High-resolution retinal microscopy using MEMS
... made using microelectromechanical (MEMS) systems technology has enabled rapid development of adaptive optics in several new applications. In this paper, the design and testing of a retinal imaging system is detailed, with an emphasis on the adaptive optical components and their performance. Retinal ...
... made using microelectromechanical (MEMS) systems technology has enabled rapid development of adaptive optics in several new applications. In this paper, the design and testing of a retinal imaging system is detailed, with an emphasis on the adaptive optical components and their performance. Retinal ...
Optical Analogues for Massless Dirac Particles and Conical
... as shown in Fig. 3(a). The parameters of the writing procedure can be found in [24]. The sample consists of 40 sinusoidally shaped waveguides with alternating distances between adjacent lattice sites equal to d1 ¼ 13:9 m and d2 ¼ 18:1 m, that are written into a 10 cm long fused silica wafer. The c ...
... as shown in Fig. 3(a). The parameters of the writing procedure can be found in [24]. The sample consists of 40 sinusoidally shaped waveguides with alternating distances between adjacent lattice sites equal to d1 ¼ 13:9 m and d2 ¼ 18:1 m, that are written into a 10 cm long fused silica wafer. The c ...
Metal Nanoparticles for Microscopy and Spectroscopy
... correspond to electromagnetic waves in the visible and UV range. Above the plasma frequency, a metal is not strongly reflective, but changes into a transparent material because the electrons cannot respond fast enough to screen the field. In most metals, the plasma frequency is in the ultraviolet, ma ...
... correspond to electromagnetic waves in the visible and UV range. Above the plasma frequency, a metal is not strongly reflective, but changes into a transparent material because the electrons cannot respond fast enough to screen the field. In most metals, the plasma frequency is in the ultraviolet, ma ...
Optical Coherence Tomography as a diagnostic tool
... such as following grafting of engineered tissues into a host tissue [11]. Of particular importance to us is the use of OCT in dermatology, where OCT has been used to visualize the different layers of the skin such as stratum corneum of glabrous skin in palmoplantar locations, the epidermis and the u ...
... such as following grafting of engineered tissues into a host tissue [11]. Of particular importance to us is the use of OCT in dermatology, where OCT has been used to visualize the different layers of the skin such as stratum corneum of glabrous skin in palmoplantar locations, the epidermis and the u ...
Region segmentation and parallel processing for creating large
... hologram, which are emitted from point sources of light spreading over the surface of the virtual object. This method is very simple, but there is a big problem in its computation time. The computation time of this method is proportional to the product of the number of point sources and sampling poi ...
... hologram, which are emitted from point sources of light spreading over the surface of the virtual object. This method is very simple, but there is a big problem in its computation time. The computation time of this method is proportional to the product of the number of point sources and sampling poi ...
Demonstration of Optical Rotatory Dispersion of Sucrose
... in the region of wavelength λ, the optical rotation is a sum over such expressions. When the specific rotation of a compound decreases with increasing wavelength as in eq 3 and there are no local extrema in the curve, the optical rotatory dispersion (ORD) curve is called a plain curve. Many articles ...
... in the region of wavelength λ, the optical rotation is a sum over such expressions. When the specific rotation of a compound decreases with increasing wavelength as in eq 3 and there are no local extrema in the curve, the optical rotatory dispersion (ORD) curve is called a plain curve. Many articles ...
Design of illumination and projection optics for projectors with single
... system to steer the light onto and away from the DMD. As shown in Fig. 3, the prism system comprises three transparent prisms, between which there are two air gaps. Total internal reflection 共TIR兲 at the interface between the prism and the air gap is utilized to separate the light bundles by angle. ...
... system to steer the light onto and away from the DMD. As shown in Fig. 3, the prism system comprises three transparent prisms, between which there are two air gaps. Total internal reflection 共TIR兲 at the interface between the prism and the air gap is utilized to separate the light bundles by angle. ...
Polarization - OpenStax CNX
... clouds brighter by contrast. Scattering from other particles, such as smoke or dust, can also polarize light. Detecting polarization in scattered EM waves can be a useful analytical tool in determining the scattering source. There is a range of optical eects used in sunglasses. Besides being Polaro ...
