wavelength dependence of the light-induced index
... ly h(ow the response has shifted. The Mach-Zehnder inte] rferometer fabricated here has an unbalance that is an )propriate for carrying out measurements in the 700- -1400-nm wavelength range. In the experiment, a UV light pulse from a Lumonics 'Series TE-260-2 excimer laser is impinged upon one arm ...
... ly h(ow the response has shifted. The Mach-Zehnder inte] rferometer fabricated here has an unbalance that is an )propriate for carrying out measurements in the 700- -1400-nm wavelength range. In the experiment, a UV light pulse from a Lumonics 'Series TE-260-2 excimer laser is impinged upon one arm ...
Atmospheric Monitoring for High Energy Gamma Ray Cherenkov
... Cherenkov telescopes, like MAGIC, HESS and CTA, the atmospheric monitoring is of high importance. The UV Cherenkov radiation, emitted during the extended air showers, is scattered and partially absorbed in the atmosphere. In the event reconstruction procedure the above effects have to be taken into ...
... Cherenkov telescopes, like MAGIC, HESS and CTA, the atmospheric monitoring is of high importance. The UV Cherenkov radiation, emitted during the extended air showers, is scattered and partially absorbed in the atmosphere. In the event reconstruction procedure the above effects have to be taken into ...
Resolution and Sampling Considerations
... between 4 to 5 microns/pixel, so this is within the range desired in the example above. However, a Nyquist sampling frequency of 2 samples per cycle is a theoretical minimum sampling rate to resolve an object of 1 cycle in size. In reality, many more samples are usually necessary to actually “resol ...
... between 4 to 5 microns/pixel, so this is within the range desired in the example above. However, a Nyquist sampling frequency of 2 samples per cycle is a theoretical minimum sampling rate to resolve an object of 1 cycle in size. In reality, many more samples are usually necessary to actually “resol ...
Lens Types
... from the object to the lens, z2 is the length from the lens to the focal point, and f is the focal length the equation to find the magnification is , M=-(z2/z1) You would place a sensor at the focal point to get a focused image Convex have a + focal length (image is on the other side of light) Conca ...
... from the object to the lens, z2 is the length from the lens to the focal point, and f is the focal length the equation to find the magnification is , M=-(z2/z1) You would place a sensor at the focal point to get a focused image Convex have a + focal length (image is on the other side of light) Conca ...
Iterative reconstruction algorithm for optoacoustic imaging
... The techniques used to transform the information contained in the optoacoustic signals into images depends on the complexity of the target structures. Single, static detectors are used for layered samples.4 –7 More complicated structures can be imaged by scanning a focused acoustic transducer toget ...
... The techniques used to transform the information contained in the optoacoustic signals into images depends on the complexity of the target structures. Single, static detectors are used for layered samples.4 –7 More complicated structures can be imaged by scanning a focused acoustic transducer toget ...
Advances in diamond-turned surfaces enable unique cost
... These techniques permit the production of imaging spectrometers that incorporate aluminum based optical components, including mirrors, gratings and slits, mounted into precision machined aluminum housing. The result is a lightweight, mechanically robust, and thermally stable system. Figure 11 shows ...
... These techniques permit the production of imaging spectrometers that incorporate aluminum based optical components, including mirrors, gratings and slits, mounted into precision machined aluminum housing. The result is a lightweight, mechanically robust, and thermally stable system. Figure 11 shows ...
Broadly tunable, low timing jitter, high repetition rate optoelectronic
... A recent OECG scheme utilizing a narrow-linewidth (∼10 kHz) laser locked to a modulator in a resonant cavity yielded a timing jitter as low as 6.4 fs when paired ultra-stable RF source [8]. The use of a resonant configuration enhances the bandwidth of the OFC, facilitating shorter pulse durations, bu ...
... A recent OECG scheme utilizing a narrow-linewidth (∼10 kHz) laser locked to a modulator in a resonant cavity yielded a timing jitter as low as 6.4 fs when paired ultra-stable RF source [8]. The use of a resonant configuration enhances the bandwidth of the OFC, facilitating shorter pulse durations, bu ...
