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Optical Elements
... wavelength. Manufacturers offer mostly h = 45 narrow-band mirrors. Monochromatic mirrors are used to suppress background radiation in the systems were only one laser line is used. But their biggest advantage is that highly transparent multilayer stack introduces negligible absorption, which makes m ...
... wavelength. Manufacturers offer mostly h = 45 narrow-band mirrors. Monochromatic mirrors are used to suppress background radiation in the systems were only one laser line is used. But their biggest advantage is that highly transparent multilayer stack introduces negligible absorption, which makes m ...
Photoacoustic imaging velocimetry for flow
... The schematic of the PAIV system is shown in Fig. 1(a). A Q-Switched Nd: YAG laser (LOTIS TII Ltd, Minsk, Belarus) is used as excitation source, which operates at 1064 nm with pulse duration of 10 ns and pulse repetition rate of 15 Hz. The laser is expended by a concave lens and then homogenized by ...
... The schematic of the PAIV system is shown in Fig. 1(a). A Q-Switched Nd: YAG laser (LOTIS TII Ltd, Minsk, Belarus) is used as excitation source, which operates at 1064 nm with pulse duration of 10 ns and pulse repetition rate of 15 Hz. The laser is expended by a concave lens and then homogenized by ...
Generation of radially and azimuthally polarized light by optical
... For optical measurements, the samples are illuminated from the metal film side with a tungsten halogen white light source, and the transmitted light is collected by using a 40 × objective (NA = 0.6) on an inverted optical microscope. Although the subwavelength radial periods of the nanoslits exclude ...
... For optical measurements, the samples are illuminated from the metal film side with a tungsten halogen white light source, and the transmitted light is collected by using a 40 × objective (NA = 0.6) on an inverted optical microscope. Although the subwavelength radial periods of the nanoslits exclude ...
Temporal coherence characteristics of a superluminescent
... experimental system subjected to an optical feedback mechanism, as described schematically in Fig. 1. The output light of the SLD device is collimated by a focusing lens, and then is divided into the reflection arm (70%) and the output arm (30%) using a cubic beam splitter (BS). A mirror M is used t ...
... experimental system subjected to an optical feedback mechanism, as described schematically in Fig. 1. The output light of the SLD device is collimated by a focusing lens, and then is divided into the reflection arm (70%) and the output arm (30%) using a cubic beam splitter (BS). A mirror M is used t ...
Get PDF - OSA Publishing
... multi-photon resonance, e.g. with n photons from the driving laser involved). The resonance enhances the nonlinear susceptibility χ(n) of order n. If permitted by selection rules, this supports generation of the n-th harmonics of the driving laser or frequency mixing processes with m additional phot ...
... multi-photon resonance, e.g. with n photons from the driving laser involved). The resonance enhances the nonlinear susceptibility χ(n) of order n. If permitted by selection rules, this supports generation of the n-th harmonics of the driving laser or frequency mixing processes with m additional phot ...
Frequency comb generation by CW laser injection
... (MLQDL) are interesting for this application as they have a broad gain bandwidth (> 100 nm) required for short pulse generation [7–11]. Further on-chip integration with an optical amplifier, highly non-linear media for spectral broadening and an f–2f interferometer (for carrier envelope offset frequ ...
... (MLQDL) are interesting for this application as they have a broad gain bandwidth (> 100 nm) required for short pulse generation [7–11]. Further on-chip integration with an optical amplifier, highly non-linear media for spectral broadening and an f–2f interferometer (for carrier envelope offset frequ ...
A spatial light modulator for ion trapping experiments
... the bit. It can take either of two states, usually denoted as 0 and 1. The actual implementation of a bit is not attached to a single physical quantity and can be achieved in many ways, but it is very often connected to electronic quantities such as current and voltage, e.g a current flowing through ...
... the bit. It can take either of two states, usually denoted as 0 and 1. The actual implementation of a bit is not attached to a single physical quantity and can be achieved in many ways, but it is very often connected to electronic quantities such as current and voltage, e.g a current flowing through ...
Untitled
... Imaging systems directly impact commercial, military, entertainment, research and communication products. IS captures all the leading-edge research, engineering and systems design of the ever-growing integration of optics, sensors and digital processing. IS focuses on innovative uses of imaging syst ...
... Imaging systems directly impact commercial, military, entertainment, research and communication products. IS captures all the leading-edge research, engineering and systems design of the ever-growing integration of optics, sensors and digital processing. IS focuses on innovative uses of imaging syst ...
