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EUROPEAN PHARMACOPOEIA 7.0 by extrinsic factors (test conditions), such as hydrodynamics,
EUROPEAN PHARMACOPOEIA 7.0 by extrinsic factors (test conditions), such as hydrodynamics,

... in lens and equipment design, newer instruments are capable INSTRUMENT The instrument is located in an environment where it is not affected by electrical noise, mechanical vibrations, temperature fluctuations, humidity or direct bright light. An example of a set-up of a laser light diffraction instr ...
Fast Optical Communication Components
Fast Optical Communication Components

... cables used in wired networks ...
Absorption of low-loss optical materials measured at 1064 nm by a
Absorption of low-loss optical materials measured at 1064 nm by a

... In our setup its value is ␪opt ⫽ 0.6 mrad, which permits a sensitivity gain of a factor of 1.84 共see Appendix A兲 compared with that of the chopped beam while the amount of spurious light in the setup as well as the level of vibration is decreased. One can understand intuitively that the signal is la ...
Advanced Microscopy
Advanced Microscopy

... arm, which allows a higher resolution in the depth of the sample. Objects which are not in the image plane are virtually cut out by ...
femtosecond laser ablation of dielectrics
femtosecond laser ablation of dielectrics

... To overcome all these obstacles, we have performed experiment in which the samples (SiO 2 and Al2O3) are excited by a pair of laser pulses. The first pulse, with fixed duration of 50 fs, is the second harmonic of a Ti-Sa laser, and excites a well controlled density of carriers in the conduction band ...
Surface profile measurement of aspheric optics using
Surface profile measurement of aspheric optics using

... between light reflected from the aspheric surface and a known reference surface (usually the rear surface) while the probe scans the contour of the test optic. The phase difference between the test and reference surfaces is deduced from the measured intensity and the deviation of the aspheric surfac ...
A Ti: Sapphire Planar Waveguide Laser Grown by Pulsed Laser
A Ti: Sapphire Planar Waveguide Laser Grown by Pulsed Laser

... limitations in CW operation, have been the high pump power density required to achieve efficient lasing and the fact that the peak absorption is situated in the blue-green (~500nm). This requires the use of expensive pump lasers such as argon ion, doubled Nd:YAG, copper vapour or dye lasers. Effort ...
Total view of the AFM
Total view of the AFM

... which is lower than that of electrons in SEM. The process is called ionmilling. • Common applications are for etching materials so that they are suitable for imaging in optical microscope or even TEM • The minimum spot size of ions is ~10 nm, which is much larger than SEM. • The region affected by t ...
doc - University of Rochester
doc - University of Rochester

... is incident on a crystal that produces entangled photon pairs (biphotons). One of the photons, called the signal photon, scatters from the object and is detected by detector A. A point detector B in a CCD array located in the image plane detects the second photon, called the idler photon. The signal ...
Click To
Click To

... period of an array of permanent magnets arranged in a repelling configuration. It would be desirable to be able to vary the stress in a portion of an optical fiber segment and to vary the birefringence in the entire length of the segment. For information about this technology, please contact: Jeff A ...
View PDF
View PDF

... What if the rise/fall time of the signal exceeds the available bandwidth? What if we want to exclude some part of the signal? A Lock-in is not helpful for these types of signals General operational scheme of a boxcar integrator ...
Introduction
Introduction

... • The purpose of a rise-time budget is to ensure that the complete system is able to operate at the intended bit-rate • The rise-time characteristics of the transmitter and receiver are usually known. The allocated rise time will depend on the format used by the system, i.e.Return to Zero (RZ) or No ...
absorbance, a - srmbiotech25
absorbance, a - srmbiotech25

... – The absorbing medium must not scatter the radiation - no turbidity; – The incident radiation must consist of parallel rays, each traversing the same length in the absorbing medium; – The incident radiation should preferably be monochromatic, or have at least a width that is narrower than that of t ...
Raman Spectra of Optically Trapped Microcomplexes
Raman Spectra of Optically Trapped Microcomplexes

... and traps a m=1.2, polystyrene, sphere. S’=r/a and Q are dimensionless parameters (a=radius of the sphere; r=distance from the beam axis). Gradient, scattering and total forces as a function of the distance S’ of the trap focus from the origin along the yaxis (transversal). The transverse force is s ...
In the diagram below, the optical train of a set of binoculars is found
In the diagram below, the optical train of a set of binoculars is found

... temperature drift, by monitoring transmission of a laser beam at =500 nm. The change ...
Magnetometry - Quantum Design, Inc.
Magnetometry - Quantum Design, Inc.

