All-angle negative refraction and imaging in a visible region
... that negative refraction can exist without a negative refractive index. So far, demonstration of negative refraction and imaging in bulk materials at visible frequencies still remains very challenging [16-19]. As NIMs rely on resonance, they are usually accompanied by significant losses, especially ...
... that negative refraction can exist without a negative refractive index. So far, demonstration of negative refraction and imaging in bulk materials at visible frequencies still remains very challenging [16-19]. As NIMs rely on resonance, they are usually accompanied by significant losses, especially ...
Multi-photon absorption and third-order
... ranged from 38 to 123 µm for different wavelengths. As shown, α3 and α4 present nonlinear absorption coefficients for 3PA and 4PA. The peak intensity I00 at the sample is determined as I00 = laser_power / [(πω02) × pulse_repetitions × pulse_width] × 40%, due to Fresnel reflection and back scattering ...
... ranged from 38 to 123 µm for different wavelengths. As shown, α3 and α4 present nonlinear absorption coefficients for 3PA and 4PA. The peak intensity I00 at the sample is determined as I00 = laser_power / [(πω02) × pulse_repetitions × pulse_width] × 40%, due to Fresnel reflection and back scattering ...
Biology 177: Principles of Modern Microscopy
... • Technique that dominates most single molecule imaging approaches ...
... • Technique that dominates most single molecule imaging approaches ...
MEMS-based handheld confocal microscope for in
... aligned for transmission (p-mode) through the beamsplitter, and coupled into a second fiber for delivery to an avalanche photodiode (APD) detector. This polarization based detection ensures that reflections from any surfaces prior to the quarter wave plate on the illumination path do not get coupled ...
... aligned for transmission (p-mode) through the beamsplitter, and coupled into a second fiber for delivery to an avalanche photodiode (APD) detector. This polarization based detection ensures that reflections from any surfaces prior to the quarter wave plate on the illumination path do not get coupled ...
Application of Fast Light in Gravitational Wave Detection with ... In this paper, we study several designs for interferometric...
... and experimentally16,17 that the enhancement factor scales as the inverse of the group index. However, for realistic system parameters, the value of S can still be as much as 105 times larger than its empty-cavity value. I. Optical Configurations for Gravitational Wave Detectors Advanced LIGO is des ...
... and experimentally16,17 that the enhancement factor scales as the inverse of the group index. However, for realistic system parameters, the value of S can still be as much as 105 times larger than its empty-cavity value. I. Optical Configurations for Gravitational Wave Detectors Advanced LIGO is des ...
Jonesresub
... topic in physical optics that is the subject of much fundamental research today. It is an important dimension in studies of light in all of its complexity, as well as in the interaction of light fields with matter. It is also an important component in applications, such as metrology, sensing, commun ...
... topic in physical optics that is the subject of much fundamental research today. It is an important dimension in studies of light in all of its complexity, as well as in the interaction of light fields with matter. It is also an important component in applications, such as metrology, sensing, commun ...
Phase zone plates for x rays and the extreme uv - X
... plates both in their light collection, and in their signal-to-noise characteristics. Materials with suitable optical and mechanical properties exist throughout most of the 1-800-A wavelength range for their construction. Imperfections in fabrication, such as incorrect plate thickness, sloping zone e ...
... plates both in their light collection, and in their signal-to-noise characteristics. Materials with suitable optical and mechanical properties exist throughout most of the 1-800-A wavelength range for their construction. Imperfections in fabrication, such as incorrect plate thickness, sloping zone e ...
Part I : Theory of two
... • The optical absorption in reduced crystals (due to intrinsic defects) decreases • The intensity of X-ray-induced luminescence increases by several orders of magnitude while other related properties, such as width and energy of the band, also change abruptly. • The absorption edge shows a blueshift ...
... • The optical absorption in reduced crystals (due to intrinsic defects) decreases • The intensity of X-ray-induced luminescence increases by several orders of magnitude while other related properties, such as width and energy of the band, also change abruptly. • The absorption edge shows a blueshift ...
Precision interferometer
... contemporary tool for testing optical components. It has made it possible to create optical systems that are accurate to within a fraction of a wavelength. ➤ NOTE: The PASCO Precision Interferometer is not designed for actual component testing in the Twyman-Green mode. It is intended only to provide ...
