Electromagnetic forces for an arbitrary optical trapping of a spherical
... missing mechanical measurements in the world of microorganisms and cells that could be correlated to biochemical information. The importance of understanding the optical forces in dielectric beads under different incident beam conditions comes from the fact that they are the natural transducer for f ...
... missing mechanical measurements in the world of microorganisms and cells that could be correlated to biochemical information. The importance of understanding the optical forces in dielectric beads under different incident beam conditions comes from the fact that they are the natural transducer for f ...
Elimination of total internal reflection in GaInN light
... improvement is less than expected. This is possibly attributed to a reduction in the actual height of 2 ⫻ 2 m2 pillars due to less materials being deposited through relatively narrow photoresist openings during the cosputtering. Figure 4共b兲 shows the far-field emission intensity of a reference LED ...
... improvement is less than expected. This is possibly attributed to a reduction in the actual height of 2 ⫻ 2 m2 pillars due to less materials being deposited through relatively narrow photoresist openings during the cosputtering. Figure 4共b兲 shows the far-field emission intensity of a reference LED ...
Confocal microscopy with a volume holographic filter
... The pinhole preceding the detector in a confocal microscope is a shift-variant optical element. On-axis in-focus point-source objects are imaged exactly inside the pinhole and give maximal intensity. An out-offocus object, even when it is on axis, is equivalent to an extended source on the input foc ...
... The pinhole preceding the detector in a confocal microscope is a shift-variant optical element. On-axis in-focus point-source objects are imaged exactly inside the pinhole and give maximal intensity. An out-offocus object, even when it is on axis, is equivalent to an extended source on the input foc ...
Lecture Notes
... each with width x. Each zone acts as a source of Huygens wavelets. Now these zones can be superimposed at the screen to obtain the intensity as a function of , the angle to the central axis. To find the net electric field E (intensity E2) at point P on the screen, we need the phase relationshi ...
... each with width x. Each zone acts as a source of Huygens wavelets. Now these zones can be superimposed at the screen to obtain the intensity as a function of , the angle to the central axis. To find the net electric field E (intensity E2) at point P on the screen, we need the phase relationshi ...
6.1 Characteristics Because VCSELs emit from the top surface of the
... and vertical-emitters, such as Vertical Surface Emitting Lasers (VCSELs). When edge-emitters are used in optical fibercommunication systems, they incorporate a rear facet photodiode to provide a means to monitor the laser output, as this output varies with temperature. In today’s optical networks, ...
... and vertical-emitters, such as Vertical Surface Emitting Lasers (VCSELs). When edge-emitters are used in optical fibercommunication systems, they incorporate a rear facet photodiode to provide a means to monitor the laser output, as this output varies with temperature. In today’s optical networks, ...
Total Internal Reflection Fluorescence
... emission filters. With the TIR mirror, adjust the direction of the illumination beam away from vertical until the transmission of light through the chamber is no longer visible. At this point the light is totally internally reflected. Dilute the beads in water so that individual microspheres can eas ...
... emission filters. With the TIR mirror, adjust the direction of the illumination beam away from vertical until the transmission of light through the chamber is no longer visible. At this point the light is totally internally reflected. Dilute the beads in water so that individual microspheres can eas ...
Sub-wavelength grating for enhanced ring resonator biosensor
... scale [2, 3] for optical multiplexing [4], modulation [5], and biosensing [6]. While the large index contrast among the silicon waveguide, substrate, and cladding, helps to confine and guide the light, a portion of its electric field extends outside the waveguide as an evanescent field. This field i ...
... scale [2, 3] for optical multiplexing [4], modulation [5], and biosensing [6]. While the large index contrast among the silicon waveguide, substrate, and cladding, helps to confine and guide the light, a portion of its electric field extends outside the waveguide as an evanescent field. This field i ...
Direct observation of light focusing by single photoreceptor cell nuclei
... reaches the outer segments of the photoreceptors. Their exact function is still debated and there are arguments speaking for both the improvement of spatial vision [12] and for their role in colour vision [13–16] but it is certain that their raison d’être lies in optical processing of light before ...
... reaches the outer segments of the photoreceptors. Their exact function is still debated and there are arguments speaking for both the improvement of spatial vision [12] and for their role in colour vision [13–16] but it is certain that their raison d’être lies in optical processing of light before ...
Dispersion staining
The optical properties of all liquid and solid materials change as a function of the wavelength of light used to measure them. This change as a function of wavelength is called the dispersion of the optical properties. The graph created by plotting the optical property of interest by the wavelength at which it is measured is called a dispersion curve.The dispersion staining is an analytical technique used in light microscopy that takes advantage of the differences in the dispersion curve of the refractive index of an unknown material relative to a standard material with a known dispersion curve to identify or characterize that unknown material. These differences become manifest as a color when the two dispersion curves intersect for some visible wavelength. This is an optical staining technique and requires no stains or dyes to produce the color. Its primary use today is in the conformation of the presence of asbestos in construction materials but it has many other applications.