Technical Digest Post-Deadline Papers
... triangular grating. The grating is made of Al and the pitch is 10 λ. Both axes are the groove depth and incidence angle. ...
... triangular grating. The grating is made of Al and the pitch is 10 λ. Both axes are the groove depth and incidence angle. ...
Towards noninvasive glucose sensing using
... pathlength. This simple linear relationship is exploited for the glucose monitoring problem in the only transparent tissue in the body, specifically the eye. Chapter 15 of this monograph describes the exciting research in developing a glucose sensor by polarimetric measurements through the aqueous h ...
... pathlength. This simple linear relationship is exploited for the glucose monitoring problem in the only transparent tissue in the body, specifically the eye. Chapter 15 of this monograph describes the exciting research in developing a glucose sensor by polarimetric measurements through the aqueous h ...
STED Microscopy
... • illumination of the sample; • interaction of the illuminating light with the sample; • detection of the light emitted by the sample. In the far field of fluorescence microscopes, illumination and detection are both ruled by diffraction, as described by Eq. (10.1). The key to achieving diffractionunl ...
... • illumination of the sample; • interaction of the illuminating light with the sample; • detection of the light emitted by the sample. In the far field of fluorescence microscopes, illumination and detection are both ruled by diffraction, as described by Eq. (10.1). The key to achieving diffractionunl ...
2-2-1 Pulsed Laser Deposition of Thin Films
... Fe2O3 thin film has been prepared by various methods such as chemical vapor deposition, sol- gel method, and pulsed laser deposition. In this study pulsed laser deposition technique was used. One of the most important and enabling characteristics in PLD is the ability to realize stoichiometric trans ...
... Fe2O3 thin film has been prepared by various methods such as chemical vapor deposition, sol- gel method, and pulsed laser deposition. In this study pulsed laser deposition technique was used. One of the most important and enabling characteristics in PLD is the ability to realize stoichiometric trans ...
Optical Resonators and Mode Matching
... interferometer. Optical resonator along with optical gain are the basic elements of every laser, optical resonators are used in sensors such as the laser gyroscope, and they are used extensively in optical precision measurements, to name merely a few applications. Indeed the optical resonator plays ...
... interferometer. Optical resonator along with optical gain are the basic elements of every laser, optical resonators are used in sensors such as the laser gyroscope, and they are used extensively in optical precision measurements, to name merely a few applications. Indeed the optical resonator plays ...
A mobile, high-precision atom-interferometer and its
... (GAIN) project has been started to meet this requirement and to provide best possible accuracy at the same time. It aims to realize an alternative to other types of gravimeters and to combine important qualities such as high sensitivity and absolute accuracy in one instrument. The GAIN sensor is bas ...
... (GAIN) project has been started to meet this requirement and to provide best possible accuracy at the same time. It aims to realize an alternative to other types of gravimeters and to combine important qualities such as high sensitivity and absolute accuracy in one instrument. The GAIN sensor is bas ...
Properties of a 4Pi confocal fluorescence microscope
... in ethanol and mounted between two cover slides. This sample provides an edge along the optical axis. A saturated solution of Nile Blue was used to produce a good signal-to-noise-ratio (SNR). A transmission loss along a distance of 5 Am was below the detection limit. The sample was placed between th ...
... in ethanol and mounted between two cover slides. This sample provides an edge along the optical axis. A saturated solution of Nile Blue was used to produce a good signal-to-noise-ratio (SNR). A transmission loss along a distance of 5 Am was below the detection limit. The sample was placed between th ...
MEMS Based Heavy Metal Detector Inas Raafat Ramsis
... symmetrically two semi Gaussian beam is introduced using V shape mirror. The design is fully integrated and can operate in the Infrared and visible region. The analysis shows that, a minimum resolution of 9nm at a wavelength of 1.45μm and a mechanical displacement of 160μm is achievable. Unlike the ...
... symmetrically two semi Gaussian beam is introduced using V shape mirror. The design is fully integrated and can operate in the Infrared and visible region. The analysis shows that, a minimum resolution of 9nm at a wavelength of 1.45μm and a mechanical displacement of 160μm is achievable. Unlike the ...
Fluorescence of coumarins and xanthenes after two
... Fluorescence emission after two-photon absorption of coumarins and xanthenes in an alcoholic solution was measured in the tuning range of a femtosecond-pulsed titanium–sapphire laser 1750–840 nm2. Xanthenes, which have a low one-photon absorption in the near UV, show a higher fluorescence signal aft ...
