltext : mmubn000001_026603683.pdf (Publisher’s version ) (Open Access)
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Fiber-Optic Michelson Interferometer with Faraday Mirrors for Acoustic Sensing using a 3 × 3 Coupler and Symmetric Demodulation Scheme
… acoustic sensor is presented utilizing the Michelson interferometer configuration with Faraday mirrors to eliminate po- larization fading. A 3 × 3 coupler is used as the beamsplitting component, and a symmetric demodulation algorithm is applied to recover the phase signal. This sensor has a …
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Temperature insensitive fiber optic interferometer and applications
… to produce a relatively temperature insensitive Michelson interferometer is presented. The modification was accomplished by cleaving the coupler after the minimum taper region and polishing, perpendicular to the endface, to a point just short of the interaction region. This allows one of the two …
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A multi-mode spectrometer for atomic emission spectrometry
… been developed. The MMS integrates a scanning Michelson interferometer, a flat-field grating, and a linear photodiode array detector into a single spectrometer system. With these components, the MMS is capable of applying dispersive, interferometric, or combined dispersive/interferometric …
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Characterisation of micromechanical materials and MEMS structures using optically generated ultrasound
… vibrometer or a custom built large bandwidth Michelson interferometer. An investigation has been conducted on the optical conversion efficiency into Lamb waves. Lamb wave amplitudes were measured on a silicon wafer and a variety of thin films on silicon wafers. This was to determine how …
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Investigation of spacecraft cluster autonomy through an acoustic imaging interferometric testbed
… architecture is presented. Separated spacecraft interferometers have been proposed for applications in sparse aperture radar or astronomical observations. Modeled after these systems, an integrated hardware and software interferometry testbed is developed. Utilizing acoustic sources and sensors …
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Optical coherence tomography applied to investigations of optical properties of paintings
… Coherence Tomography (OCT), a fast 3D scanning Michelson interferometer normally applied to biomedical applications has recently been applied to art related subjects. In this thesis, the various applications of OCT to the non invasive imaging of paintings are explored in detail. The spectral …
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A liquid-in-glass thermometer with sub-microKelvin resolution, and its application for calorimetry
… in which the meniscus level was read by a Michelson interferometer. Contact angle hysteresis was limited by a wetting film and the low meniscus velocity. The sub-microKelvin resolution achieved was the lowest known for any thermometer above cryogenic temperatures. The thermometer was …
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Digital frequency demodulation for a laser vibrometer
… of a digital frequency demodulator applied to a Michelson interferometer-based scanning laser vibrometer. The laser vibrometer is a velocity transducer that produces frequency-modulated signals that have traditionally been optically or electronically frequency shifted from baseband to an …
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Design and fabrication of a hi-fidelity free space optical Grover multiport for sensing applications
… as well as the recreation of the Grover-Michelson interferometer.
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Capacitive displacement sensing for the Nanogate
… to absolute displacement by calibration with a Michelson interferometer-based displacement sensor. The results show a resolution better than 0.1 nm and the long term drift error is less than 1 nm.
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Single-photon frequency upconversion for long-distance quantum teleportation and communication
… in bulk periodically poled lithium niobate and a Michelson interferometer to stabilize the phase. Using this bidirectional upconversion technique, entangled photons produced in a periodically poled parametric downconverter can be translated to a different wavelength with preservation of their …
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A fibre optic based ranging sensor
… laser diode, was launched into a fibre optic Michelson interferometer which was realised using a 3 dB coupler, with the ranging performed in a free-air path which, formed part of one arm. A variety of optical launching schemes were investigated, and processing electronics were developed …
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Characterization of Mechanical Properties at the Micro/Nano Scale: Stiction Failure of MEMS, High-Frequency Michelson Interferometry and Carbon NanoFibers
… Furthermore, the description of a high-frequency Michelson Interferometer is discussed for imaging of crack propagation of the μcantilevers with their substrate at the nano-scale and harmonic imaging of MEMS/NEMS. Van der Waals forces are also responsible for the adhesion in nonwoven carbon …
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Direct and quantitative broadband absorptance micro/nano spectroscopy using FTIR and bilayer 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 as small as ~4 pW. Fourier …
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Applications of Fourier Domain Mode Locked lasers for optical coherence tomography imaging
… interferometry, typically with a fiber optic Michelson interferometer. OCT imaging has recently been performed by measuring the spectrum of the interference signal in the Fourier domain. In "swept source OCT" implementations, the interference spectra are generated with a wavelength-swept laser …
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