super-resolved fluorescence microscopy
... real limitation but this method is very difficult to use on living cells. The length-scale of the E. coli cell is about 1,000 nm (1 µm), i.e. larger than but of similar magnitude as the diffraction limit (Fig. 1). This explains why in the past it has been difficult to image details of the internal s ...
... real limitation but this method is very difficult to use on living cells. The length-scale of the E. coli cell is about 1,000 nm (1 µm), i.e. larger than but of similar magnitude as the diffraction limit (Fig. 1). This explains why in the past it has been difficult to image details of the internal s ...
A multi interface total .. internal reflection based electro .. optic
... electro-optic effect, multiple total internaI reflection interfaces are used to direct a beam to one of three output ports. The electro-optic effect is an incredibly fast effect, and bulk electro-optic switches can change state as fast as the electric field can change. ...
... electro-optic effect, multiple total internaI reflection interfaces are used to direct a beam to one of three output ports. The electro-optic effect is an incredibly fast effect, and bulk electro-optic switches can change state as fast as the electric field can change. ...
1. Introduction
... occurs if the two photons are indistinguishable in all degrees of freedom, i.e. the photons have the same wavelength, polarization and spatio-temporal mode. In such a case the first two possibilities - when both photons are transmitted (Fig.1a) or reflected (Fig.1b) - cannot be distinguished from on ...
... occurs if the two photons are indistinguishable in all degrees of freedom, i.e. the photons have the same wavelength, polarization and spatio-temporal mode. In such a case the first two possibilities - when both photons are transmitted (Fig.1a) or reflected (Fig.1b) - cannot be distinguished from on ...
Full-angle Negative Reflection with An Ultrathin Acoustic
... Metasurfaces, the quasi 2D metamaterials composed by elaborately arranged artificial scatters of subwavelength geometrical size, have shown powerful wavefront manipulation capabilities over the past few years. Based on the idea of sampling the desired wavefront and replacing the pixels with appropr ...
... Metasurfaces, the quasi 2D metamaterials composed by elaborately arranged artificial scatters of subwavelength geometrical size, have shown powerful wavefront manipulation capabilities over the past few years. Based on the idea of sampling the desired wavefront and replacing the pixels with appropr ...
Introduction to Optics
... Process and results: a) Place the light source on the optical table, and turn it on. Then, place the diaphragm at the front slit of the light source (keep the lateral slits closed). Place the Newton prism only a few centimetres from the slit. Then, place the object a little further away, and as ...
... Process and results: a) Place the light source on the optical table, and turn it on. Then, place the diaphragm at the front slit of the light source (keep the lateral slits closed). Place the Newton prism only a few centimetres from the slit. Then, place the object a little further away, and as ...
Focal shift of silicon microlen array in mid
... Focal properties of the MLAs were experimentally studied on a horizontal "microscope'' system. The silicon surface, with MLAs on it, was illuminated using collimated plane MIR wave emitting from a standard blackbody with band pass filter (4.25 ± 0.25 μm). The focal spot behind the microlens was imag ...
... Focal properties of the MLAs were experimentally studied on a horizontal "microscope'' system. The silicon surface, with MLAs on it, was illuminated using collimated plane MIR wave emitting from a standard blackbody with band pass filter (4.25 ± 0.25 μm). The focal spot behind the microlens was imag ...
Wavefront retrieval of amplified femtosecond
... shown in Sect. 4. Measurements are compared to the wavefront retrieved by other techniques and/or to numerical simulations. Sect. 5 is devoted to the conclusions of the work. The goals and limitations of the proposed technique are discussed there. 2. Theoretical background SHG is nowadays a very use ...
... shown in Sect. 4. Measurements are compared to the wavefront retrieved by other techniques and/or to numerical simulations. Sect. 5 is devoted to the conclusions of the work. The goals and limitations of the proposed technique are discussed there. 2. Theoretical background SHG is nowadays a very use ...
Observation of collective excitation of two individual atoms in the
... Figure 2 | Experimental details. a, Two rubidium 87 atoms are trapped in two tightly focused dipole traps (not shown). The quantization axis is set by a 9 G magnetic field. The fluorescence of each trap is collected on two separated photon-counting avalanche photodiodes (APD). We can also image the ...
... Figure 2 | Experimental details. a, Two rubidium 87 atoms are trapped in two tightly focused dipole traps (not shown). The quantization axis is set by a 9 G magnetic field. The fluorescence of each trap is collected on two separated photon-counting avalanche photodiodes (APD). We can also image the ...
Influence of clearing solutions osmolarity on the optical properties of
... different concentrations) leads to the sufficient decrease of scattering properties of blood in visible and NIR spectral range. The refractive index ofblood plasma at administration ofthe glucose solution becomes close to refractive index of erythrocytes, and thus decreasing scattering coefficient a ...
... different concentrations) leads to the sufficient decrease of scattering properties of blood in visible and NIR spectral range. The refractive index ofblood plasma at administration ofthe glucose solution becomes close to refractive index of erythrocytes, and thus decreasing scattering coefficient a ...
Quantum imaging and information
... chapters 2 and 3. Experiments involving ghost imaging relying on spatial entanglement are described in chapters 4 and 5. In all of these chapters, relevant theoretical descriptions are given along with discussions of the results and their meaning. The research is experimental in nature and the light ...
