HOME All Fiber Doppler Velocity Interferometer Systems a new kind of VISAR Series G Unamplified Single Photodetectors for light levels of 0.1 mW and higher Series F Amplified Single Photodetectors for light levels down to nanowatts Series J Amplified Differential Photodetectors like Series F single detectors, but only the difference is amplified Power Supply recommended for DC coupled PDMs and all Differentials International Order Policies

Up Grade Your FDVI Would you like to be rid of the uncertain normalization to a reference beam? Have you been struggling to get decent signals from your target surface? Do you need to resolve events on the sub-sub-nanosecond time scale? For a limited time we are offering upgrades at our cost to owners of our earlier models. These upgrades will transform older FDVIs to the latest high power, EDFA enhanced, full quadrature, push pull Mark IV-3000 System. Upgrade of Older Mark II and Mark III Systems: These systems had a simpler interferometer with only two or three output signals: “sin” “cos” and “reference.” A visible light source was provided but it was not built in and required fibres to be re-connected for use. The power system used older gel-cell Pb-acid batteries with limited lifespans. And because they lack the newly available EDFA, they required target surfaces with reasonably good reflectivity. The upgrade fixes all of these shortcomings and includes all of the following: Replacement of the original 10 mW laser with the new ultra-narrow linewidth 10 mW laser Replacement of the 2 channel with Reference interferometer with a full-quadrature push pull unit with four outputs, +sin, -sin, +cos, -cos Addition of an EDFA to boost the returned light signal by +30 dB. This will give you whopping big signal to noise ratios with target surface reflectivities of 0.1% and lower. Upgrade of the battery and charging system to higher power latest technology Nickel Metal Hydride. Inclusion of a visible Red laser within the FDVI chassis and fiber-coupled into the system to provide a "pilot beam" – no more fiddling with connectors. Complete re-packaging in a 1U Rack Mount chassis with new front panel controls One additional Series G Photodetector Module Software for full-quadrature push pull analysis Cost will depend on exactly what your old system is, but will generally be much less than the cost of a new Mark IV-3000 System. Please Inquire for a Quotation Upgrade of More Recent Mark 4 Push Pull Systems There are many of these systems out there. They have the full quadrature push-pull interferometer, but may lack some of the latest developments such as the internal visible aiming or “Pilot” source, and they run on older gel-cell Pb-acid batteries and as before, they require fairly good target surfaces in order to get strong signals for analysis. The upgrade fixes all of these shortcomings and includes all of the following: Replacement of the original 10 mW laser with the new ultra-narrow linewidth 10 mW laser Addition of an EDFA to boost the returned light signal by +30 dB. This will give you whopping big signal to noise ratios with target surface reflectivities of 0.1% and lower. Upgrade of the battery and charging system to higher power latest technology Nickel Metal Hydride. Inclusion of a visible Red laser within the FDVI chassis and fiber-coupled into the system to provide a "pilot beam” – (if not already there) Complete re-packaging in a 1U Rack Mount chassis with new front panel controls Latest Software for full-quadrature push pull analysis Cost will depend on exactly what your old system is, but will generally be very much less than the cost of a new Mark IV-3000 System. Please Inquire for a Quotation Send us your old FDVI system with a purchase order for the upgrade, and we'll have you back in operation with the best in Doppler Velocity Interferometry in less than six weeks. Martin, Froeschner & Associates 14300 Mines Road, Livermore, California, 94550 USA tel: (+1) 925 989 4930 fax: (+1) 925 449 4647 email: sales@mfaoptics.com ©2010 Updated: June 2010 [Back to Top]

Contact Us: tel: +1 925 989 4930 fax: +1 925 449 4647 email: sales@mfaoptics.com Martin, Froeschner & Associates 14300 Mines Road Livermore, California 94550 USA Papers by Users of our FDVI Upgrade your FDVI to a New Mark IV or Mark IV-3000 System See us in the new Physics Today Buyer's Guide under VISAR and Photodetectors and our company profile. See us in these Buyer’s Guides: Global Spec Laser Focus World Photonics Spectra