At-wavelength figure metrology of hard x
... hard x-ray microscopy, microdiffraction, and spectromicroscopy using a hard x-ray microprobe have the ability to analyze materials nondestructively with precise spatial information. In these techniques, not only the focusing size of the hard x rays, but also the focusing intensity distribution prope ...
... hard x-ray microscopy, microdiffraction, and spectromicroscopy using a hard x-ray microprobe have the ability to analyze materials nondestructively with precise spatial information. In these techniques, not only the focusing size of the hard x rays, but also the focusing intensity distribution prope ...
Calculation of vectorial three-dimensional transfer
... this method is particularly inadequate, because fast Fourier transform algorithms can not be used efficiently. Alternatively, the OTF can be expressed as the correlation or convolution of the vector components of the pupil function. In two dimensions numerical correlation yields the two-dimensional ...
... this method is particularly inadequate, because fast Fourier transform algorithms can not be used efficiently. Alternatively, the OTF can be expressed as the correlation or convolution of the vector components of the pupil function. In two dimensions numerical correlation yields the two-dimensional ...
Open Frame CD/DVD Reader
... remained. In the early 1960’s the stereo technology has been introduced and the demand for high fidelity playback audio systems was still growing. In the 1970’s the companies reached the limitation of analogue audio recording without increasing dramatically the prices for home equipment. This was be ...
... remained. In the early 1960’s the stereo technology has been introduced and the demand for high fidelity playback audio systems was still growing. In the 1970’s the companies reached the limitation of analogue audio recording without increasing dramatically the prices for home equipment. This was be ...
conclusion
... is also often called diamond like carbon (DLC). The phase delaying structures can be generated directly in this substrate. The best technique to do this in a reproducible and controllable way is by plasma etching. However, there are several problems for these processes. A glass substrate contains qu ...
... is also often called diamond like carbon (DLC). The phase delaying structures can be generated directly in this substrate. The best technique to do this in a reproducible and controllable way is by plasma etching. However, there are several problems for these processes. A glass substrate contains qu ...
BMS 524 - 'Introduction to Confocal Microscopy and Image
... • The ratelimiting step is the de-protonation of amino groups, thus the pH dependence of the crosslinking • Functional groups that are reactive are amido, guanidino, thiol, phenol, imidazole and indolyl groups • Can crosslink nucleic acids • Therefore the preferred fixative for in situ hybridization ...
... • The ratelimiting step is the de-protonation of amino groups, thus the pH dependence of the crosslinking • Functional groups that are reactive are amido, guanidino, thiol, phenol, imidazole and indolyl groups • Can crosslink nucleic acids • Therefore the preferred fixative for in situ hybridization ...
Enhancement of absorption and color contrast in
... Al2O3 thickness that minimizes reflection is not necessarily k/(4nAl2O3), and varies significantly as a function of wavelength because of the large dispersion of Ge and the underlying Au. Our calculations show that a thickness of roughly k/ (5nAl2O3) to k/(7nAl2O3) is needed to minimize the reflecti ...
... Al2O3 thickness that minimizes reflection is not necessarily k/(4nAl2O3), and varies significantly as a function of wavelength because of the large dispersion of Ge and the underlying Au. Our calculations show that a thickness of roughly k/ (5nAl2O3) to k/(7nAl2O3) is needed to minimize the reflecti ...
Scanning Transmission Electron Microscopy
... CTEM/STEM instruments, the far-field intensity can be observed on the fluorescent screen at the bottom of the column when the instrument is operated in STEM mode with the lower column set to diffraction mode. In dedicated STEM instruments it is usual to have a camera consisting of a scintillator cou ...
... CTEM/STEM instruments, the far-field intensity can be observed on the fluorescent screen at the bottom of the column when the instrument is operated in STEM mode with the lower column set to diffraction mode. In dedicated STEM instruments it is usual to have a camera consisting of a scintillator cou ...
Diffracting fractals: new paradigms in linear wave physics
... fractal structures, there has been relatively little investigation of the consequences of fractal illumination. However, it has for example been demonstrated (both theoretically and experimentally) that a fractal light probe may improve sensitivity of surface roughness measurements (Nada, Uozumi, & ...
... fractal structures, there has been relatively little investigation of the consequences of fractal illumination. However, it has for example been demonstrated (both theoretically and experimentally) that a fractal light probe may improve sensitivity of surface roughness measurements (Nada, Uozumi, & ...