... Fluorescence emission after two-photon absorption of coumarins and xanthenes in an alcoholic solution was measured in the tuning range of a femtosecond-pulsed titanium–sapphire laser 1750–840 nm2. Xanthenes, which have a low one-photon absorption in the near UV, show a higher fluorescence signal aft ...
Adaptive Speckle Imaging Interferometry, a new technique for a
... speed-up this sampling process, in addition to introducing methods to correct for insufficient time-averaging [6]. In the cell-scanning technique [7] and the two cells technique [8] (or its rotating-frosty-glass variant [9]) a point-like detector is illuminated sequentially by different speckles, ei ...
... speed-up this sampling process, in addition to introducing methods to correct for insufficient time-averaging [6]. In the cell-scanning technique [7] and the two cells technique [8] (or its rotating-frosty-glass variant [9]) a point-like detector is illuminated sequentially by different speckles, ei ...
PHOTONIC CRYSTALS WITH ACTIVE ORGANIC MATERIALS by
... quantities are: L=gain medium thickness; Abs=absorption of the sample at the pump wavelength; λ0=center emission wavelength; Pout /Pin=Efficiency referenced to the incident power; Pout/Pin(absorbed)=Efficiency referenced to the absorbed power. .... 90 Table 3-2. Efficiency of various samples with C1 ...
... quantities are: L=gain medium thickness; Abs=absorption of the sample at the pump wavelength; λ0=center emission wavelength; Pout /Pin=Efficiency referenced to the incident power; Pout/Pin(absorbed)=Efficiency referenced to the absorbed power. .... 90 Table 3-2. Efficiency of various samples with C1 ...
Fatimah Final Thesis
... Metal chalcogenides represent a large class of compounds and many examples of metal sulfides, selenides and tellurides are known. Although oxygen also is a group 16 element, the term chalcogenide only refers to metal salts containing atoms of the heavier group 16 elements S, Se and Te in varieties o ...
... Metal chalcogenides represent a large class of compounds and many examples of metal sulfides, selenides and tellurides are known. Although oxygen also is a group 16 element, the term chalcogenide only refers to metal salts containing atoms of the heavier group 16 elements S, Se and Te in varieties o ...
A Michelson interferometric technique for measuring refractive index
... Light from a Helium Neon source S (wavelength of 633nm) is deflected through a mirror M3 and strikes the beam splitter B. The beam splitter is a half-silvered glass plate (silvered on the back side) which reflects half of the light toward mirror M2 and transmits half of the light (but the entire cro ...
... Light from a Helium Neon source S (wavelength of 633nm) is deflected through a mirror M3 and strikes the beam splitter B. The beam splitter is a half-silvered glass plate (silvered on the back side) which reflects half of the light toward mirror M2 and transmits half of the light (but the entire cro ...
Optimal pupil size in the human eye for axial resolution
... determined that the pupil size that offered the best lateral resolution was typically between 2 and 3 mm in diameter. Studies since that time have confirmed this finding.3–5 What has not been studied on a theoretical level is the effect of wave aberrations on the axial resolution of the eye. Axial r ...
... determined that the pupil size that offered the best lateral resolution was typically between 2 and 3 mm in diameter. Studies since that time have confirmed this finding.3–5 What has not been studied on a theoretical level is the effect of wave aberrations on the axial resolution of the eye. Axial r ...
INFLUENCE OF OPTICAL PROPERTIES AND FIBERSEPARATION ON LASER DOPPLER FLOWMETRY
... thickness of 20-22 µm. Each of these discs were separated from each other by a static layer (approximately 95 µm of thickness), containing four pieces of static structure with different optical properties. These pieces were located at the same radial distance from the centre of the tissue phantom, w ...
... thickness of 20-22 µm. Each of these discs were separated from each other by a static layer (approximately 95 µm of thickness), containing four pieces of static structure with different optical properties. These pieces were located at the same radial distance from the centre of the tissue phantom, w ...
Measurement and correction of aberrations in light and electron
... 1.1 We want to image the brain To many people the brain is the most fascinating organ of the human body, and much of its function still escapes our understanding. Since fundamental advances in understanding are often brought about by the availability of new techniques, our aim is not only to study t ...
... 1.1 We want to image the brain To many people the brain is the most fascinating organ of the human body, and much of its function still escapes our understanding. Since fundamental advances in understanding are often brought about by the availability of new techniques, our aim is not only to study t ...
Thermal and electrical properties of - Ruhr
... representing a continuous energy dissipation [Mandelis, 2001]. Thermal waves were used first by A. Angström in the mid 19th century. In 1861 Ångström [Ångström, 1861] had reported determination of the thermal diffusivity of the long copper bar by means of detection and interpretation of the periodic ...
