Experiment Guide - Industrial Fiber Optics
... using a laser, some ordinary household items and a diffraction mosaic. We will start with a basic demonstration of diffraction (light bending around a corner) using a laser and knife (razor) blade edge. Our experiments will then progress to more dramatic visual effects that result from wave interfer ...
... using a laser, some ordinary household items and a diffraction mosaic. We will start with a basic demonstration of diffraction (light bending around a corner) using a laser and knife (razor) blade edge. Our experiments will then progress to more dramatic visual effects that result from wave interfer ...
9.Wave Properties
... The ray of light hits the wall of the fibre and is totally internally reflected when the angle of incidence is greater than the critical angle. The ray of light passes down the optical fibre by repeated total internal reflection. 13 of 28 ...
... The ray of light hits the wall of the fibre and is totally internally reflected when the angle of incidence is greater than the critical angle. The ray of light passes down the optical fibre by repeated total internal reflection. 13 of 28 ...
Lithography In the Top
... (exciplex) 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 ...
... (exciplex) 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 ...
What you will need to remember from year 10…
... • If light goes from a more optically dense medium to a less optically dense one it is refracted away from the normal. Θi < Θr • When the angle of refraction reaches 90o the angle of incidence is known as the critical angle. • Any further increase in the angle of incidence will result in the light b ...
... • If light goes from a more optically dense medium to a less optically dense one it is refracted away from the normal. Θi < Θr • When the angle of refraction reaches 90o the angle of incidence is known as the critical angle. • Any further increase in the angle of incidence will result in the light b ...
ZnO/SiO2 microcavity modulator on silicon Abstract - Paul
... employs planar microcavity (MC) resonators of the type illustrated in Fig. 1(a), which consist of a λ/2 cavity spacer (C) of thickness dc and refractive index nc inserted between two Bragg mirror (BM) stacks of dielectric and simultaneously, piezoelectric λ/4 layers. A surface acoustic wave (SAW) ge ...
... employs planar microcavity (MC) resonators of the type illustrated in Fig. 1(a), which consist of a λ/2 cavity spacer (C) of thickness dc and refractive index nc inserted between two Bragg mirror (BM) stacks of dielectric and simultaneously, piezoelectric λ/4 layers. A surface acoustic wave (SAW) ge ...
Electron diffraction for analysing crystal orientation of thin films
... Figure 3: Three different modes of operation of a TEM: a) High-resolution imaging mode: An incident plane wave scatters elastically according to the different lattice planes and the diffracted beams interfere with each other. This interference pattern may in some cases be interpreted as directly re ...
... Figure 3: Three different modes of operation of a TEM: a) High-resolution imaging mode: An incident plane wave scatters elastically according to the different lattice planes and the diffracted beams interfere with each other. This interference pattern may in some cases be interpreted as directly re ...
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 ...
Geometrical and diffraction optics
... Since the refractive index n = f(LJ), the focal length of a lens = f(LJ) and different wavelengths have different foci. (Mirrors are usually achromatic). ...
... Since the refractive index n = f(LJ), the focal length of a lens = f(LJ) and different wavelengths have different foci. (Mirrors are usually achromatic). ...
WAVE OPTICS Jaan Kalda 1 Basics. Double slit diffraction.
... amplitudes am and a are to be interpreted as x- or y-components of the E- or B-field. It is not important, which quantity is con- Now we can also recover the earlier result (6) regarding the sidered, because as long as there is no double refraction, for positions of the intensity minima (cosine give ...
... amplitudes am and a are to be interpreted as x- or y-components of the E- or B-field. It is not important, which quantity is con- Now we can also recover the earlier result (6) regarding the sidered, because as long as there is no double refraction, for positions of the intensity minima (cosine give ...
Optical path function.
... Æ to focus a beam in a small spot (which is needed for achieving energy and/or spatial resolution) one must accept an increase in the beam divergence High beam divergence along the beamline: Æ large optical devices Æ high costs and low optical qualities With a not brilliant source the spot size can ...
... Æ to focus a beam in a small spot (which is needed for achieving energy and/or spatial resolution) one must accept an increase in the beam divergence High beam divergence along the beamline: Æ large optical devices Æ high costs and low optical qualities With a not brilliant source the spot size can ...
The Resolving Power Of a Microscope and Telescope
... and proteins cannot be imaged. 3. Decreasing the wavelength by using X-rays and gamma rays. While these techniques are used to study inorganic crystals, biological samples are usually damaged by x-rays and hence are not used. The limit set by Abbe’s criterion for optical microscopy cannot be avoided ...
