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 14 of 14 for “"Optical Alignment"”.
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An optical alignment transfer system for tracking dim targets
Thesis (M. S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1987.
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A spectroscopic smartphone biosensor for use in point-of-care diagnostic applications
… A custom cradle was developed to maintain optical alignment allowing for the diffraction, and therefore spectrometric analysis, of light transmitted either directly through a sample or via an intermediary optical biosensor. Demonstration of the instrument is provided with both an …
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Design of a cam and follower linear actuator for satellite optical systems
Optical systems for satellites are used to image and track the physical environment of earth from space. Where the optical system images can be controlled through the rotation and movement of the optical system. Optical alignment is achieved though linear actuators, which constrain different …
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Investigation of polymer waveguides for fully embedded board-level optoelectronic interconnects
… to conventional PCB fabrication process, ease of optical alignment and packaging. High performance polymer waveguide with 45 degree micro mirror coupler is one key component to enable all these advantages. The performance analyses indicate that the polymer waveguide can provide low loss link for …
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Optomechanical design, analysis, and testing of the nanosatellite optical downlink experiment
… the amount of data desired. Free Space Optical (FSO) communication systems offer an alternative to traditional RF systems that can offer data rates more than an order of magnitude faster than RF communication while using less power and mass. This thesis describes the optomechanical …
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Telescopes and Techniques for the High-Resolution Characterisation of Exoplanets
… of my research is in developing SUPER-SHARP, an optical alignment technology for use in future large aperture unfolding space telescopes. Such facilities and technologies are needed for conducting the high spatial resolution observations required for characterising Earth-like exoplanets. In this …
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New photonic imaging systems for biomedical applications
… by means of phosphorescent probes and optical microscopy has been increasingly used in biological and medical research. O2 imaging by PLIM is gaining popularity as it can provide an accurate, quantitative, and calibration-free mapping of O2 concentration in complex biological samples …
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Development of optical systems and imaging analyses for hyperspectral microscopy and 3D super-resolution imaging
… with the use of a single objective lens. The optical layout of this light sheet microscope, the optical alignment procedures, the instrumentation, and the system calibration are given in this section.
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Advanced Prototypes of the Aerosol Limb Imager
… validating the performance of state-of-the-art optical technologies on a high-altitude balloon observatory. The instrument pairs an extended range acousto-optic tunable filter with a liquid crystal polarization rotator to capture spectrally resolved polarimetric imagery of the atmospheric limb. …
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On the development and application of a photon counting imaging system for broad spectrum luminescence analysis
… incorporating both thermal and multi-source optical stimulation, and providing flexible facilities for the optical filtering of signals, was designed and constructed. Capable of high quantum efficiency, low-noise imaging from infrared to near UV (~ 1050 - ~ 200 nm), the PCIS is based on a …
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On the development and application of a photon counting imaging system for broad spectrum luminescence analysis
… incorporating both thermal and multi-source optical stimulation, and providing flexible facilities for the optical filtering of signals, was designed and constructed. Capable of high quantum efficiency, low-noise imaging from infrared to near UV (~ 1050 - ~ 200 nm), the PCIS is based on a …
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The atom field ion microscope: Fundamental principles of operation
… and control of the sample down to ~ 200 K, and optical alignment of the sample with the mass spectrometer, eliminating all aiming difficulties in time-of-flight measurements. Then, the physical principles essential to the operation of the Atom Probe, field ionization and time-offlight mass …
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A system dynamics approach to user independence in high speed atomic force microscopy
… more than 10 frames/second. Additionally, bulky optical components for sensing cantilever deflection and low bandwidth actuators constrain the AFM's potential observations, and the increasing instrument complexity requires operators skilled in optical alignment and controller tuning. Recent …
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Advancing optical interconnects: Exploring low-loss 3D photonic waveguides, loop mirrors, and distributed Bragg reflectors
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01