... representing a continuous energy dissipation [Mandelis, 2001]. Thermal waves were used first by A. Angström in the mid 19th century. In 1861 Ångström [Ångström, 1861] had reported determination of the thermal diffusivity of the long copper bar by means of detection and interpretation of the periodic ...
High-Power Diode Lasers under External Optical Feedback
... For better understanding, the laser beam is represented by a green line. The investigated laser diodes are conduction cooled by a Peltier element which is mounted on a water cooled copper block. The base plate temperature of the diodes is fixed to 20°C. The emitted laser beam is collimated by an asp ...
... For better understanding, the laser beam is represented by a green line. The investigated laser diodes are conduction cooled by a Peltier element which is mounted on a water cooled copper block. The base plate temperature of the diodes is fixed to 20°C. The emitted laser beam is collimated by an asp ...
Three-Dimensional Simulation of Vertical-Cavity Surface
... The actual value can be easily estimated by multiplying the reflectivity coefficients of single interfaces for lossless layers, however, it reaches a maximum if absorption is present. Therefore it is essential to use materials with large enough index contrast to achieve the necessary feedback level. A ...
... The actual value can be easily estimated by multiplying the reflectivity coefficients of single interfaces for lossless layers, however, it reaches a maximum if absorption is present. Therefore it is essential to use materials with large enough index contrast to achieve the necessary feedback level. A ...
Coherent manipulation of the internal state of an atomic gas
... sense: they are characterized by a high propagation velocity, can be modulated up to high frequencies, and are relatively robust against decoherence. However it is not easy either to store them or to have some interaction among them. For these tasks, material media (atoms, ions, molecules, quantum-d ...
... sense: they are characterized by a high propagation velocity, can be modulated up to high frequencies, and are relatively robust against decoherence. However it is not easy either to store them or to have some interaction among them. For these tasks, material media (atoms, ions, molecules, quantum-d ...
Measuring the spatiotemporal electric field of
... To measure Eunk共兲 using SEA TADPOLE, we couple the reference and unknown pulses into two identical fibers. The output ends of the fibers are placed close together, so that when the light diverges from them, both beams are collimated with the same spherical lens (focal length f). Because the fibers ...
... To measure Eunk共兲 using SEA TADPOLE, we couple the reference and unknown pulses into two identical fibers. The output ends of the fibers are placed close together, so that when the light diverges from them, both beams are collimated with the same spherical lens (focal length f). Because the fibers ...
Inducing Vortices in a Bose-Einstein Condensate using light beams
... past years. Through the development of new, more advanced experimental techniques, more and more control and knowledge about the systems under observation is gained. This allows comparison with theory to so far unreached precision. Celebrated experimental successes of yesterday, such as the Magneto- ...
... past years. Through the development of new, more advanced experimental techniques, more and more control and knowledge about the systems under observation is gained. This allows comparison with theory to so far unreached precision. Celebrated experimental successes of yesterday, such as the Magneto- ...
The mechanics of adhesion polymers and their
... Bacterial resistance to antibiotics is increasing at a high rate in both developing and developed countries. To circumvent the problem of drug-resistant bacterial pathogens, we need to develop new effective methods, substances, and materials that can disarm and prevent them from causing infections. ...
... Bacterial resistance to antibiotics is increasing at a high rate in both developing and developed countries. To circumvent the problem of drug-resistant bacterial pathogens, we need to develop new effective methods, substances, and materials that can disarm and prevent them from causing infections. ...
Light amplificated by stimulated emission of radiation
... The pump intensity must be sufficiently high. Lasers are often pumped with intensities of the order of the saturation intensity of the laser transition, but fourlevel lasers can also be operated with lower pump intensities. Depending on the geometry, there can be more or less stringent requirements ...
... The pump intensity must be sufficiently high. Lasers are often pumped with intensities of the order of the saturation intensity of the laser transition, but fourlevel lasers can also be operated with lower pump intensities. Depending on the geometry, there can be more or less stringent requirements ...
sensors Chemical Sensing Using Fiber Cavity Ring-Down Spectroscopy
... volumes of tens to hundreds of milliliters. Measurements on liquid samples require either filling the entire cavity with liquid [7,8] or placing the sample into a part of the optical cavity, e.g., contained by a cuvette [9-12], or in a free flowing liquid sheet [13,14]. In the latter experiments the ...
... volumes of tens to hundreds of milliliters. Measurements on liquid samples require either filling the entire cavity with liquid [7,8] or placing the sample into a part of the optical cavity, e.g., contained by a cuvette [9-12], or in a free flowing liquid sheet [13,14]. In the latter experiments the ...