LS2520342037
... photonic crystal fiber are determined by the size, pattern of air holes rather than by the properties of optical glass[2]. Light is guided through small solid core PCFs, where high intensities can be maintained for interaction lengths of several meters resulting in large nonlinear effect. It has bee ...
... photonic crystal fiber are determined by the size, pattern of air holes rather than by the properties of optical glass[2]. Light is guided through small solid core PCFs, where high intensities can be maintained for interaction lengths of several meters resulting in large nonlinear effect. It has bee ...
Temporal evolution of the angular response of a PVA/acrylamide photopolymer
... sample at an angle of 16.8° to the normal with an appropriate set of mirrors, and the spatial frequency obtained was 1125 lines/mm. The working intensity at 514 nm was 5 mW/cm2. The diffracted and transmitted intensity were monitored in real time with a He-Ne laser positioned at Bragg’s angle (20.8˚ ...
... sample at an angle of 16.8° to the normal with an appropriate set of mirrors, and the spatial frequency obtained was 1125 lines/mm. The working intensity at 514 nm was 5 mW/cm2. The diffracted and transmitted intensity were monitored in real time with a He-Ne laser positioned at Bragg’s angle (20.8˚ ...
Research Article Structural and Optical Properties of Chemical Bath
... Copyright © 2013 A. C. Nwanya et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Silver oxide thin films were deposited on glass ...
... Copyright © 2013 A. C. Nwanya et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Silver oxide thin films were deposited on glass ...
Lecture 7 Optical Lithography
... Rayleigh resolution limit: Resolvable separation Sr = 0.6 /NA Examples for objects equal size & spacing ...
... Rayleigh resolution limit: Resolvable separation Sr = 0.6 /NA Examples for objects equal size & spacing ...
Fabrication of elliptically figured mirror for focusing hard x rays to
... selected to be 150 mm, 1 km, and 100 m, respectively, in Eq. 共1兲, D1 is calculated to be only 15 nm. This calculation result denotes that a nanofocused hard x-ray beam with a size less than 50 nm is feasible at this beamline. The designed surface profile is a partial profile of an elliptic function ...
... selected to be 150 mm, 1 km, and 100 m, respectively, in Eq. 共1兲, D1 is calculated to be only 15 nm. This calculation result denotes that a nanofocused hard x-ray beam with a size less than 50 nm is feasible at this beamline. The designed surface profile is a partial profile of an elliptic function ...
Acoustooptic interaction of two light beams in a paratellurite crystal
... was excited by a piezoelectric transducer made from xcut lithium niobate. The calculation has shown that, when the length of the piezoelectric transducer is l = 1.4 cm and the ultrasonic frequency is f = 180– 190 MHz, the sound divergence is 4 mrad. The acoustic-wave velocity is oriented at the angl ...
... was excited by a piezoelectric transducer made from xcut lithium niobate. The calculation has shown that, when the length of the piezoelectric transducer is l = 1.4 cm and the ultrasonic frequency is f = 180– 190 MHz, the sound divergence is 4 mrad. The acoustic-wave velocity is oriented at the angl ...
Femto-Photography: Capturing and Visualizing the
... We present femto-photography, a novel imaging technique to capture and visualize the propagation of light. With an effective exposure time of 1.85 picoseconds (ps) per frame, we reconstruct movies of ultrafast events at an equivalent resolution of about one half trillion frames per second. Because c ...
... We present femto-photography, a novel imaging technique to capture and visualize the propagation of light. With an effective exposure time of 1.85 picoseconds (ps) per frame, we reconstruct movies of ultrafast events at an equivalent resolution of about one half trillion frames per second. Because c ...
Long period grating based biosensor for the detection of Escherichia
... the back scattering electron (BSE) mode of the SEM. The highenergy electrons originating in the incident electron beam back scatter form of the E. coli volume due to the elastic scattering interactions with the E. coli bacterium atoms, which are in turn recorded using an asymmetrical, directional BS ...
... the back scattering electron (BSE) mode of the SEM. The highenergy electrons originating in the incident electron beam back scatter form of the E. coli volume due to the elastic scattering interactions with the E. coli bacterium atoms, which are in turn recorded using an asymmetrical, directional BS ...
Experimental implementation of the gyrator transform - E
... are not required because the alignment between amplitude and phase components is digitally achieved by means of a PC. Therefore this alignment accuracy is limited by the pixel size, which is 20 m in our case (Holoeye LCR-2500 SLM). The signal quality is also limited by the spatial resolution and in ...
... are not required because the alignment between amplitude and phase components is digitally achieved by means of a PC. Therefore this alignment accuracy is limited by the pixel size, which is 20 m in our case (Holoeye LCR-2500 SLM). The signal quality is also limited by the spatial resolution and in ...
Temperature Tuning Characteristics of Periodically Poled Lithium
... Figure 1 shows the calculated efficiencies of SHG for three cases of phase matching in Lithium Niobate: BPM corresponds to perfect phase matching, leading to the highest efficiency; QPM represents quasi phase matching with first order grating (m=1), and the last curve is that of a non-phase matched ...
