31 Instruments Help European Space Agency to Test High-Power Laser Diodes for Space Missions
The European Space Agency (ESA) is using Yokogawa digital oscilloscopes, including the recently launched DL850 ScopeCorder, at its European Space Research and Technology Centre (ESTEC) in Noordwijk, the Netherlands, to carry out key evaluation tests on different high-power laser systems for use on space satellites. Typical laser system applications in space include precision range measurements, radar-like 'lidar' systems to gather a complete picture of surface terrain or three-dimensional samplings of planetary atmospheres, and laser-based space communications with high bandwidth and minimal electromagnetic interference. ESTEC is the largest ESA research centre in Europe, and is responsible for developing and managing all types of space missions for scientific exploration, satellite-based navigation and communication, and earth observation purposes. It operates an environmental test centre for spacecraft, with supporting engineering laboratories specialised in systems engineering, components and materials, including an opto-electronics laboratory focusing on the performance verification of active optical instruments, including high-power laser systems and components of solid-state lasers. The laboratory includes a Class 10,000 (ISO 7) clean room, two fully equipped optoelectronics laboratories designed for the operation of Class 4 laser systems, workshop and storage rooms. It has the equipment necessary to measure the optical spectrum, beam profile, power and energy, stability and modulation response, in free space as well as optical fibres.
The Yokogawa test equipment - initially a DL6154 oscilloscope, which is currently being supplemented by a DL850 ScopeCorder - is used specifically to complement test set-ups developed for investigating laser-induced contamination or endurance testing on laser diodes used as pump sources for solid-state lasers. These tests involve the recording of large amounts of data over considerable periods of time: several weeks or even months in some cases. The key electrical parameters involved in the tests are voltage and current in well-controlled environmental conditions. Moreover, for endurance testing, the instruments need to be able to automatically detect and store very short and intermittent transient events such as current spikes. In addition, the DL6154 is used to monitor the pulse shape of an injection seeded high power solid state laser used in the context of laser induced contamination and damage experiments. This equipment has proven to be able to successfully detect the intra-pulse modulation at laser output occurring when the seeding mechanism is not effective, and therefore gives reliable and crucial information on the laser behaviour.
Circle no. 391 Multi Nationals Offered OEM and Private Labeling Services
Loba Chemie Pvt. Ltd, one of the largest growing suppliers of laboratory chemicals and fine chemicals, opens its door to multi nationals for OEM and Private Labeling services. The company is based in Mumbai, India and has been servicing this industry for more than 45 years. The company also provides many of the products in semi bulk packing options to its customers based in the USA, Europe and the Middle East. Loba now focuses to build the supplies to customers located in the Far East sector – providing them with high quality products at highly competitive rates as compared to the European products. The companies follows high level of quality control and regulations required for packing of Hazardous Chemicals and meet the quality of any leading suppliers around the globe. The company is also maintaining the distribution of its own BRAND – LOBA CHEMIE through a team of over 200 plus distributors and over 40 stock points located in more than 100 countries. The services make life simpler for many top brands that face regulatory problems and high cost involved for working with Hazardous chemicals by providing them complete finished solution from product to packing and labeling. Loba Chemie Pvt. Ltd. also plans to launch many new products in the near future, which include Standard Solutions, AAS and ICP Standards, Range of High Purity Solvents – Pesticide Residue Analysis, Environmental, LC-MS, and Peptide Synthesis Grade. The company will offer the same for OEM at the beginning of 2012.
Circle no. 392 ADVERTORIAL Highly Dynamic Temperature Control The new PRESTO® from Julabo represents the state-of-the-art for modern laboratories. The first models in this redesigned line of temperature-control instruments are the air-cooled A30 and A40 as well as the
water-cooled W40. These instruments cover a working temperature range of -40 to +250°C with 1.2 kW of cooling capacity and 2.8 kW of heating capacity. Maximum heating capacity can also be adapted to fluctuations in the mains power supply. Highly efficient components give these instruments the ability to compensate for exothermic and endothermic reactions with extraordinary speed. The new PRESTO® units are extremely robust and work reliably even if the ambient temperature climbs as high as +40 °C.
Magnetically-coupled pumps in the PRESTO® units are powerful and maintenance-free. Lab users benefit from high flow rates, constant pressure and a controlled build-up of pump pressure. The pump in the
A30 has a rated pressure of 0.5 bar and a maximum flow rate of 20 Lpm. The A40 and W40 have more powerful pumps with pressure up to 1.7 bar and a flow rate as high as 40 Lpm. The operator can adjust pump capacity by selecting one of five stages or by entering a specific pressure. The closed pumping loop isolates the heat transfer liquid from ambient air, preventing penetration of moisture and oxidation.
The integrated 5.7-inch industrial-grade touch panel is one of the identifying characteristics of the new PRESTO®. It gives the user a clear and well-organised view of important information while greatly improving user-friendliness. Fingertip control via the new touchscreen makes it incredibly easy to operate the new PRESTO®
units.
Password management for one administrator and up to two additional levels of authorisation makes it easier to manage laboratory procedures.
For example, the new PRESTO® units use one and the
same heat transfer liquid across the entire working temperature range. The filling opening for the liquid is easily accessible on the top side of the unit.
Once in operation, the new PRESTO® units are whisper
quiet and barely audible in a laboratory. Like all JULABO instruments, the new PRESTOs®
have closed
side panels without ventilation slits. This reduces to a minimum the amount of space needed to operate the units because any other lab instruments may be placed directly next to the PRESTO®
.
A retractable handle and integrated rollers make it easy for one person to move the new PRESTO® wheeled cart.
across networks and in superordinated like a
Multiple interfaces permit remote control of the PRESTO®
control systems. The integrated Ethernet interface provides complete access to all of PRESTO® operating functions.
’s
Yet another control option is the USB interface, a first in dynamic temperature control systems. When combined with the proven Julabo WirelessTEMP solution, it permits completely wireless control of the instrument.
Julabo instruments are reliable. They comply with stringent national, European, and international standards as well as specific requirements at the place of operation. Julabo units complete numerous tests during every phase of production.
Circle no. 393 The New Generation „Everything perfect in its kind
has to transcend its own kind.“ Johann Wolfgang von Goethe, German poet
Thermodynamic Power. Working temperature range from -40 to +250 °C. Powerful pump. Strong and reliable up to ambient temperatures of +40 °C. Simple operation and easy monitoring via industrial touch panel. What more could you ask for? For further information please visit
www.julabo.de.
Circle no. 394
LAB ASIA - MARCH/APRIL 2011 - LABORATORY PRODUCTS
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