Semiconductor Lasers: Device Physics and Applications
... 1.95 kA/cm2 and 2.18 kA/cm2. A likely explanation for the abrupt change in the output power at 48 mA is that the electrical behavior of the p-n-p-n structure exhibited a thyristor-type effect in which the location of the voltage drop within the device changed. The relatively large threshold current ...
... 1.95 kA/cm2 and 2.18 kA/cm2. A likely explanation for the abrupt change in the output power at 48 mA is that the electrical behavior of the p-n-p-n structure exhibited a thyristor-type effect in which the location of the voltage drop within the device changed. The relatively large threshold current ...
Absolute Specular Reflectance Measurements at Fixed
... configurations. (See Figure 1) The only difference between the reference (baseline) and sample scans is due to the introduction of the sample into the beam path. As long as the optical path length, mirror surfaces, and reflection angles do not change from baseline to sample scan, the measurement is ...
... configurations. (See Figure 1) The only difference between the reference (baseline) and sample scans is due to the introduction of the sample into the beam path. As long as the optical path length, mirror surfaces, and reflection angles do not change from baseline to sample scan, the measurement is ...
Measurement and correction of aberrations in light and electron
... the average rat brain refractive index in vivo. The conclusion is that twophoton microscopy is affected by optical aberrations in this sample starting at depths around 200 µm. Deep-OCM is well suited for imaging myelinated nerve fibers. Individual fibers can be visualized in the living brain in unpr ...
... the average rat brain refractive index in vivo. The conclusion is that twophoton microscopy is affected by optical aberrations in this sample starting at depths around 200 µm. Deep-OCM is well suited for imaging myelinated nerve fibers. Individual fibers can be visualized in the living brain in unpr ...
Helicity-dependent three-dimensional optical trapping of chiral
... which gives rise to helicity dependent optical forces16. The latter point is illustrated in Fig. 2f,g that display full transmission images of a radial cholesteric droplet under left handed (L ¼ þ 1) and right handed (L ¼ 1) circularly polarized illumination at 532 nm wavelength, respectively. The ...
... which gives rise to helicity dependent optical forces16. The latter point is illustrated in Fig. 2f,g that display full transmission images of a radial cholesteric droplet under left handed (L ¼ þ 1) and right handed (L ¼ 1) circularly polarized illumination at 532 nm wavelength, respectively. The ...
unable_MEMS.pdf
... Nonetheless, tunability offers a solution to the increasingly difficult problem of inventory stock and sparing for DWDM transmitters and receivers used in opaque networks capable of carrying more than 100 wavelengths per fiber. In case of hardware failure, a complete inventory of fixed-wavelength tr ...
... Nonetheless, tunability offers a solution to the increasingly difficult problem of inventory stock and sparing for DWDM transmitters and receivers used in opaque networks capable of carrying more than 100 wavelengths per fiber. In case of hardware failure, a complete inventory of fixed-wavelength tr ...
A method for controlling the bandwidth of high-energy, few
... Their construction contains two OPAs, the first of them delivering a phase-stable idler that experiences spectral broadening through a 3 mm-thick sapphire plate to generate supercontinuum spectra. The OPA is based on a BBO crystal enabling tunability of the output wavelength from 500 to 1600 nm by t ...
... Their construction contains two OPAs, the first of them delivering a phase-stable idler that experiences spectral broadening through a 3 mm-thick sapphire plate to generate supercontinuum spectra. The OPA is based on a BBO crystal enabling tunability of the output wavelength from 500 to 1600 nm by t ...
Wavefront Technology
... customized correction of higher-order aberrations became possible. Custom ablation is an ablation profile designed to meet optical correction requirements for a specific individual eye.2 ...
... customized correction of higher-order aberrations became possible. Custom ablation is an ablation profile designed to meet optical correction requirements for a specific individual eye.2 ...
Overlay Network Andreas Holmqvist, Alexander Kronstrand Information Coding
... connections that we have experienced today. This has led to a continuous research on how to improve the capacity of the Internet. The use of copper cables has reached its limit in bandwidth and distance, thus fiber has replaced copper on the long distance communications and is in the process of repl ...
... connections that we have experienced today. This has led to a continuous research on how to improve the capacity of the Internet. The use of copper cables has reached its limit in bandwidth and distance, thus fiber has replaced copper on the long distance communications and is in the process of repl ...
Confocal microscopy
Confocal microscopy is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of adding a spatial pinhole placed at the confocal plane of the lens to eliminate out-of-focus light. It enables the reconstruction of three-dimensional structures from the obtained images. This technique has gained popularity in the scientific and industrial communities and typical applications are in life sciences, semiconductor inspection and materials science.