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 140 for “"Multiphoton"”.
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Multiphoton Endoscopy
Multiphoton microscopy has the potential to be a versatile tool for clinical disease diagnosis and treatment, providing numerous benefits over current practices involving the histopathological analysis of biopsies. Specifically, multiphoton excitation has the unique ability to generate fluorescence …
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Differential multiphoton microscopy
2010 Spring.
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Multiphoton correlations and emitters
… a challenging task. With the emergence of multiphoton physics, the horizon of quantum light sources is wider. The tools to identify and classify multiphoton emission are still in development. We present the methods to study the dynamics and correlations of some candidate systems that have …
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Investigating multiphoton phenomena using nonlinear dynamics
… thesis, we report our theoretical analyses on multiphoton ionization of Rydberg atoms exposed to strong microwave fields and the dissociation of diatomic molecules exposed to bichromatic lasers using nonlinear dynamical tools. This thesis is composed of three subtopics. In the first subtopic, …
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Defining cellular microenvironments using multiphoton lithography
… using the high resolution, 3D capabilities of multiphoton lithography. Here, site-specific photochemistry using multiphoton excitation is applied to the photocrosslinking of proteins, providing the means to organize bioactive species into well-defined 3D microenvironments. Further, conditions …
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Compact Femtosecond Lasers for Multiphoton Imaging
Multiphoton imaging currently is one of the main development directions in Laser Scanning Microscopy. A simplified way to assess suitability of a given laser for MPI applications is a figure of merit (FOM) approach based on peak power and average power of the particular excitation laser used. The …
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Multiphoton laser spectroscopy of indium monoiodide
The laser induced fluorescence (LIF) and the multiphoton ionization (MPI) spectra of indium monoiodide have been obtained at ultraviolet and visible wavelengths. Fluorescence from excited indium atoms at 451.1 nm (6s $\sp2$S$\sb{1/2}$ $\to$ 5p $\sp2$P$\sb{3/2}$) is produced by the multiphoton …
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Multifocal Multiphoton Microscopy for Neurobiological Imaging
… of therapeutics for their correction. Today, multiphoton excitation fluorescence microscopy is the method of choice for in vivo neuronal imaging with its inherent 3D resolution, minimal photo-damage, and excellent penetration depth. The study of neuronal interactions on dendritic arbor …
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Extending imaging depth of multiphoton microscopy
Two-photon excitation fluorescence microscopy has capability of deep tissue imaging with biological samples. However, because of the inhomogeneity of the refractive index in biological samples, the wavefront of the excitation light is often distorted. Due to the distortion of the wavefront, the …
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MULTIPHOTON ABSORPTION IN MONOLAYER TRANSITION METAL DICHALCOGENIDES
… evidence for developing sensitive infrared multiphoton detectors for nano-photonics.
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Photophysics of infrared multiphoton absorption by thiophosgene
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1983.
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Multiphoton lithography of mechanically and functionally tunable hydrogels
… techniques available to researchers, multiphoton lithography (MPL) has generated considerable interest in the scientific community. By allowing researchers to localize photochemistry to a femtoliter volume, MPL has permitted the fabrication of intricate, 3D microstructures from a range …
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Multiphoton ionization photoelectron spectroscopy of iodine-bearing molecules
Multiphoton ionization of iodine-bearing molecules has been studied, under collision-free conditions, by observing the kinetic energy of the ejected photoelectrons. These experiments have demonstrated that, for photoionization of I$\sb2$, CF$\sb3$I and HI at 532 nm, the scission of the R-I bond …
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Multiphoton microscopy for stain-free slide-free histopathology
… advantages, conventional methods for label-free multiphoton imaging are burdened by limited contrast and efficiency of individual modalities as well as complex laser systems, which hinders this technology from wider application in biomedicine. This thesis developed a fiber-based single-excitation …
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Functional Biological Spectroscopy and Multiphoton Imaging Using Endogenous Optical Contrast
… tissue, two model systems were investigated with multiphoton microscopy in order to evaluate processes important in angiogenesis and ovarian carcinogenesis research. Starting with an in vitro model of angiogenesis, the individual intracellular and extracellular optical signals were combined for …
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Probing topographical influences on biofilm formation using dynamic-mask multiphoton lithography
… attachment to surfaces using dynamic-mask multiphoton lithography. Multiphoton lithography is an inherently three-dimensional fabrication technique. When combined with the dynamic-mask-based technology developed in the Shear laboratory, it allows for rapid prototyping of 3D structures of …
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CORRELATED PHOTON PAIRS AND MULTIPHOTON STATES FROM A COLD ATOMIC ENSEMBLE
… providing direct evidence of genuine multiphoton states. Building on this foundation, the thesis further explores photon-triplet generation via composite spontaneous six-wave mixing, offering a pathway toward scalable multiphoton quantum light sources compatible with atomic quantum …
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Multiphoton Contributions to Far Infrared Generation in Optically Pumped Deuterium-Oxide
Made available in DSpace on 2015-05-13T15:22:17Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 8004253.PDF: 4877249 bytes, checksum: 9e1751f6cc98f26d5fb40c5d468a0b93 (MD5) Previous issue date: 1979
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Multiphoton ionization of hydrogen iodide and molecular iodine using photoelectron spectroscopy
… time-of-flight photoelectron spectroscopy using multiphoton ionization techniques. At a pumping wavelength of 532 nm, it was concluded that dissociation due to the intermediate repulsive valence states is very strong for both HI and I$\sb2.$ For HI, the dissociative valence states correlate with …
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Investigating transport of charged nanoparticles by multiphoton fluorescence correlation spectroscopy (MPFCS)
… This thesis describes the development of a multiphoton fluorescence correlation spectroscopy (MPFCS) system and its utilization to probe the effect of charge on the diffusion of quantum dot (QD) nanocrystals in collagen and collagen-hyaluronan (HA) composite gel models of human colon …
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