... clouds brighter by contrast. Scattering from other particles, such as smoke or dust, can also polarize light. Detecting polarization in scattered EM waves can be a useful analytical tool in determining the scattering source. There is a range of optical eects used in sunglasses. Besides being Polaro ...
Get
... fabrication time of 10ms (as a 1kHz repetition rate laser was used here). In each case, the inset shows the binary pattern (black/white) that was displayed on the DMD, where white corresponds to laser light, and black to no laser light. The modulated edges on the left and right sides on some of the ...
... fabrication time of 10ms (as a 1kHz repetition rate laser was used here). In each case, the inset shows the binary pattern (black/white) that was displayed on the DMD, where white corresponds to laser light, and black to no laser light. The modulated edges on the left and right sides on some of the ...
[pdf]
... of light in the medium and S 0 (r , ω ) , S1 ( r , ω ) are the monopole and dipole moments of the intensity modulated optical source respectively. From these equations we eliminate the photon flux density and obtain, after a lengthy calculation, the following wave equation involving only the photon ...
... of light in the medium and S 0 (r , ω ) , S1 ( r , ω ) are the monopole and dipole moments of the intensity modulated optical source respectively. From these equations we eliminate the photon flux density and obtain, after a lengthy calculation, the following wave equation involving only the photon ...
Time of flight-photoemission electron microscope for ultrahigh
... Therefore the contrast change becomes weaker in this case as compared to the image series obtained with the IEF mode. Furthermore, it is interesting to note that we observe some bright spots in the PEEM images under 400 nm/60 ps laser excitation. Four prominent crystallites can be distinguished with ...
... Therefore the contrast change becomes weaker in this case as compared to the image series obtained with the IEF mode. Furthermore, it is interesting to note that we observe some bright spots in the PEEM images under 400 nm/60 ps laser excitation. Four prominent crystallites can be distinguished with ...
Soleil-Babinet Compensator
... port. In addition to the cables and connectors, SBC-COMM includes a CD with micrometer LabVIEW drivers and a stand-alone micrometer program. Once the Soleil-Babinet compensator is calibrated at a single wavelength, the software can output the micrometer position required for any retardance at any wa ...
... port. In addition to the cables and connectors, SBC-COMM includes a CD with micrometer LabVIEW drivers and a stand-alone micrometer program. Once the Soleil-Babinet compensator is calibrated at a single wavelength, the software can output the micrometer position required for any retardance at any wa ...
Info Note 804: UV-VIS Nomenclature and Units
... wavelength in a range of ultraviolet or visible regions. Such a spectrum can often be produced directly by a more sophisticated spectrophotometer, or the data can be collected one wavelength at a time by simpler instruments. Wavelength is often represented by the symbol λ. Similarly, for a given sub ...
... wavelength in a range of ultraviolet or visible regions. Such a spectrum can often be produced directly by a more sophisticated spectrophotometer, or the data can be collected one wavelength at a time by simpler instruments. Wavelength is often represented by the symbol λ. Similarly, for a given sub ...
phase retrieval by using transport-of
... For instance, the cell nucleolus (indicating concentrated DNA) is more visible in TIE, especially so with our reconstruction method (see the region inside the circles in Figure 2.(e)). Also, our method produces an image where the nucleus is better resolved compared to the other reconstructions (indi ...
... For instance, the cell nucleolus (indicating concentrated DNA) is more visible in TIE, especially so with our reconstruction method (see the region inside the circles in Figure 2.(e)). Also, our method produces an image where the nucleus is better resolved compared to the other reconstructions (indi ...
Wavelength-tuning interferometry of intraocular distances
... He–Ne laser. Currently, the most promising coherent tunable light sources are semiconductor lasers and solid-state lasers. To achieve laser tuning, the gain margins of the cavity modes have to be rearranged or the frequency of the cavity modes must be shifted. Several techniques such as distributed ...
... He–Ne laser. Currently, the most promising coherent tunable light sources are semiconductor lasers and solid-state lasers. To achieve laser tuning, the gain margins of the cavity modes have to be rearranged or the frequency of the cavity modes must be shifted. Several techniques such as distributed ...