Hollow Retroreflectors Promote Precision Optical Alignment
... total length defined by three bounces. This path depends on the location of the incoming beam with respect to the apex of the device. To better understand the process, it helps to examine an idealized situation with only two bounces. Consider a case where the retroreflector is essentially a roof mir ...
... total length defined by three bounces. This path depends on the location of the incoming beam with respect to the apex of the device. To better understand the process, it helps to examine an idealized situation with only two bounces. Consider a case where the retroreflector is essentially a roof mir ...
Telescopes
... The atmosphere blocks X-rays and gamma rays from reaching sea level. Some UV light gets through. Some infrared (IR) light gets through. High altitude observatories like Mauna Kea are good sites for optical and IR astronomy because they are halfway to space. Half of the Earth's atmosphere is below y ...
... The atmosphere blocks X-rays and gamma rays from reaching sea level. Some UV light gets through. Some infrared (IR) light gets through. High altitude observatories like Mauna Kea are good sites for optical and IR astronomy because they are halfway to space. Half of the Earth's atmosphere is below y ...
Full Article
... or both—in which the optical power of the eye is diminished. One of the reasons silicone is used in ophthalmic applications is because of the opportunity it affords for RI adjustment according to different requirements for repairing or enhancing sight. In this way, silicone is accommodating to the f ...
... or both—in which the optical power of the eye is diminished. One of the reasons silicone is used in ophthalmic applications is because of the opportunity it affords for RI adjustment according to different requirements for repairing or enhancing sight. In this way, silicone is accommodating to the f ...
ENG PHYS 4S03 ENG PHYS 4 I O
... 1. If you are seeking relief for missed academic work because of an absence lasting less than five days in duration, you must use the McMaster Student Absence Form. 2. Absences lasting more than five days must be reported to the Associate Dean’s Office (JHE-A214) and appropriate documentation must b ...
... 1. If you are seeking relief for missed academic work because of an absence lasting less than five days in duration, you must use the McMaster Student Absence Form. 2. Absences lasting more than five days must be reported to the Associate Dean’s Office (JHE-A214) and appropriate documentation must b ...
Spectral phase conjugation via temporal imaging
... demonstrated with spectral and temporal holography [16–19], three-wave mixing in χ (2) nonlinear media [20,21], cross-phase modulation [22,23], two-photon absorption [24], and photon echo measurements in inhomogeneously broadened media [25,26]. While most of these SPC implementations have focused on ...
... demonstrated with spectral and temporal holography [16–19], three-wave mixing in χ (2) nonlinear media [20,21], cross-phase modulation [22,23], two-photon absorption [24], and photon echo measurements in inhomogeneously broadened media [25,26]. While most of these SPC implementations have focused on ...
Design and Simulation of DPSS Laser with SHG for Material
... are optical thickness for each layer and refractive index for each layer coating and substrate [5] 4. Results and Discussion Reflection was taken as function of the wavelength for different coating materials for both rear and coupling mirror, as shown in the two parts below. Figures (4-11) shows the ...
... are optical thickness for each layer and refractive index for each layer coating and substrate [5] 4. Results and Discussion Reflection was taken as function of the wavelength for different coating materials for both rear and coupling mirror, as shown in the two parts below. Figures (4-11) shows the ...
Light Sources * II The Laser
... • When the driving current suddenly jumps from low (I1 < Ith) to high (I2 > Ith) , (step input), there is a finite time before the laser will turn on • This delay limits bit rate in digital systems • Can you think of any solution? I 2 I1 td sp ln ...
... • When the driving current suddenly jumps from low (I1 < Ith) to high (I2 > Ith) , (step input), there is a finite time before the laser will turn on • This delay limits bit rate in digital systems • Can you think of any solution? I 2 I1 td sp ln ...
Lecture 14 (11/13/2006) Analytical Mineralogy Part 1: Nature of
... Because n is related to light velocity, which is related to wavelength ((v = ·), different wavelengths of light will have different refraction indicies within a particular substance Illuminating a mineral with white light may thus lead ...
... Because n is related to light velocity, which is related to wavelength ((v = ·), different wavelengths of light will have different refraction indicies within a particular substance Illuminating a mineral with white light may thus lead ...
