near-field optical experiments
Development of a controlled environment near-field optical microscope for organic thin film studies
... A difficulty faced in such studies is that organic films are very sensitive to atmospheric oxygen and light. Al- though quite stable when kept in the dark or in a nitrogen environment, rapid photo-oxidization or ...
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Scanning near-field optical microscopy on dense random assemblies of metal nanoparticles
... electrical field distributions on top of the nanopar- ticles are shown in figure 7 for the resonance wavelength of 700 nm flanked by 550 and 850 ...electric field distributions can be considered as ...
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Coca López, Nicolás (2018): Confocal and antenna-enhanced microscopy and spectroscopy of graphene. Dissertation, LMU München: Fakultät für Chemie und Pharmazie
... antenna’s near-field distribution determines the signal enhancement, and in TENOM experiments, also the spatial resolution and the observed image ...the optical antenna are highly dependent on ...
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NEAR-FIELD OPTICAL MICROSCOPY AND SPECTROSCOPY WITH POINTED PROBES
... these experiments, sample fluores- cence was excited by two-photon absorption using the locally enhanced field at the tip ...initial experiments purposely made use of a nonlinear-optical ...
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Optical impedance matching with scanning near field optical microscopy
... The advantage of using SNOM for such an experiment is that on can easily draw parallels between SNOM probes and microwave waveguides. Besides, one could bring the SNOM probe to a desired location on a sample containing ...
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Apertureless scanning near-field optical microscopy: a comparison between homodyne and heterodyne approaches
... background optical fields that are not re- lated to the field scattered by the tip end can be ...tip field enhancement at the tip apex. 20 In many experiments, these methods have permit- ted ...
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Theory of probing a photonic crystal with transmission near-field optical microscopy
... the optical modes of the sample, field propagation from the source through the sample to the detector, and collection of the transmitted light by the ...the experiments are ...the ...
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Apertureless near-field optical microscopy: Differences between heterodyne interferometric and non-interferometric images.
... This paper uses simulations to better understand the influence of the detection scheme in aSN OM , and in particular differences between non-interferometric and heterodyne (or equivalent) interferometric schemes. We have ...
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Imaging of InGaN inhomogeneities using visible apertureless. near-field scanning optical microscope
... basic optical components for near-field measurements was presented ...these experiments, although it provides better discrimination against topographic ...the near-field signal ...
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Near-field optical microscopy based on microfabricated probes
... with field localization at the tip ...other experiments we would expect that rather high forces would be necessary to break up a continuous metal layer as it is found at the ...
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Apertureless near field optical microscopy for fluorescence imaging
... Some experiments can be proposed to differentiate between the two effects. Fluorescence quen- ching could be identified by taking fluorescence lifetime measurements using a pulsed laser and measuring the delay ...
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Study of shear force as a distance regulation mechanism for scanning near field optical microscopy
... R 8 2 R cos u , where u is the phase angle between the de- tected oscillation and the voltage excitation, R 8 is the initial amplitude of the tip, and R is the instantaneous amplitude. The reason for this can be seen by ...
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Absorbance Modulation Optical Lithography: Simulating the Performance of an Adaptable Absorbance Mask in the Near Field
... The Dill papers [Dill 1975, Dill 1975a, Dill 1975b] introduced a linear model for photo- resist exposure and development and mark the start of the computational lithography. Since these early models many more assumptions ...
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The arrangement of field experiments
... revolution in field experimentation, for by 1935 many national agricultural research.. organisations were using Fisher's ideas.[r] ...
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Polarization-modulation near-field optical microscope for quantitative local dichroism mapping
... What is necessary for a profitable use of polarization contrast NSOM is to identify probes where the near-field polarization direction turns according to the polarization coupled into the fiber. Only such ...
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The application of scanning near field optical imaging to the study of human sperm morphology
... SNOM optical transmission image (Figure 4D) shows that along the longitudinal axis the midpiece region appears brighter than the rest of the principal part of the ...in optical contrast is indi- cated by ...
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Investigation of erbium dopant distribution in silica optical fibers with fluorescence-based measurements using a near-field scanning microscope
... in optical fibers, it is expected that other REs may be examined in a similar manner provided that certain spectroscopic character- istics can be directly linked with the distribution of the inves- tigated RE ...
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Intragrain Defect Characterization Of Solar Grade Silicon Using Near-Field Scanning Optical Microscopy
... I would first like to thank my advisory committee chair, Dr. George Rozgonyi, for giving me the opportunity to work in his group. He has been exceedingly patient on this time intensive project, built from the ground up. ...
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Magneto-Optic Spectroscopy and Near-Field Optical Coupling in Nanoparticle Composite Materials
... A wide range of magnetic materials have been studied over the last several decades. Magneto-optical materials can be divided into two main groups. The first includes metals and metal alloys, which are only ...
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Measurement of the local optical phase and amplitude in photonic devices using scanning near field microscopy
... electric field in the plane normal to the sur- face and provide a 2-dimensional cross section of the propagating ...electric field magnitude, the scan starts ...
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