... contemporary tool for testing optical components. It has made it possible to create optical systems that are accurate to within a fraction of a wavelength. ➤ NOTE: The PASCO Precision Interferometer is not designed for actual component testing in the Twyman-Green mode. It is intended only to provide ...
Microbolometer_sensor
... free from aberrations, its performance is limited solely by diffraction, and it is referred to as diffraction limited. In calculating diffraction, we simply need to know the focal length(s) and aperture diameter(s); we do not consider other lens-related factors such as shape or index of refraction. ...
... free from aberrations, its performance is limited solely by diffraction, and it is referred to as diffraction limited. In calculating diffraction, we simply need to know the focal length(s) and aperture diameter(s); we do not consider other lens-related factors such as shape or index of refraction. ...
Physic
... 1. Elliptically polarised light is produced when O-ray and E-ray having equal amplitude superimpose over each other and have a path difference of l/4 2. Circularly polarised light is produced when O-ray and E-ray having equal amplitude superimpose over each other and have a path difference of l/4 ...
... 1. Elliptically polarised light is produced when O-ray and E-ray having equal amplitude superimpose over each other and have a path difference of l/4 2. Circularly polarised light is produced when O-ray and E-ray having equal amplitude superimpose over each other and have a path difference of l/4 ...
PDF
... enhance the overall performance of the phased array. This can be done by apodization; that is, the amplitude profile is trimmed by some nonuniform window function. For example, Fig. 1(c) illustrates an apodized 8 × 8 optical phased array with a Gaussian window where the emission amplitude of the opt ...
... enhance the overall performance of the phased array. This can be done by apodization; that is, the amplitude profile is trimmed by some nonuniform window function. For example, Fig. 1(c) illustrates an apodized 8 × 8 optical phased array with a Gaussian window where the emission amplitude of the opt ...
10-draft-EPS-238
... inelastic part of Rayleigh scattering. The rotational Raman transitions usually have selection rules J 2 (as opposed to the usual J 1 for electric dipole transitions). J 2 Stokes transitions; I0 loses energy to molecule. J 2 anti-Stokes transitions; I0 gains energy from molec ...
... inelastic part of Rayleigh scattering. The rotational Raman transitions usually have selection rules J 2 (as opposed to the usual J 1 for electric dipole transitions). J 2 Stokes transitions; I0 loses energy to molecule. J 2 anti-Stokes transitions; I0 gains energy from molec ...
Quantitative prediction of the modulation behavior of twisted nematic liquid
... Twisted nematic liquid crystal displays (LCD) have been widely used as spatial light modulators (SLM) and programmable optical devices [1,2]. In general they produce coupled amplitude and phase modulation versus the applied voltage [3]. This coupling effect deteriorates the response of ideal optical ...
... Twisted nematic liquid crystal displays (LCD) have been widely used as spatial light modulators (SLM) and programmable optical devices [1,2]. In general they produce coupled amplitude and phase modulation versus the applied voltage [3]. This coupling effect deteriorates the response of ideal optical ...
Soliton Interaction in Fiber Bragg Gratings: Optical AND Gate Formation
... A Bragg soliton is a solitary wave that propagates within an FBG as the result of balancing dispersion and SPM from the Bragg reflections. These solitons propagate without any significant change in shape and can be transmitted into other fibers. As compared to typical fiber solitons, Bragg solitons ...
... A Bragg soliton is a solitary wave that propagates within an FBG as the result of balancing dispersion and SPM from the Bragg reflections. These solitons propagate without any significant change in shape and can be transmitted into other fibers. As compared to typical fiber solitons, Bragg solitons ...
High efficiency high power blue laser by resonant doubling in PPKTP.
... Fig. 2.3. The sinc2 (x) function .......................................................................................... 17 Fig. 2.4. Dependence of the refractive index on light propagation direction and polarization in negative uniaxial crystals. Phasematching is achieved at point A. Figure has ...
... Fig. 2.3. The sinc2 (x) function .......................................................................................... 17 Fig. 2.4. Dependence of the refractive index on light propagation direction and polarization in negative uniaxial crystals. Phasematching is achieved at point A. Figure has ...
Experiment Guide - Industrial Fiber Optics
... a shadow is created. Under special circumstances it can be shown that an obstruction actually causes diffractive effects related to the wave properties of light. Figure 1 shows what occurs when an obstruction with an opening in it is placed in the path of a wave front. When the wave passes through t ...
