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 9 of 9 for “"infrared photon"”.
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Mechanisms of multiple infrared photon absorption and dissociation
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1980.
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Infrared Photon Initiated Conformer Interconversion, Fourier Transform Microwave Spectroscopy of Hydrogen Bonded Trimers, and Study of Conformer Cooling in Supersonic Expansions
… in methyl vinyl ether (methyl nitrite) than IR photon energies, IR fluorescence spectra showed conformational interconversion occurred (did not occur). For the first time, well defined energy in collisionless conditions was deposited in a ground electronic state molecule with subsequent …
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Spatial Localization and Temporal Analysis of Optical Property Fluctuations by Multiplexed Near -Infrared Photon Density Waves in Turbid Media: In Vitro and in Vivo Studies
Recently much attention has been given to the study of the processes in the human brain that lead to the changing of the optical parameters that characterize the tissue, measured by our frequency-domain instrumentation. These processes have been divided into two main categories with different …
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Spatial localization and temporal analysis of optical property fluctuations by multiplexed near-infrared photon density waves in turbid media: In vitro and in vivo studies
In recent years the application of near infrared non-invasive methods for medical diagnostics and clinical studies has grown rapidly. The ease of use, low cost and portability of these methods is a clear advantage over other techniques such as MRI. The limitations in detection of optical property …
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Quantum information applications of frequency upconversion
… combining a bright “escort” beam with a signal photon inside of a periodically poled lithium niobate (PPLN) crystal, we are able to achieve near unit conversion efficiency. We use this conversion process to create high-efficiency infrared single-photon detectors by upconverting infrared photons …
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Gallium-based Ultraviolet Nanoplasmonics
… are restricted to the visible and near infrared photon energies due to the limitations of the surface plasmon resonance energies of the most commonly used plasmonic metals: Au and Ag. Plasmonic applications in ultraviolet (UV) are of great interest because Raman scattering sections are …
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Development of the Visible Light Photon Counter for Applications in Quantum Information Science
<p>The visible light photon counter (VLPC) is a high quantum efficiency (QE), Si-based, single-photon detector with high gain, low-noise multiplication, low timing jitter, and photon number resolution. While the VLPC has high QE in the visible wavelengths, the QE in the ultraviolet and infrared is …
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Multidimensional fiber quantum light sources and their applications
… processes in optical fibers that can create photon pairs correlated in spatio-spectral degrees of freedom. Utilizing spatial light modulators, we show control over individual spontaneous four-wave mixing processes through precise beam shaping of the pump spatial mode. Employing stimulated …
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Efficient superconducting-nanowire single-photon detectors and their applications in quantum optics
Superconducting-nanowire single-photon detectors (SNSPDs) are an emerging technology for infrared photon counting and detection. Their advantages include good device efficiency, fast operating speed, low dark-count rate, low timing jitter, free running mode, and no afterpulsing. The challenges to …