piezosystem jena have announced a new piezo based collimator system for X-Ray techniques.
Current techniques in X-Ray microscopy, crystallography and small angle x-ray scattering require extremely well-collimated beams. In order to achieve the best signal to noise ratio in an x-ray system, the aperture size should be as closely matched as possible to the sample size.
Most X-ray systems use a pinhole aperture that has been drilled or laser ablated from a tungsten or tantalum disk of material. In practice this means that for every new sample size, the pinhole should be removed and a new size inserted.
A solution was developed in cooperation with Lawrence Berkeley National Lab.Based on two piezo driven slit sy stems of the series PZS 4 (part number: O-101-xx), a collimator for X-Ray techniques was made. The PZS stages are mounted of 90° in respect to each other. Because of the high resolution piezo element, the slit edges can be adjusted precisely to the required size.
With a resolution of <8 nm the system is the most accurate variable aperture system commercially available. The open architecture of the PZS slit system design allows for easy integration into a variety of X-Ray systems. A V-clamp holder allows the customer to add his own or our accessories. The entire system can be made vacuum compatible.
From Quantronix : 2-dimensional infrared spectroscopy is of fundamental interest to vibrational spectroscopists, as it allows observation of coupling between various normal modes. The results obtained from performing the experiment provide useful information ranging from energy redistribution within a molecular system due to coupling between different states, to determination of angles of transition dipoles associated with the modes.
The technique is performed using femtosecond lasers; in the frequency-domain scheme, a single narrowband pump pulse is used to excite a vibrational mode within a system, and a second broadband probe pulse explores the state of the system at a given time delay after the pump pulse. A 2-dimensional plot is obtained by graphing the probe spectrum as the pump frequency is varied. In the time-domain scheme, an initial pump pulse prepares a coherence between the vibrational modes of the system, and a second pulse stores the phase information induced by the pump pulse within populations of states. A final pulse produces another coherence, which, once in phase again, emits an "echo" pulse that, when heterodyned with a local oscillator, reveals intensity and phase information on the vibrational modes' interactions. The resulting data, compared to a linear infrared absorption spectrum, shows not only the ground state information along the diagonal of the plot, but the coupling and relationships of the various modes to each other.
Ocean Optic's new bluLoop Light Source is a small but amazing LED source that is the perfect companion for measuring colour and more.
bluLoop features four tunable LEDs that allow unparalleled balancing of spectral output. It delivers higher reliability of estimated color values, has low heat consumption and has a longer lifetime than typical halogen sources.
bluLoop also has good response and favorable spectral characteristics in the Visible range when compared with tungsten halogen sources.
MyLight , Semrock 's new online filter modeling tool, provides users with the ability to characterize optical filters under varying theoretical conditions in real time. Interested in seeing how a Semrock catalog filter behaves under a particular angle of incidence, polarization or cone half angle? MyLight can provide you with the theoretical answers by simply entering your parameters and selecting “Generate Plot.” MyLight data can also be saved, re-drawn and printed.
Traditionally, optical filter data was presented at normal angles of incidence, average polarization assuming collimated incident light. But what if your system utilized a tilted filter and/or a cone of illumination? What if you were interested in the possibility of angle tuning a filter to optimize it to your specifications? In the past, you had to contact the manufacturer and wait for an answer. With MyLight, you can input your conditions, click Generate Plot, and immediately evaluate that filter’s theoretical data set. Designing and evaluating interference optical filters has never been easier. MyLight puts the power of optical filter modeling and evaluation at your fingertips. MyLight may be accessed from each filter's specific page, above the actual measured data spectra.
Semrock are the leading supplier of optical filters. They offer a wealth of essential filters for fluorescence microscopy, fluorescence instruments, raman spectroscopy, biomedical optics and laser/optical systems. Contact Lastek today for further information.
Thin-film interference filters are usually the ideal solution for wavelength selection in optical systems, due to their exceptionally high transmission, very steep spectral edges and blocking over OD6 or higher over wide spectral regions for maximum noise suppression. Until now though, they have had one major drawback: they are essentially fixed in their spectral characteristics. Semrock 's revolutionary new Versachrome filter changes all this. Now for the first time: thin film filters that are tunable over a wide range of wavelengths, simply by adjusting the angle of incidence, and with essentially no change in spectral performance. Wide tunability is possible, up to 60°, for both edge and bandpass filters, as shown below.
