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 8 of 8 for “"White Light Interferometer"”.
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A white light interferometer for improved achromatic holographic lithography
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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In-situ depth monitoring for a deep reactive ion etcher using a white light interferometer with active vibration cancellation
… run. The depth imager consists of a wide-field, white light interferometer with a 12" working distance, capable of imaging across a 1/2" field of view. Active feedback from a co-propagating laser interferometer is used to stabilize the system against vibrations through a feedback loop that …
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Low coherence fibre optic Fabry-Perot sensors suitable for multiplexed strain measurement
… potential of low finesse in-fibre Fabry-Perot interferometer sensors for the measurement of strain. There are a number of areas of modern engineering applications where there is a need for an alternative to conventional resistive strain gauges; particularly where a number of such sensors can be …
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High-Temperature Displacement Sensor Using a White-Light Scanning Fiber Michelson Interferometer
… has been limited. 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 …
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Characterisation of electrode microarrays produced photolithographically and with thiol self-assembled monolayers on gold electrodes
… (SKN), scanning electron microscopy (SEM) and white light interferometer microscopy that conical recessed electrodes with gradient potential along the recessed walls are formed during standard photolithographic methods for producing microelectrode arrays. Microarrays are ubiquitously used for …
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Finding the edge: Net-shape surface sculpting during cold spray deposition
… and build height, using optical microscopy and a white light interferometer. Successful shaping was delivered using masks, wide flow impeding backstops and thinner flow separating tools, provided the non-adhering powder had sufficient room to be cleared from the deposition zone. The thinner tool …
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High Speed Wavelength Tuning of SGDBR Lasers for Optical Coherence Tomography Applications
… into samples under test with a focused infrared light source. Swept wavelength OCT requires a laser light source that is capable of sweeping its wavelength quickly over the entire wavelength range of the tunable laser. Fast sweeping of the laser's wavelength enables real-time imaging of a wide …
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Controlled Fabrication System of Fabry-Perot Optical Fiber Sensors
… of these sensors is the Extrinsic Fabry-Perot interferometer (EFPI) sensor which is inherently simple and requires only modest amount of interface electronics. These advantages make it suitable for many practical applications. Investigating a cost-effective, reliable and repeatable method for …