Fiber Optic Sensors and Their Applications
... interferometric sensors. Due to the small core size (~4 μm) alignment becomes a critical factor. The SM fibre mentioned above is not truly single mode in that two modes with degenerate polarization states can propagate in the fibre. This can lead to signal interference and noise in the measurement. ...
... interferometric sensors. Due to the small core size (~4 μm) alignment becomes a critical factor. The SM fibre mentioned above is not truly single mode in that two modes with degenerate polarization states can propagate in the fibre. This can lead to signal interference and noise in the measurement. ...
Rejection of two-photon fluorescence background in
... We propose a simple technique to reject out-of-focus TPEF background in scattering tissue. Our technique is based on the use of a deformable mirror to control the phase profile of the laser beam in the back aperture of the focusing objective. While most TPEF applications involving deformable mirrors ...
... We propose a simple technique to reject out-of-focus TPEF background in scattering tissue. Our technique is based on the use of a deformable mirror to control the phase profile of the laser beam in the back aperture of the focusing objective. While most TPEF applications involving deformable mirrors ...
Two-Photon Excited Fluorescence Microscopy - Spectra
... high or the exposure time is too long. This event, termed photobleaching, is caused by photon-induced chemical damage of the molecular structure of the fluorophore. It results in a decrease of signal in fluorescent microscopy. Although photobleaching can be minimized by changing the experimental con ...
... high or the exposure time is too long. This event, termed photobleaching, is caused by photon-induced chemical damage of the molecular structure of the fluorophore. It results in a decrease of signal in fluorescent microscopy. Although photobleaching can be minimized by changing the experimental con ...
Precession optomechanics - EECS @ UMich
... Here we propose a device in which torque, applied by spinning photons that are guided around a horizontal bend, causes mechanical deformation along the vertical direction. We name this effect “precession optomechanics”, since a photon in a waveguide and a precessing rotor will apply similar torque o ...
... Here we propose a device in which torque, applied by spinning photons that are guided around a horizontal bend, causes mechanical deformation along the vertical direction. We name this effect “precession optomechanics”, since a photon in a waveguide and a precessing rotor will apply similar torque o ...
HOLO TEXT
... As stated previously, geometrical optics assumes that light travels in a straight line and in this form is referred to as a ray. There is no concern here with the substance of the light itself; however, there is considerable interest in this field of optics with the effects which differing substance ...
... As stated previously, geometrical optics assumes that light travels in a straight line and in this form is referred to as a ray. There is no concern here with the substance of the light itself; however, there is considerable interest in this field of optics with the effects which differing substance ...
Sample pages 1 PDF
... It is important to recognize that the prism glass is but one of the many considerations that affect image quality. There are excellent older binoculars that use BK7 glass for the prisms and which give a better image quality than many of the modern budget offerings that have “BaK4” printed on their c ...
... It is important to recognize that the prism glass is but one of the many considerations that affect image quality. There are excellent older binoculars that use BK7 glass for the prisms and which give a better image quality than many of the modern budget offerings that have “BaK4” printed on their c ...
Second harmonic generation via total internal reflection quasi
... the input/output polarization of the propagating waves 2. The effective nonlinear d coefficient (deff) can also change sign after reflection depending on the selection of the input/output polarization which will result in an extra phase shift (ξπ) with ξ being 1 or 0 depending on the inversion of de ...
... the input/output polarization of the propagating waves 2. The effective nonlinear d coefficient (deff) can also change sign after reflection depending on the selection of the input/output polarization which will result in an extra phase shift (ξπ) with ξ being 1 or 0 depending on the inversion of de ...
Optical design of reflectionless complex media by
... emerged as a means of designing complex media that can bring about unprecedented control of electromagnetic fields. A transformation optical structure is designed by first applying a form-invariant coordinate transform to Maxwell’s equations, in which part of free space is distorted in some manner. ...
... emerged as a means of designing complex media that can bring about unprecedented control of electromagnetic fields. A transformation optical structure is designed by first applying a form-invariant coordinate transform to Maxwell’s equations, in which part of free space is distorted in some manner. ...
Fluidic Optics - Whitesides Group
... is transparent in the visible range (240 nm – 1100 nm) with an extinction coefficient of < 10-10,25 and has negligible birefringence.26 It is therefore possible to enclose fluidic optical components in PDMS, and couple light through PDMS, with minimal loss due to absorption. Commercially available P ...
... is transparent in the visible range (240 nm – 1100 nm) with an extinction coefficient of < 10-10,25 and has negligible birefringence.26 It is therefore possible to enclose fluidic optical components in PDMS, and couple light through PDMS, with minimal loss due to absorption. Commercially available P ...
Get PDF - OSA Publishing
... meta-molecules. The meta-molecules can also form a periodic lattice (in this case hexagonal), and effectively sample the desired phase profiles simultaneously at two wavelengths. The lattice is subwavelength at both wavelengths of interest; therefore, the nonzero diffraction orders are not excited. ...
... meta-molecules. The meta-molecules can also form a periodic lattice (in this case hexagonal), and effectively sample the desired phase profiles simultaneously at two wavelengths. The lattice is subwavelength at both wavelengths of interest; therefore, the nonzero diffraction orders are not excited. ...
Optical Component Characterization: A Linear Systems Approach
... We have introduced a simple, linear systems formulation of the effect of passive components on a communications signal in an optical fiber. Central to the development is the fact that components can be qualified quickly and precisely by interferometric measurement of the amplitude and phase of the t ...
... We have introduced a simple, linear systems formulation of the effect of passive components on a communications signal in an optical fiber. Central to the development is the fact that components can be qualified quickly and precisely by interferometric measurement of the amplitude and phase of the t ...
Experiments in Optics - Workspace
... diffraction, can become quite mathematically complex. A much simpler case is the so-called farfield diffraction regime in which the plane of observation is very far from the aperture (ideally at infinity) – as seen in Figure 1a. Due to the physical size of optical bench this is not always practical ...
... diffraction, can become quite mathematically complex. A much simpler case is the so-called farfield diffraction regime in which the plane of observation is very far from the aperture (ideally at infinity) – as seen in Figure 1a. Due to the physical size of optical bench this is not always practical ...
Interferometry
Interferometry is a family of techniques in which waves, usually electromagnetic, are superimposed in order to extract information about the waves. Interferometry is an important investigative technique in the fields of astronomy, fiber optics, engineering metrology, optical metrology, oceanography, seismology, spectroscopy (and its applications to chemistry), quantum mechanics, nuclear and particle physics, plasma physics, remote sensing, biomolecular interactions, surface profiling, microfluidics, mechanical stress/strain measurement, and velocimetry.Interferometers are widely used in science and industry for the measurement of small displacements, refractive index changes and surface irregularities. In analytical science, interferometers are used in continuous wave Fourier transform spectroscopy to analyze light containing features of absorption or emission associated with a substance or mixture. An astronomical interferometer consists of two or more separate telescopes that combine their signals, offering a resolution equivalent to that of a telescope of diameter equal to the largest separation between its individual elements.