The Versachrome filter was one of the ten winners of the Second Annual Microscopy Today Innovation Awards. Contact us today to learn more, or for more detailed local pricing. Or click for further information, including a discussion on Spectral Imaging with VersaChrome Filters, below.
Continuum have released the DLS Connect , a versatile digital command and control center for your Continuum Powerlite DLS high energy Nd:YAG laser. This compact, powerful remote offers a convenient user interface in addition to comprehensive systems diagnostics.
Figure 1: Splash is suppressed when the ambient air pressure is reduced. A drop 3.4mm in diameter of ethanol colliding with a surface at a speed of 3.74 ms-2 splashes at atmospheric pressure (top panel) but spreads smoothly at 0.172 atmospheres (bottom panel). Pictures taken from Xu,. Zhang, and Nagel (2005)
Quantum Composersmodel 9528 Digital Delay Pulse Generators has been incorporated for use as a timing system at Brown University, of Providence, RI, in a research project which has begun to reveal the hidden mysteries of how liquid droplets splash.
The mechanism behind liquid droplet splashing on a smooth dry surface is not completely understood. It was recently discovered that reducing ambient pressure can suppress splashing altogether. Shreyas Mandre, Assistant Professor, School of Engineering, Brown University and colleagues have created an experiment setup to explore this phenomenon.
Brown’s system utilizes a Quantum Composers 9528 Digital Delay Generator to facilitate experiment timing. First, the pulse generator is triggered by the droplet disrupting an optical circuit consisting of a continuous laser source and a photodiode detector. Next, a suitable delay is added to allow the droplet to fall into position.
The FemtoFiber smart family is TOPTICA ’s new series of ultrafast fibre lasers. These systems are dedicated to applications ranging from biopho-tonics to terahertz generation and two-photon polymerization. Optimized for a compact footprint uniting optics and electronics in one box, these robust all-fibre lasers are the perfect choice for flexible OEM integration.
The lasers of the new FemtoFiber smart family transfer the concept of the successful FemtoFiber pro into compact systems, designed for specific ultrafast applications. Based on polarization-maintaining fibres and saturable absorber (SAM) modelocking technology, TOPTICA’s FemtoFiber lasers offer reliable performance and hands-off operation. The new FemtoFiber smart lasers are optimized re-garding footprint (122x202x69 mm3) and pricing to meet the key require-ments of OEM integrators. Including all optics and control electronics in one single box, the lasers of the FemtoFiber smart family are the most compact ultrafast lasers available on the market. All models with wavelength above 1000 nm have fibre coupled outputs and offer either FC/APC receptacles or fibre pigtails.
Flight Deck Test of CE-certified NoIR Laser Shield
High-powered hand-held laser pointers have become a significant hazard to law-enforcement officers and pilots, as they can induce a temporary and dazzling flash/glare blindness. The sudden loss of vision from even a low-power laser pointer illumination can be disorienting and debilitating, yet standard sunglasses and typical safety goggles provide virtually no protection from these hazards.
NoIRGlareShields™ laser pointer filters provide sufficient protection from the disabling effects of intentional or incidental laser pointer hits without compromising the wearer’s ability to perform on the job. All NoIR GlareShields™ provide full daylight UV and glare protection along with laser safety. But since the flash-blindness effect of a laser pointer illumination is much more pronounced at night, NoIR offers two GlareShields™ designed for use in low light conditions. GlareShields™ optimize protection from the beam with Optical Densities (ODs) between 1-2.5 (absorbing 90-99.5% of the beam energy), while still allowing visibility of the beam spot (for point source location), all without compromising visual acuity or display panel color recognition.
OpticsShop is Lastek's own consolidated shipping service from the USA, offering savings for internet orders on optics, photonics and more. We ship volume so we can ship cheaper. There are all kinds of benefits to OpticsShop, as hundreds of satisfied customers have found. In the current climate of uncertainty, here's a guaranteed way to save money. Call Caroline on 1800 88 2215 to find out more.
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Lastek is the exclusive distributor in Australia and New Zealand for more than fifty leading international laser, optic, detection, spectroscopy and imaging manufacturers. See our complete list of principals here. Our multi-disciplined team is the most experienced in the industry. We can help you with everything from the simplest lens, to the most complex laboratory or industrial installation. Please call us today to discuss your optical requirements, or for information on any of the products or services on these pages.
