Transmisi Optik Pertemuan 10
... • LED can only achieve pulse rates up to about 100 Mhz • The spectrum of output LED is not very sharp is about an 850 nm center ...
... • LED can only achieve pulse rates up to about 100 Mhz • The spectrum of output LED is not very sharp is about an 850 nm center ...
Deep Horizontal Atmospheric Turbulence Modeling and Simulation with a Liquid
... We investigate the performance of a Liquid Crystal (LC) Spatial Light Modulator (SLM) as an optical device for generating high intensity atmospheric turbulence in the laboratory. The experimental setup represents long range horizontal beam propagation at a low altitude where the conditions of atmosp ...
... We investigate the performance of a Liquid Crystal (LC) Spatial Light Modulator (SLM) as an optical device for generating high intensity atmospheric turbulence in the laboratory. The experimental setup represents long range horizontal beam propagation at a low altitude where the conditions of atmosp ...
Investigation of nanoscale structural alterations of cell nucleus as an
... magnitude less than what conventional light microscope can detect. The nanoscale structural characteristics can be measured either using direct imaging with nanoscale resolution, or indirect analysis of optical signals from light-cell interaction. The direct nanoscopic imaging can be achieved by sup ...
... magnitude less than what conventional light microscope can detect. The nanoscale structural characteristics can be measured either using direct imaging with nanoscale resolution, or indirect analysis of optical signals from light-cell interaction. The direct nanoscopic imaging can be achieved by sup ...
Ocean Optical Properties - The Oceanography Society
... recent advances in technology have scientific measurement capabilities, made it easier and more affordable for especially in a field like oceanography research groups to develop unique instrumentation for where large numbers of quantitative observations are addressing highly specific experimental pr ...
... recent advances in technology have scientific measurement capabilities, made it easier and more affordable for especially in a field like oceanography research groups to develop unique instrumentation for where large numbers of quantitative observations are addressing highly specific experimental pr ...
Measurement of radiation-pressure
... We present a model that describes both the OS and PI, valid for the PI when it occurs within the fundamental 共TEM00兲 optical mode. The experimental setup is shown in Fig. 1. The cavity mirrors, suspended by single loops of wire, are located in a vacuum chamber where they are mounted on a vibrational ...
... We present a model that describes both the OS and PI, valid for the PI when it occurs within the fundamental 共TEM00兲 optical mode. The experimental setup is shown in Fig. 1. The cavity mirrors, suspended by single loops of wire, are located in a vacuum chamber where they are mounted on a vibrational ...
Manual for Diode Laser Spectroscopy
... corresponds to a current of 10 mA. The rubidium cell temperature should be maintained at 60 ◦ C as read from the cell temperature monitor. For adjustment, please refer to the TeachSpin manual[1, p. 5-27]. The various experimental setups are constructed on an optical breadboard. To conduct optical ab ...
... corresponds to a current of 10 mA. The rubidium cell temperature should be maintained at 60 ◦ C as read from the cell temperature monitor. For adjustment, please refer to the TeachSpin manual[1, p. 5-27]. The various experimental setups are constructed on an optical breadboard. To conduct optical ab ...
Ultrashort-Pulse Generation and Ultrafast Phenomena
... mirrors developed in our group, provide high reflectivity and well controlled dispersion over 400 nm in the case of single mirrors or even over one octave using specially matched mirror pairs. These components are a prerequisite for miniaturized ultrabroadband femtosecond lasers necessary for biomed ...
... mirrors developed in our group, provide high reflectivity and well controlled dispersion over 400 nm in the case of single mirrors or even over one octave using specially matched mirror pairs. These components are a prerequisite for miniaturized ultrabroadband femtosecond lasers necessary for biomed ...
FABRY PEROT RESONATOR
... will not be good if the emission bandwidth of the light source is wide. Michelson carried out his experiments with the red line of a cadmium lamp which had a coherence length of only 20 cm. Since the index arm is traversed twice the measurement area available for him to work on was only 10 cm. Since ...
... will not be good if the emission bandwidth of the light source is wide. Michelson carried out his experiments with the red line of a cadmium lamp which had a coherence length of only 20 cm. Since the index arm is traversed twice the measurement area available for him to work on was only 10 cm. Since ...
Mode selective fiber Bragg gratings
... fiber Bragg gratings (FBGs) compete with dielectric mirrors and volume Bragg gratings as resonator mirrors. However, many high power fiber laser systems rely on large mode area (LMA) fibers. FBG inscription by conventional means is challenging here, because for large, actively doped fiber cores, the nec ...
