Gain-Flattening Filters Using Dielectric Multilayer Thin Film
... wavelength we designed the gain-flattening filter by optimizing using non-linear fitting, and compared them. 20 iterations of a simulation of the thin film deposition process were carried out applying a random optical thickness or refractive index error having a standard deviation, and the error lev ...
... wavelength we designed the gain-flattening filter by optimizing using non-linear fitting, and compared them. 20 iterations of a simulation of the thin film deposition process were carried out applying a random optical thickness or refractive index error having a standard deviation, and the error lev ...
Fiber optics for laser cooling and trapping
... In the special case of a dipole trap, laser beams with an elliptical cross-section are required. This is achieved by fiber collimators with integrated anamorphic beam expanders. They produce beams with an elliptical aspect ratio of up to 3:1. When using laser beam sources of different wavelengths, d ...
... In the special case of a dipole trap, laser beams with an elliptical cross-section are required. This is achieved by fiber collimators with integrated anamorphic beam expanders. They produce beams with an elliptical aspect ratio of up to 3:1. When using laser beam sources of different wavelengths, d ...
Application scenarios for optical OFDM
... field of high-speed digital signal processing have recently enabled the use of OFDM for fiber-optic applications and optical OFDM quickly became an active research topic [1, 2]. Advantages of optical OFDM are that it is easily scalable to higher modulation formats [3], has a well defined spectral sh ...
... field of high-speed digital signal processing have recently enabled the use of OFDM for fiber-optic applications and optical OFDM quickly became an active research topic [1, 2]. Advantages of optical OFDM are that it is easily scalable to higher modulation formats [3], has a well defined spectral sh ...
Viscosity dependence of optical limiting in carbon black
... interval between pulses. This is manifested by a turnover in the transmittance at Ein ⬇ 280 J. In CBS兾ethanol we observe the same behavior as in CBS兾water, however, the turnover appears at lower input energy 共Ein ⬇ 75 J兲. This result is consistent with Eq. 共1兲, where, as the viscosity of the liqui ...
... interval between pulses. This is manifested by a turnover in the transmittance at Ein ⬇ 280 J. In CBS兾ethanol we observe the same behavior as in CBS兾water, however, the turnover appears at lower input energy 共Ein ⬇ 75 J兲. This result is consistent with Eq. 共1兲, where, as the viscosity of the liqui ...
Lecture 3
... interaction with isotropic crystals and passes through at a single velocity. However, when light enters a non-equivalent axis (a), it is refracted into two rays each polarized with the vibration directions oriented at right angles to one another, and traveling at different velocities. This phenomeno ...
... interaction with isotropic crystals and passes through at a single velocity. However, when light enters a non-equivalent axis (a), it is refracted into two rays each polarized with the vibration directions oriented at right angles to one another, and traveling at different velocities. This phenomeno ...
Optical Fibre Communications
... • The waveguide structure: — "Theoretical and experimental studies indicate that a fibre of glassy material ... cladded structure with a core ....and an overall diameter of about 100 l represents a practical waveguide with important potential as a new form of communication medium.” • The Loss: — "Th ...
... • The waveguide structure: — "Theoretical and experimental studies indicate that a fibre of glassy material ... cladded structure with a core ....and an overall diameter of about 100 l represents a practical waveguide with important potential as a new form of communication medium.” • The Loss: — "Th ...
Optical Wavefront Sensing and Control
... - For bright objects, a laser guide star is unnecessary. - For dim objects near bright objects, the bright object serves as a natural guide star (hence the terminology “guide star”). - At visible wavelengths, natural guide stars are only available for a very small percentage of the sky (<1% at =2.2 ...
... - For bright objects, a laser guide star is unnecessary. - For dim objects near bright objects, the bright object serves as a natural guide star (hence the terminology “guide star”). - At visible wavelengths, natural guide stars are only available for a very small percentage of the sky (<1% at =2.2 ...
WHITEPAPER Centration Measurement, Alignment
... seen by the naked eye which is however no problem in practice for aligning the sample. Apart from that, the operation of the infrared systems is not different to the VIS systems, so a user can be quickly trained for a new wavelength range. Differences to VIS from a Technical Perspective From a techn ...
... seen by the naked eye which is however no problem in practice for aligning the sample. Apart from that, the operation of the infrared systems is not different to the VIS systems, so a user can be quickly trained for a new wavelength range. Differences to VIS from a Technical Perspective From a techn ...
YOUNG`S INTERFERENCE EXPERIMENT: THE LONG AND
... In most discussions of Young’s interference experiment the precise nature of the screen is conveniently omitted. In this section we investigate the field in the vicin- ...
... In most discussions of Young’s interference experiment the precise nature of the screen is conveniently omitted. In this section we investigate the field in the vicin- ...
Investigation of Physical Properties in II-VI
... method. ZnxCd1-xS thin films are deposited on glass substrates at 420°C substrate temperature. Optical data are recorded in the wavelength range 200-700nm. In addition, the absorption coefficient is determined and correlated with the photon energy to estimate the direct transition energy band gap. T ...