... Figure 1 shows the calculated efficiencies of SHG for three cases of phase matching in Lithium Niobate: BPM corresponds to perfect phase matching, leading to the highest efficiency; QPM represents quasi phase matching with first order grating (m=1), and the last curve is that of a non-phase matched ...
THE VARIATION O F .THE STRESS OPTICAL COEFFICIENT WITH
... this manuscript in whole or in part may be granted by the head of the major department or the Dean of the Graduate College when in his judg ment the proposed use of the material is in the interests of scholar ...
... this manuscript in whole or in part may be granted by the head of the major department or the Dean of the Graduate College when in his judg ment the proposed use of the material is in the interests of scholar ...
PDF
... phase-matching conditions need to be carefully considered when studying 3HG and FWM. Nevertheless, 3HG and FWM can be used to obtain frequency shifts and all-optical amplification. In comparison with other types of optical fibers, PCFs are particularly useful for 3HG and FWM applications. The small ...
... phase-matching conditions need to be carefully considered when studying 3HG and FWM. Nevertheless, 3HG and FWM can be used to obtain frequency shifts and all-optical amplification. In comparison with other types of optical fibers, PCFs are particularly useful for 3HG and FWM applications. The small ...
Experiments in Optics - Workspace
... methodically. If you get stuck, first talk the problem through with your partner; if you cannot resolve the issue after 5 minutes, ask a demonstrator. ...
... methodically. If you get stuck, first talk the problem through with your partner; if you cannot resolve the issue after 5 minutes, ask a demonstrator. ...
Light scattering by randomly rough surfaces
... A basic quantity for the description of the random process is the two-point height correlation function hζ(x1 )ζ(x01 )i = δ 2 W (|x1 − x01 |), where the angled brackets represent an average over an ensemble of realizations of the surface, and δ 2 = hζ 2 (x1 )i. The parameter δ represents the standar ...
... A basic quantity for the description of the random process is the two-point height correlation function hζ(x1 )ζ(x01 )i = δ 2 W (|x1 − x01 |), where the angled brackets represent an average over an ensemble of realizations of the surface, and δ 2 = hζ 2 (x1 )i. The parameter δ represents the standar ...
Prac%ce`Quiz3`Part1`
... Prac%ce Quiz 3 Part 1 These are Q’s from old quizzes. I do not guarantee that the Q’s on this year’s quiz will be the same, or even similar. ...
... Prac%ce Quiz 3 Part 1 These are Q’s from old quizzes. I do not guarantee that the Q’s on this year’s quiz will be the same, or even similar. ...
Diffraction
... Now consider the case where a front smooth wave is running on a slit. If this slit is large compared to the wavelength of the light, the wave properties are not observable. Consequently, the slit must be in the order of magnitude of the wavelength of the light used. Now consider Figure 1.1. There, i ...
... Now consider the case where a front smooth wave is running on a slit. If this slit is large compared to the wavelength of the light, the wave properties are not observable. Consequently, the slit must be in the order of magnitude of the wavelength of the light used. Now consider Figure 1.1. There, i ...
Chapter One: An Introduction to Nonlinear Optics, Second Order
... This capability allows the construction of many types of light modulators and switches. While in the computing and communications industry today much of the data transmission is conducted by fiber optics, most of the switching is done electronically. Electronic signals are fed into laser diodes whic ...
... This capability allows the construction of many types of light modulators and switches. While in the computing and communications industry today much of the data transmission is conducted by fiber optics, most of the switching is done electronically. Electronic signals are fed into laser diodes whic ...
2. Spectral Stray Light
... radiance on the detector elements. This set-up illuminates only a single channel, hence signals in other channels are due to spectral stray light. To enhance the signal-to-noise ratio of these out-of-band signals, a very high radiance level was chosen which saturated the illuminated detector element ...
... radiance on the detector elements. This set-up illuminates only a single channel, hence signals in other channels are due to spectral stray light. To enhance the signal-to-noise ratio of these out-of-band signals, a very high radiance level was chosen which saturated the illuminated detector element ...
Anti-reflective coating
An antireflective or anti-reflection (AR) coating is a type of optical coating applied to the surface of lenses and other optical elements to reduce reflection. In typical imaging systems, this improves the efficiency since less light is lost. In complex systems such as a telescope, the reduction in reflections also improves the contrast of the image by elimination of stray light. This is especially important in planetary astronomy. In other applications, the primary benefit is the elimination of the reflection itself, such as a coating on eyeglass lenses that makes the eyes of the wearer more visible to others, or a coating to reduce the glint from a covert viewer's binoculars or telescopic sight.Many coatings consist of transparent thin film structures with alternating layers of contrasting refractive index. Layer thicknesses are chosen to produce destructive interference in the beams reflected from the interfaces, and constructive interference in the corresponding transmitted beams. This makes the structure's performance change with wavelength and incident angle, so that color effects often appear at oblique angles. A wavelength range must be specified when designing or ordering such coatings, but good performance can often be achieved for a relatively wide range of frequencies: usually a choice of IR, visible, or UV is offered.