O A
... In an effort to produce graduates with a balanced and an excellent university, the curriculum should be made through the university censorship Philosophy of Education, Malaysia Education Act (1996), the international requirements and educational psychology. Thus, university curricula must have a vis ...
... In an effort to produce graduates with a balanced and an excellent university, the curriculum should be made through the university censorship Philosophy of Education, Malaysia Education Act (1996), the international requirements and educational psychology. Thus, university curricula must have a vis ...
Conference title, upper and lower case, bolded, 18 - CHIC
... path is changed via the thermal index change [6,7]. In this approach, the large thermal time constants limit the speed at which the beam can be steered making them unsuitable for real-time and fast applications, such as projection, optical switches, or computing. Thermal crosstalk between adjacent p ...
... path is changed via the thermal index change [6,7]. In this approach, the large thermal time constants limit the speed at which the beam can be steered making them unsuitable for real-time and fast applications, such as projection, optical switches, or computing. Thermal crosstalk between adjacent p ...
Active Control of Rogue Waves for Stimulated Supercontinuum
... liberates one or more narrow solitons while leading to rapid spectral broadening. Without the seed, soliton fission will occur if the pump power is large enough; however, the process begins rather suddenly and explosively (somewhat like the onset of boiling in a superheated liquid), typically fissio ...
... liberates one or more narrow solitons while leading to rapid spectral broadening. Without the seed, soliton fission will occur if the pump power is large enough; however, the process begins rather suddenly and explosively (somewhat like the onset of boiling in a superheated liquid), typically fissio ...
Biology 177: Principles of Modern Microscopy
... If not tapping like AFM how else to scan tip in NSOM? Shear force mode. Advantage: don’t need laser to keep track of probe. ...
... If not tapping like AFM how else to scan tip in NSOM? Shear force mode. Advantage: don’t need laser to keep track of probe. ...
chapter 5 linear and nonlinear optical properties of
... of the molecule because the absorption of UV and visible light involves the promotion of electron in σ and π orbitals from the ground state to higher energy states. To find the transmission range of the as grown crystals, optical transmission spectrum was recorded in the range 200 to 1200 nm. Transm ...
... of the molecule because the absorption of UV and visible light involves the promotion of electron in σ and π orbitals from the ground state to higher energy states. To find the transmission range of the as grown crystals, optical transmission spectrum was recorded in the range 200 to 1200 nm. Transm ...
Imaging Spatial-Helical Mode Interference of Single Photons
... pairs and any other light coming from the laser. The latter polarizer transmitted the down-converted photons, which were vertically polarized. A non-polarizing 50-50 beam splitter separated the photon pairs half the time, with a heralding photon going directly to be detected while the other one (i. ...
... pairs and any other light coming from the laser. The latter polarizer transmitted the down-converted photons, which were vertically polarized. A non-polarizing 50-50 beam splitter separated the photon pairs half the time, with a heralding photon going directly to be detected while the other one (i. ...
6_Line_Communication
... produced by spontaneous emission whereas light from an LD is made by stimulated emission. LED has an incoherent output and wide spectrum but it has higher reliability, simpler drive circuit, lower temperature sensitivity, immunity to reflected light and low cost. LD has an output which is coherent a ...
... produced by spontaneous emission whereas light from an LD is made by stimulated emission. LED has an incoherent output and wide spectrum but it has higher reliability, simpler drive circuit, lower temperature sensitivity, immunity to reflected light and low cost. LD has an output which is coherent a ...
Name:
... A “bit” of extra information to “byte” off about binary numbers: In any form of communication in binary signals (like a DVD, a CD, or an optical signal through an optical fiber), the smallest unit of information is a “bit” -- which would be a “one” (a light pulse) or a “zero” (no light pulse) in a g ...
... A “bit” of extra information to “byte” off about binary numbers: In any form of communication in binary signals (like a DVD, a CD, or an optical signal through an optical fiber), the smallest unit of information is a “bit” -- which would be a “one” (a light pulse) or a “zero” (no light pulse) in a g ...
Optical coherence tomography
Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub- micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.