... fiber Bragg gratings (FBGs) compete with dielectric mirrors and volume Bragg gratings as resonator mirrors. However, many high power fiber laser systems rely on large mode area (LMA) fibers. FBG inscription by conventional means is challenging here, because for large, actively doped fiber cores, the nec ...
B. Gaussian Beam Transformation by a Lens.
... source (usually the output of a spatial filter). This will give an output beam that is almost collimated. 2. Insert the optical flat, at an angle, in the output beam path and place a white card to view the interference pattern. The angle should be chosen such that a complete interference pattern can ...
... source (usually the output of a spatial filter). This will give an output beam that is almost collimated. 2. Insert the optical flat, at an angle, in the output beam path and place a white card to view the interference pattern. The angle should be chosen such that a complete interference pattern can ...
The European Concerted Research Action COST P14
... We have used point projection K-shell absorption spectroscopy to infer the ionization and recombination dynamics of transient aluminium plasmas. Two femtosecond beams of the 100-TW laser at the LULI facility were used to produce an aluminum plasma on a thin aluminium foil (83- or 50-nm), and a picos ...
... We have used point projection K-shell absorption spectroscopy to infer the ionization and recombination dynamics of transient aluminium plasmas. Two femtosecond beams of the 100-TW laser at the LULI facility were used to produce an aluminum plasma on a thin aluminium foil (83- or 50-nm), and a picos ...
Scientific Program - Instituto de Física Facultad de Ciencias
... The role of delay in nonlinear systems, arising from a finite propagation time of the coupling signals, is of central importance in many different areas of science. Multi-section DFB lasers are ideal candidates for studying delay-related phenomena as they allow to control and to tune the relevant fe ...
... The role of delay in nonlinear systems, arising from a finite propagation time of the coupling signals, is of central importance in many different areas of science. Multi-section DFB lasers are ideal candidates for studying delay-related phenomena as they allow to control and to tune the relevant fe ...
Optical fibres
... In homodyne receiver, one way communication is encouraged where as the heterodyne receiver encourages to transmit and receive the signal in a single receiver unit. If the transmitted signal alone be received through the receiver whose frequency synchronize with the local laser frequency, it will be ...
... In homodyne receiver, one way communication is encouraged where as the heterodyne receiver encourages to transmit and receive the signal in a single receiver unit. If the transmitted signal alone be received through the receiver whose frequency synchronize with the local laser frequency, it will be ...
Statistical Mechanics
... Student shall be able to formulate a well-defined and physically significant problem within the main areas of nonlinear optics. Describe the photo induced refractive index using the induced polarization and apply the corresponding wave equation to explain transmission of short optical pulses. Differ ...
... Student shall be able to formulate a well-defined and physically significant problem within the main areas of nonlinear optics. Describe the photo induced refractive index using the induced polarization and apply the corresponding wave equation to explain transmission of short optical pulses. Differ ...
Using intrinsically fluorescent proteins for plant cell
... tremendous potential to reveal the dynamic processes that underlie plant cell function; however, as with all technology there are artifacts and pitfalls inherent in their use. In this review, we highlight some of the practical issues in using IFPs for live cell imaging. These include choice of the a ...
... tremendous potential to reveal the dynamic processes that underlie plant cell function; however, as with all technology there are artifacts and pitfalls inherent in their use. In this review, we highlight some of the practical issues in using IFPs for live cell imaging. These include choice of the a ...
Far-Field Optical Superlens
... far field.23 Earlier efforts were made to increase the numerical aperture of an optical system when a one-dimensional object was imaged by misalignment of the two gratings.24 This method however, only dealt with propagation waves that resulted in a diffraction-limited image. By contact of the two gr ...
... far field.23 Earlier efforts were made to increase the numerical aperture of an optical system when a one-dimensional object was imaged by misalignment of the two gratings.24 This method however, only dealt with propagation waves that resulted in a diffraction-limited image. By contact of the two gr ...
The term fluorescence was coined by Stokes circa 1850 to name a
... light path and heterogeneous staining. Note however that both fura-2 and indo-1 require UV excitation (see Table 2). Fluor-3 and rhod-2 (see Fig. 5) do not have any appreciable shift either in excitation or emission and thus do not offer an opportunity for ratiometric measurements. However, these dy ...
