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Edinburgh Biosciences and Delta Optical Thin Film Jointly Announce a Laser Attenuator Based on Linear Variable Filter Technology

Edinburgh Biosciences and Delta Optical Thin Film announce the release of a new type of laser attenuator that is based on Delta’s proprietary linear variable filter technology (patent pending).

This radically new and patent pending solution to laser attenuation has some remarkable features and benefits compared to conventional laser attenuators. The Laser Optical Multilayer Attenuator (LOMA) is based on optical thin film coating technology with no absorption and withstands high laser power.

The laser beam is transmitted without distortion of beam profile with no extra optics required. Even with short laser pulses down to 70 fs no pulse broadening is observed. The optical coating is designed for a wide range of laser wavelengths and works independent of polarisation.

For safety reasons, the rejected power is directly dumped by reflection within the unit. A linear drive of the wedged optical thin film coating provides continuous control of laser output from 98% to less than 5%.

The mounting of the unit includes adjustable input and output apertures. The unit contains compact adjustable mounting and housing and is very simple to operate. For a demonstration visit Delta Optical Thin Film’s booth B1/538 at LASER World of PHOTONICS.

A Linear Variable Filter (LVF) is made from wedged optical thin film coatings, whose spectral properties vary nearly linearly along the long side of the filter. It is possible to adjust the position of the edge wavelength by sliding the filter with respect to the incident light. The Laser Optical Multilayer Attenuator makes use of this property using a customised version of an LVF design.

About Delta Optical Thin Film

Delta Optical Thin Film A/S is a leading supplier of advanced, high performance linear variable filters commonly used in a variety of biomedical imaging applications including fluorescence microscopy, flow cytometry, monochromators and micro-plate readers among others.

Delta Optical Thin Film also provides; single, multiband, laserline and broadband band pass filters; long pass filters; short pass filters; notch filters; dichroic and polarizing beam splitters along with other custom coated optical components.

Delta Optical Thin Film offers a wide range of high efficiency durable ultra-hard coated filters that have set the standard for high performance and precise operation. With its unique design tools and decades of experience, Delta is able to provide highly competitive standard filters and customized filters and optical components to exacting customer specific applications.

About Edinburgh Biosciences

Edinburgh Biosciences Ltd seeks to exploit advances in optical science and technology in the area of bioscience applications.

Its founders have an outstanding record of academic and innovative achievement coupled with experience of developing new businesses.

EBS is currently developing a new generation of spectrometers based on a combination of narrow wavelength sources with novel dynamic wavelength selectors. Target markets involve the detection of contamination in surgical instruments and diagnosis of cataracts. We are also investigating new techniques of interest to the food industry.

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