... chapters 2 and 3. Experiments involving ghost imaging relying on spatial entanglement are described in chapters 4 and 5. In all of these chapters, relevant theoretical descriptions are given along with discussions of the results and their meaning. The research is experimental in nature and the light ...
Optical Comms 2004 (Summer)
... Overall then it is apparent that there is significant trade-off between a high acceptance angle and a large fibre bandwidth. The impact of this trade-off in an actual optical fibre system is important, for good coupling efficiency for optical sources such as lasers or particularly LEDs a high fibre ...
... Overall then it is apparent that there is significant trade-off between a high acceptance angle and a large fibre bandwidth. The impact of this trade-off in an actual optical fibre system is important, for good coupling efficiency for optical sources such as lasers or particularly LEDs a high fibre ...
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... found that even a single layer of these materials can give sufficient, albeit feeble, contrast to allow a successful identification of a few micron-sized crystallites among thicker flakes scattered around them. We have calculated the contrast of few InSe single layers exfoliated onto SiO2/Si substra ...
... found that even a single layer of these materials can give sufficient, albeit feeble, contrast to allow a successful identification of a few micron-sized crystallites among thicker flakes scattered around them. We have calculated the contrast of few InSe single layers exfoliated onto SiO2/Si substra ...
Confocal optical microscopy
... Light may fall on the object from the side opposite the observer, as shown in figure 3, or it may be epitaxial, which means that it comes from the observation side. Epitaxial illumination is used for viewing opaque and fluorescent objects. An opaque material such as a semiconductor chip has to be se ...
... Light may fall on the object from the side opposite the observer, as shown in figure 3, or it may be epitaxial, which means that it comes from the observation side. Epitaxial illumination is used for viewing opaque and fluorescent objects. An opaque material such as a semiconductor chip has to be se ...
Recent progress in investigating optical rogue waves
... situations, gain competition between input noise components can frustrate the formation of a soliton, leading to rare low amplitude events in a pulse train [15]. Under other experimental conditions, rogue waves may arise through soliton collisions, which can produce events with high red-shifted ener ...
... situations, gain competition between input noise components can frustrate the formation of a soliton, leading to rare low amplitude events in a pulse train [15]. Under other experimental conditions, rogue waves may arise through soliton collisions, which can produce events with high red-shifted ener ...
Two electric field Monte Carlo models of coherent backscattering of
... coherent backscattering (CBS), is a coherent wave phenomenon in which light rays traveling through time-reversed paths (i.e., two light rays that travel through the same sequence of optical events but in the opposite directions relative to each other) interfere constructively to create an angular in ...
... coherent backscattering (CBS), is a coherent wave phenomenon in which light rays traveling through time-reversed paths (i.e., two light rays that travel through the same sequence of optical events but in the opposite directions relative to each other) interfere constructively to create an angular in ...
table of content - Photonics North
... The goal is to paint a picture of the international optics-photonics landscape in 2014. ...
... The goal is to paint a picture of the international optics-photonics landscape in 2014. ...
Radiative Transfer Theory - UCL Department of Geography
... In this case, the integration is much simpler. Notice now that the scattered field has an approximate k02 dependence (i.e. 1/2) though this is in the long wavelength limit – there are other important terms in the integration. Note also that the complex permittivity determines the strength of the ...
... In this case, the integration is much simpler. Notice now that the scattered field has an approximate k02 dependence (i.e. 1/2) though this is in the long wavelength limit – there are other important terms in the integration. Note also that the complex permittivity determines the strength of the ...
PCF Based Sensor with High Sensitivity, High
... size [9] or by distorting the shape of the air hole (elliptical air holes) [9,10] around the PCF core. To our knowledge, structures introduced by Kim et al. [10] have demonstrated that relatively large birefringence in the order of 10´3 –10´2 can be achieved with PCFs structures. It is important to ...
... size [9] or by distorting the shape of the air hole (elliptical air holes) [9,10] around the PCF core. To our knowledge, structures introduced by Kim et al. [10] have demonstrated that relatively large birefringence in the order of 10´3 –10´2 can be achieved with PCFs structures. It is important to ...
The Balance Detector
... The response near zero of balance detectors 1 through 5 were measured, and the results are shown in Figure 2. The error bars on the figure represent the in-quadraturecombined range of the fluctuations of the two readings on the power meter, as judged by the human making the measurements. While the r ...
... The response near zero of balance detectors 1 through 5 were measured, and the results are shown in Figure 2. The error bars on the figure represent the in-quadraturecombined range of the fluctuations of the two readings on the power meter, as judged by the human making the measurements. While the r ...
Deconvolution Microscopy
... Most frequently, shift invariance does not apply in the axial direction. Other sources of aberration, including stigmatism, coma and curvature of the field, are negligible and well corrected in high-quality objectives. Axial shift variance results from the use of objectives under non-optimal conditi ...
... Most frequently, shift invariance does not apply in the axial direction. Other sources of aberration, including stigmatism, coma and curvature of the field, are negligible and well corrected in high-quality objectives. Axial shift variance results from the use of objectives under non-optimal conditi ...
Optical tweezers
Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.