... measurement techniques. This torque detection system offers substantial immunity to gravity effects and minimal temperature dependence, which is accounted for in an automated calibration of the torque lever. Other advantages of the Tq-Mag include fast data acquisition and the ability to sweep temper ...
Cost-effective optical coherence tomography spectrometer based on
Cost-effective optical coherence tomography spectrometer based on

... focusing of the beam. Furthermore, the number of components and their long term alignment drives the costs for low maintenance, high resolution instruments. An approach to miniaturize devices and thereby increase their stability is to combine functionalities of different optical components into one, ...
femtosecond laser - UCSB - Optical Characterization Lab
femtosecond laser - UCSB - Optical Characterization Lab

... creates similar distribution of the refractive index. • High-intensity beam is self-focused by the photoinduced lens. ...
Inverse scattering for frequency-scanned full-field
Inverse scattering for frequency-scanned full-field

... around the focal plane is obtained, and the out-of-focus contributions are removed by coherence gating. The usual technique is then to translate the sample through the focal plane so that the scatterers at many different depths may be imaged and a 3-D structure obtained. While this method can be use ...
All students are asked for bringing your own samples which
All students are asked for bringing your own samples which

... The size of the spot formed by the beam on the sample surface sets a fundamental limit on resolution. An SEM cannot resolve features smaller than the spot size. In general, low beam current, short working distance and high accelerating voltage yield the smallest spot. Other factors such as type of s ...
- Welcome to UC Santa Barbara
- Welcome to UC Santa Barbara

... creates similar distribution of the refractive index. • High-intensity beam is self-focused by the photoinduced lens. ...
(Digital Micro-Mirror Device) Based Multi-Object
(Digital Micro-Mirror Device) Based Multi-Object

... scanning is needed. We also achieve flexibility in adjusting the spectrometer’s integration time to the sample’s size and its reflectivity. In Figure 2 we have suggested a design for the detecting side of the system. Software for synchronizing illumination, triggering of two DMDs, camera and spectro ...
Chapter 7 Components of Optical Instruments
Chapter 7 Components of Optical Instruments

... Figure 7-1 how these components assembled in these 6 different instruments In absorption, detector is in line with source vs in fluorescence, scattering and phosphorescence detector is literally at 90o to source. In some instruments sample and wavelength selector may be switched In emission and chem ...
Characterisation of the Tunable Laser Source
Characterisation of the Tunable Laser Source

... possible to see the spectral profile of the signal over a certain wavelength range. The profile is graphically displayed, with wavelength on the horizontal axis and power on the vertical axis. In this way, the many signals combined on a single fibre in a dense wavelength division multiplexing (DWDM) ...
1489_1.pdf
1489_1.pdf

... propagation, such as backscattering from grains; it means sensitivity of the detection system is not essential for the detectability. To eliminate this kind of coherent noise, we focused on the frequency dependence of the noises. SSP and laser ultrasonics are good combination because laser ultrasoni ...
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Vibrational analysis with scanning probe microscopy

The technique of vibrational analysis with scanning probe microscopy allows probing vibrational properties of materials at the submicrometer scale, and even of individual molecules. This is accomplished by integrating scanning probe microscopy (SPM) and vibrational spectroscopy (Raman scattering or/and Fourier transform infrared spectroscopy, FTIR). This combination allows for much higher spatial resolution than can be achieved with conventional Raman/FTIR instrumentation. The technique is also nondestructive, requires non-extensive sample preparation, and provides more contrast such as intensity contrast, polarization contrast and wavelength contrast, as well as providing specific chemical information and topography images simultaneously.
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