... and proteins cannot be imaged. 3. Decreasing the wavelength by using X-rays and gamma rays. While these techniques are used to study inorganic crystals, biological samples are usually damaged by x-rays and hence are not used. The limit set by Abbe’s criterion for optical microscopy cannot be avoided ...
Introduction to Spectroscopy
... 1800: W. Herschel and J. W. Ritter show that infrared (IR) and ultraviolet (UV) light are part of the spectrum 1814: Joseph Fraunhofer noticed that the sun’s spectrum contains a number of dark lines, developed the diffraction grating 1859: G. Kirchoff obtains spectra of the elements, explains the su ...
... 1800: W. Herschel and J. W. Ritter show that infrared (IR) and ultraviolet (UV) light are part of the spectrum 1814: Joseph Fraunhofer noticed that the sun’s spectrum contains a number of dark lines, developed the diffraction grating 1859: G. Kirchoff obtains spectra of the elements, explains the su ...
Computation of diffraction patterns Part 1
... screen. In the script we have chosen a rectangular array of detection points whose x-coordinates vary between close to 0 and scrnDst and whose y-coordinates vary between -scrnWdth/2 and +scrnWdth/2. III. Note in the script the two lines of code which calculate the field variable E(0). As usual, if y ...
... screen. In the script we have chosen a rectangular array of detection points whose x-coordinates vary between close to 0 and scrnDst and whose y-coordinates vary between -scrnWdth/2 and +scrnWdth/2. III. Note in the script the two lines of code which calculate the field variable E(0). As usual, if y ...
7.8 Polarized light - one more excursion into optics 7.8.1 The
... As is well-known, circularly polarised light can be composed by two sources of light linearly polarised perpendicular to each other, with an appropriate phase difference. 7.8.4 Making circularly polarized light, λ/4 plate It appears appropriate at this point to address some experimental aids for man ...
... As is well-known, circularly polarised light can be composed by two sources of light linearly polarised perpendicular to each other, with an appropriate phase difference. 7.8.4 Making circularly polarized light, λ/4 plate It appears appropriate at this point to address some experimental aids for man ...
Note
... • The observed profile is the convolution of the true line profile with the instrument profile • For high S/N ratio data, Fourier techniques can be used to back out the IP from a spectrum to recover some of the resolution. ...
... • The observed profile is the convolution of the true line profile with the instrument profile • For high S/N ratio data, Fourier techniques can be used to back out the IP from a spectrum to recover some of the resolution. ...
Laboratory 2 Thomas Young and the Wave
... the wavelength of light from the laser is 6328 Angstroms (the red portion of the spectrum). In your experiment, you can thus check the validity of Eq. [4]. Note also that in your experiment, L is the total distance from slit-to-mirror-to-image. CAUTION: Do not look into the laser beam or even at a d ...
... the wavelength of light from the laser is 6328 Angstroms (the red portion of the spectrum). In your experiment, you can thus check the validity of Eq. [4]. Note also that in your experiment, L is the total distance from slit-to-mirror-to-image. CAUTION: Do not look into the laser beam or even at a d ...
20170327_AH_Interference
... Two waves are said to be coherent if they have a constant phase relationship. For two waves travelling in air to have a constant phase relationship, they must have the same frequency and wavelength. At any given point, the phase difference between the two waves will be fixed. For us to see interfere ...
... Two waves are said to be coherent if they have a constant phase relationship. For two waves travelling in air to have a constant phase relationship, they must have the same frequency and wavelength. At any given point, the phase difference between the two waves will be fixed. For us to see interfere ...
Fraunhofer Diffraction
... • If the curvature of the optical waves must be taken into account at the aperture or image plane, then we must use Fresnel (near-field) diffraction theory. • The Huygens-Fresnel principle is used in diffraction theory, in that every point of a given wavefront of light can be considered as a source ...
... • If the curvature of the optical waves must be taken into account at the aperture or image plane, then we must use Fresnel (near-field) diffraction theory. • The Huygens-Fresnel principle is used in diffraction theory, in that every point of a given wavefront of light can be considered as a source ...
Phase space of partially coherent light with discontinuous surfaces
... are separate from the two lines. They result from interference between the two beamlets. The ripple frequency increases with the angle between the two beamlets [12]. When we integrate these ripples over the angular axes, they produce oscillations in the transverse intensity. For a longer propagated ...