A Coaxial Optical Scanner for Synchronous Acquisition of 3D
... Third and finally, unlike many designs, our use of coaxial devices and descattering allows measuring surface backscattering, which can be an important attribute of appearance. Modulated lighting with a glass slide. While it is common to use digital projectors for modulated lighting, we instead creat ...
... Third and finally, unlike many designs, our use of coaxial devices and descattering allows measuring surface backscattering, which can be an important attribute of appearance. Modulated lighting with a glass slide. While it is common to use digital projectors for modulated lighting, we instead creat ...
Birefringency: Calculation of Refracted Ray Paths in - Giga
... it is included here for the sake of clarity and completeness of this paper. Finally, our main contribution, which is the general isotropic - biaxial anisotropic refraction will be introduced. The solution of the resulting system has only been possible by using numerical techniques (damped Newton met ...
... it is included here for the sake of clarity and completeness of this paper. Finally, our main contribution, which is the general isotropic - biaxial anisotropic refraction will be introduced. The solution of the resulting system has only been possible by using numerical techniques (damped Newton met ...
12. CONFOCAL MICROSCOPY • Confocal microscopy can render
... structures (background) give zero signal. However, practical issues related to dark signals in the detector, limited dynamic range, saturation, and out of focus light , lower the contrast. ...
... structures (background) give zero signal. However, practical issues related to dark signals in the detector, limited dynamic range, saturation, and out of focus light , lower the contrast. ...
lecture_five_2016
... so, we mathematically change unpolarized light into the superposition of two polarized waves whose planes of oscillation are perpendicular to each other. The result is the double-arrow representation of Fig. 5.6 (b), which simplifies drawing of unpolarized light. Actually, light is generally neither ...
... so, we mathematically change unpolarized light into the superposition of two polarized waves whose planes of oscillation are perpendicular to each other. The result is the double-arrow representation of Fig. 5.6 (b), which simplifies drawing of unpolarized light. Actually, light is generally neither ...
CC_A3_C2_photo2_old
... • Replace the mercury vapor lamp an excimer laser source with shorter wavelength emission – ArF – 193 nM – Shorter wavelength than so-called “deep UV” peak of 248nM – F2 Laser – Low output but at 157nM ...
... • Replace the mercury vapor lamp an excimer laser source with shorter wavelength emission – ArF – 193 nM – Shorter wavelength than so-called “deep UV” peak of 248nM – F2 Laser – Low output but at 157nM ...
Fundamental Limit to Linear One-Dimensional Slow Light Structures
... idealized linear dispersion, periodic structures of resonators, validity of group velocity concepts), we have derived a limit compatible with theirs and comparable in form. The limits of Tucker et al. [7] may well be better estimators of the performance of those specific structures, but our point he ...
... idealized linear dispersion, periodic structures of resonators, validity of group velocity concepts), we have derived a limit compatible with theirs and comparable in form. The limits of Tucker et al. [7] may well be better estimators of the performance of those specific structures, but our point he ...
Surface plasmon resonance microscopy
Surface Plasmon Resonance Microscopy (SPRM) is a label free analytical tool that combines the surface plasmon resonance of metallic surfaces with imaging of the metallic surface.The heterogeneity of the refractive index of the metallic surface imparts high contrast images, caused by the shift in the resonance angle.SPRM can achieve a thickness sensitivity of few tenths of nanometer and lateral resolution achieves values of micrometer scale.SPRM is used to characterize surfaces, self-assembled monolayers, multilayer films, metal nanoparticles, oligonucleotides arrays, binding and reduction reactions.Surface Plasmon polaritons are surface electromagnetic waves coupled to oscillating free electrons of a metallic surface that propagate along a metal/dielectric interface.Since polaritons are highly sensitive to small changes in the refractive index of the metallic material,it can be used as a biosensing tool that does not require labeling. SPRM measurements can be made in real-time.Wang and collaborators studied the binding kinetics of membrane proteins in single cells.The experimental setup of an SPRM can be seen in the Figure 1, where an adherent cell is grown on a gold film and placed in an inverted microscope, p-polarized light was used to create the surface plasmons on the gold film and a CCD camera was used to create the SPR image.