... a shadow is created. Under special circumstances it can be shown that an obstruction actually causes diffractive effects related to the wave properties of light. Figure 1 shows what occurs when an obstruction with an opening in it is placed in the path of a wave front. When the wave passes through t ...
here - Optoelectronics Research Centre
... 1 mm and its imaging execution is very slow. Confocal microscopy instead does not allow morphological tissue imaging and lacks millimetre penetration depth. Confocal microscopy has better image resolution at 1 µm but it currently suffers from a limited penetration depth of 200 µm. OCT uses the corre ...
... 1 mm and its imaging execution is very slow. Confocal microscopy instead does not allow morphological tissue imaging and lacks millimetre penetration depth. Confocal microscopy has better image resolution at 1 µm but it currently suffers from a limited penetration depth of 200 µm. OCT uses the corre ...
Theoretical study on Brillouin fiber laser sensor Omer Kotlicki, Jacob Scheuer,
... present and analyze a Brillouin based fiber laser implementation of a WLC ultra-sensitive sensor. Compared to the concepts presented previously [14,15], the novelty here is in all-fiber implementation of the WLC enhanced sensor, and the use of Brillouin gain for realizing the ring laser necessary fo ...
... present and analyze a Brillouin based fiber laser implementation of a WLC ultra-sensitive sensor. Compared to the concepts presented previously [14,15], the novelty here is in all-fiber implementation of the WLC enhanced sensor, and the use of Brillouin gain for realizing the ring laser necessary fo ...
MICROWAVE MANIPULATION OF COLD ATOMS
... microwave near field distribution around a coplanar wave-guide integrated on an atom chip. The main novelty so far in my results is the ability to map at a single shot, microwave fields generated from an horn antenna at near and far fields. Since my setup is completely different and has no atomchip ...
... microwave near field distribution around a coplanar wave-guide integrated on an atom chip. The main novelty so far in my results is the ability to map at a single shot, microwave fields generated from an horn antenna at near and far fields. Since my setup is completely different and has no atomchip ...
Cross-polarized angular emission patterns from lens
... Terahertz time-domain spectroscopy (THz-TDS) is a versatile technique for the generation and detection of radiation in the submillimeter range. It is by now well established that femtosecond optical pulses can be used to generate a spatially coherent beam of terahertz radiation, in the form of singl ...
... Terahertz time-domain spectroscopy (THz-TDS) is a versatile technique for the generation and detection of radiation in the submillimeter range. It is by now well established that femtosecond optical pulses can be used to generate a spatially coherent beam of terahertz radiation, in the form of singl ...
Intensity Interferometry toward high resolution
... the technique is described later together with some future prospects. To make the reading easier, Figure 1.6 at the end of this section, summarises the information of the historical development of stellar interferometry into a timeline scheme. This figure was inspired by a similar figure in [3]. Hip ...
... the technique is described later together with some future prospects. To make the reading easier, Figure 1.6 at the end of this section, summarises the information of the historical development of stellar interferometry into a timeline scheme. This figure was inspired by a similar figure in [3]. Hip ...
Phase-contrast X-ray imaging
Phase-contrast X-ray imaging (PCI) or phase-sensitive X-ray imaging is a general term for different technical methods that use information concerning changes in the phase of an X-ray beam that passes through an object in order to create its images. Standard X-ray imaging techniques like radiography or computed tomography (CT) rely on a decrease of the X-ray beam's intensity (attenuation) when traversing the sample, which can be measured directly with the assistance of an X-ray detector. In PCI however, the beam's phase shift caused by the sample is not measured directly, but is transformed into variations in intensity, which then can be recorded by the detector.In addition to producing projection images, PCI, like conventional transmission, can be combined with tomographic techniques to obtain the 3D distribution of the real part of the refractive index of the sample. When applied to samples that consist of atoms with low atomic number Z, PCI is more sensitive to density variations in the sample than conventional transmission-based X-ray imaging. This leads to images with improved soft tissue contrast.In the last several years, a variety of phase-contrast X-ray imaging techniques have been developed, all of which are based on the observation of interference patterns between diffracted and undiffracted waves. The most common techniques are crystal interferometry, propagation-based imaging, analyzer-based imaging, edge-illumination and grating-based imaging (see below).