... are separate from the two lines. They result from interference between the two beamlets. The ripple frequency increases with the angle between the two beamlets [12]. When we integrate these ripples over the angular axes, they produce oscillations in the transverse intensity. For a longer propagated ...
Experiments in Optics - Workspace
... essential to keep a clear written record in your lab notebook. However, do not spend a long time engrossed in your lab book - never more than 10 minutes at a time - remember this is a practical laboratory, not an exercise in writing. Every 10 or 15 minutes, record what you have done in your book. Wr ...
... essential to keep a clear written record in your lab notebook. However, do not spend a long time engrossed in your lab book - never more than 10 minutes at a time - remember this is a practical laboratory, not an exercise in writing. Every 10 or 15 minutes, record what you have done in your book. Wr ...
H. F. Ghaemi - Department of Physics | Oregon State
... We identify the transmission minima as the result of Wood’s anomaly,11 which was observed in diffraction gratings and occurs when a diffracted order becomes tangent to the plane of the grating. When the order disappears, the light intensity is redistributed among the remaining orders; it has been su ...
... We identify the transmission minima as the result of Wood’s anomaly,11 which was observed in diffraction gratings and occurs when a diffracted order becomes tangent to the plane of the grating. When the order disappears, the light intensity is redistributed among the remaining orders; it has been su ...
The Michelson Interferometer
... plate. This cell is initially evacuated, and air is thereafter allowed to leak back into the cell. As the air leaks back in, the number of fringes that passes the image of the pointer is counted, and the number of fringes which have passed the pointer until one atmosphere is attained is noted. This ...
... plate. This cell is initially evacuated, and air is thereafter allowed to leak back into the cell. As the air leaks back in, the number of fringes that passes the image of the pointer is counted, and the number of fringes which have passed the pointer until one atmosphere is attained is noted. This ...
1489_1.pdf
... use a laser-ultrasonics, which means an ultrasonic wave generation by a laser pulse and its detection by an optical interferometer [2]. Recently, a few techniques to size surfacebreaking cracks have been proposed by using laser-generated surface wave [3-5], although these can be useful only for the ...
... use a laser-ultrasonics, which means an ultrasonic wave generation by a laser pulse and its detection by an optical interferometer [2]. Recently, a few techniques to size surfacebreaking cracks have been proposed by using laser-generated surface wave [3-5], although these can be useful only for the ...
Lab
... goes to zero at some angle between 0° and 90°, the reflected light at that angle is linearly polarized with its electric field vectors perpendicular to the plane of incidence. The angle at which this occurs is called the polarizing angle or the Brewster angle. At other angles the reflected light is ...
... goes to zero at some angle between 0° and 90°, the reflected light at that angle is linearly polarized with its electric field vectors perpendicular to the plane of incidence. The angle at which this occurs is called the polarizing angle or the Brewster angle. At other angles the reflected light is ...
Diffraction grating
In optics, a diffraction grating is an optical component with a periodic structure, which splits and diffracts light into several beams travelling in different directions. The emerging coloration is a form of structural coloration. The directions of these beams depend on the spacing of the grating and the wavelength of the light so that the grating acts as the dispersive element. Because of this, gratings are commonly used in monochromators and spectrometers.For practical applications, gratings generally have ridges or rulings on their surface rather than dark lines. Such gratings can be either transmissive or reflective. Gratings which modulate the phase rather than the amplitude of the incident light are also produced, frequently using holography.The principles of diffraction gratings were discovered by James Gregory, about a year after Newton's prism experiments, initially with items such as bird feathers. The first man-made diffraction grating was made around 1785 by Philadelphia inventor David Rittenhouse, who strung hairs between two finely threaded screws. This was similar to notable German physicist Joseph von Fraunhofer's wire diffraction grating in 1821.Diffraction can create ""rainbow"" colors when illuminated by a wide spectrum (e.g., continuous) light source. The sparkling effects from the closely spaced narrow tracks on optical storage disks such as CD's or DVDs are an example, while the similar rainbow effects caused by thin layers of oil (or gasoline, etc.) on water are not caused by a grating, but rather by interference effects in reflections from the closely spaced transmissive layers (see Examples, below). A grating has parallel lines, while a CD has a spiral of finely-spaced data tracks. Diffraction colors also appear when one looks at a bright point source through a translucent fine-pitch umbrella-fabric covering. Decorative patterned plastic films based on reflective grating patches are very inexpensive, and are commonplace.