... light path and heterogeneous staining. Note however that both fura-2 and indo-1 require UV excitation (see Table 2). Fluor-3 and rhod-2 (see Fig. 5) do not have any appreciable shift either in excitation or emission and thus do not offer an opportunity for ratiometric measurements. However, these dy ...
Superluminal ring laser for hypersensitive sensing H. N. Yum, M. Salit,
... behavior of the laser reveals an effective negative dispersion. Specifically, we show that if the gain profile has a dip in the middle, the lasing mode centered at the dip behaves like a WLC, with its frequency becoming highly sensitive to mirror displacement. The enhancement factor can be as high a ...
... behavior of the laser reveals an effective negative dispersion. Specifically, we show that if the gain profile has a dip in the middle, the lasing mode centered at the dip behaves like a WLC, with its frequency becoming highly sensitive to mirror displacement. The enhancement factor can be as high a ...
pdf.file
... the water, and especially through the air-water interface. Our simulation methodology is part of a more general approach to underwater imaging, which has been of particular interest to researchers in fields such as marine science and military defense and we believe that our results will be useful in ...
... the water, and especially through the air-water interface. Our simulation methodology is part of a more general approach to underwater imaging, which has been of particular interest to researchers in fields such as marine science and military defense and we believe that our results will be useful in ...
Beam shaping based on intermediate zone diffraction of a micro
... We further evaluated the beam focusing of the 0th-order maxima for wider slits of interest (up to ten wavelengths). It was found, as shown in Fig. 5, that the focal length (distance of maxima to slit screen) can extend to a range of tens of wavelengths, while the focal width (defined with full-width ...
... We further evaluated the beam focusing of the 0th-order maxima for wider slits of interest (up to ten wavelengths). It was found, as shown in Fig. 5, that the focal length (distance of maxima to slit screen) can extend to a range of tens of wavelengths, while the focal width (defined with full-width ...
Rayleigh scattering by gas molecules: why is the sky blue?
... Figure 2 – Spherical polar geometry. The incident radiation is traveling along the negative x direction with its electric field oscillating in the x-z plane. Scattered light is viewed at an angle θ to the z axis, and φ is 90◦ in our apparatus. ...
... Figure 2 – Spherical polar geometry. The incident radiation is traveling along the negative x direction with its electric field oscillating in the x-z plane. Scattered light is viewed at an angle θ to the z axis, and φ is 90◦ in our apparatus. ...
Imaging endothelial activation
... contrast agents that consist of an iron oxide core about 5nm in size, surrounded by a non-covalently attached low molecular weight dextran which increases the size to about 30-50nm. USPIO align magnetically in an applied magnetic field and cause microscopic field gradients that efficiently dephase n ...
... contrast agents that consist of an iron oxide core about 5nm in size, surrounded by a non-covalently attached low molecular weight dextran which increases the size to about 30-50nm. USPIO align magnetically in an applied magnetic field and cause microscopic field gradients that efficiently dephase n ...
Resins for Optics
... 1-1. Brief Description of the Refractive Index The refractive index shows the optical density of a material and it is generally represented by “n”. In other words, the refractive index is the resistance under which light passes through a material. A greater resistance results in an increased refract ...
... 1-1. Brief Description of the Refractive Index The refractive index shows the optical density of a material and it is generally represented by “n”. In other words, the refractive index is the resistance under which light passes through a material. A greater resistance results in an increased refract ...
High-resolution measurement of phase singularities
... The patterns of the binary computer-generated hologram have been deduced from the calculated lines of constructive interference between the laser modes to be generated and the plane reference wave propagating under a design angle relative to the laser mode of tan h = k/K [3]. The period of the resul ...
... The patterns of the binary computer-generated hologram have been deduced from the calculated lines of constructive interference between the laser modes to be generated and the plane reference wave propagating under a design angle relative to the laser mode of tan h = k/K [3]. The period of the resul ...
Nanometer-resolution electron microscopy through
... we used Monte Carlo calculations to simulate electron trajectories for given irradiation schemes and sample geometries. The Monte Carlo calculations have the advantage over the analytical model presented in the above of including beam blurring and multiple scattering. The calculation model was based ...
... we used Monte Carlo calculations to simulate electron trajectories for given irradiation schemes and sample geometries. The Monte Carlo calculations have the advantage over the analytical model presented in the above of including beam blurring and multiple scattering. The calculation model was based ...
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.