... method. ZnxCd1-xS thin films are deposited on glass substrates at 420°C substrate temperature. Optical data are recorded in the wavelength range 200-700nm. In addition, the absorption coefficient is determined and correlated with the photon energy to estimate the direct transition energy band gap. T ...
Graded-index fibers (GRA)
... Figure 5.3: WKB-solution for the problem (a) with one turning point and (b) with two turning points (Illustration taken from: Timmermann, Lichtwellenleiter) where A, B and C in eq. (5.11), eq. (5.12) and eq. (5.13) designate constants. In order for eq. (5.11) and eq. (5.12), as well as eq. (5.12) an ...
... Figure 5.3: WKB-solution for the problem (a) with one turning point and (b) with two turning points (Illustration taken from: Timmermann, Lichtwellenleiter) where A, B and C in eq. (5.11), eq. (5.12) and eq. (5.13) designate constants. In order for eq. (5.11) and eq. (5.12), as well as eq. (5.12) an ...
Galileoscope Optics Guide - Teaching with Telescopes
... 2. Tell the students that light is a wave, similar to a water wave. They are going to represent a wavefront. A wavefront can be though of as the crest or top of a wave for our purposes. 3. Have the students line up next to each other and lock arms. Have the students practice walking at the same spee ...
... 2. Tell the students that light is a wave, similar to a water wave. They are going to represent a wavefront. A wavefront can be though of as the crest or top of a wave for our purposes. 3. Have the students line up next to each other and lock arms. Have the students practice walking at the same spee ...
Measuring the Real Point Spread Function of High Numerical
... The actual measurement was obtained by finding the best fit to the curve in Figure 11.4. A somewhat surprising result of this exercise ...
... The actual measurement was obtained by finding the best fit to the curve in Figure 11.4. A somewhat surprising result of this exercise ...
MEMS-based handheld confocal microscope for in
... confocal configurations provide increased axial resolution over single axis counterparts, but suffer from decreased collection efficiency due to low NA collection optics [16][17]. High NA objective lenses for endoscopic confocal microscopes have been developed [18][19], but they are designed for us ...
... confocal configurations provide increased axial resolution over single axis counterparts, but suffer from decreased collection efficiency due to low NA collection optics [16][17]. High NA objective lenses for endoscopic confocal microscopes have been developed [18][19], but they are designed for us ...
a flat high-frequency scanning micromirror - EECS: www
... Scanning mirrors are used in many applications: barcode readers, laser printers, confocal microscopes, and fiber-optic network components. There are significant limitations to the performance of macro-scale scanners; in particular, their scanning speed, power consumption, cost, and size often preclu ...
... Scanning mirrors are used in many applications: barcode readers, laser printers, confocal microscopes, and fiber-optic network components. There are significant limitations to the performance of macro-scale scanners; in particular, their scanning speed, power consumption, cost, and size often preclu ...
Chapter 18 - Handbook of Optics
... was developed by Wynne (1965, 1974) for the region of the spectrum extending from 365 to 1014 nm. It is used to extend the field of a parabolic mirror. Versions for a Ritchey-Chretien primary also exist. The corrector is able to correct spherical aberration, coma, astigmatism, and field curvature wh ...
... was developed by Wynne (1965, 1974) for the region of the spectrum extending from 365 to 1014 nm. It is used to extend the field of a parabolic mirror. Versions for a Ritchey-Chretien primary also exist. The corrector is able to correct spherical aberration, coma, astigmatism, and field curvature wh ...
Enhancing four-wave-mixing processes by nanowire arrays coupled to a gold film Ekaterina Poutrina,
... significant conversion efficiency in FWM processes requires that light travels over long interaction lengths – available, for example, in silica fibers [7, 10, 12] – with an effort to achieve proper phase-matching conditions. Alternatively, the conversion efficiency can be increased by concentrating ...
... significant conversion efficiency in FWM processes requires that light travels over long interaction lengths – available, for example, in silica fibers [7, 10, 12] – with an effort to achieve proper phase-matching conditions. Alternatively, the conversion efficiency can be increased by concentrating ...
X-rays as a branch of optics A C Nobel Lecture, December 12, 1927
... from bromine were passed through a crystal of potassium bromide. The precision of his experiment was such that he was able to conclude that the refractive index for a wavelength of 0.5 Å probably differed from unity by less than five parts in a million. Although these direct tests for refraction of ...
... from bromine were passed through a crystal of potassium bromide. The precision of his experiment was such that he was able to conclude that the refractive index for a wavelength of 0.5 Å probably differed from unity by less than five parts in a million. Although these direct tests for refraction of ...
Plasmonic chirality of L-shaped nanostructure composed of two
... polarization [13,14]. A simple, flexible, and effective method to fabricate ACPNs is needed to expand the application of ACPNs. In recent years, four main methods have been used to fabricate ACPNs. First, electron beam lithography (EBL) was used to prepare planar ACPNs with precise dimensions [15,1 ...
... polarization [13,14]. A simple, flexible, and effective method to fabricate ACPNs is needed to expand the application of ACPNs. In recent years, four main methods have been used to fabricate ACPNs. First, electron beam lithography (EBL) was used to prepare planar ACPNs with precise dimensions [15,1 ...