Measure Optical Materials
Use the Solid Sample Holder equipped with the Universal Sample Holder to measure the transmission characteristics of a variety of optical materials. Optical filters such as dichroic mirrors, band pass and Cut-On/Cut-Off filters can be mounted and measured with ease. The collimated beam in the Evolution 300/600 makes the measurement of long or thick optical materials simple and accurate. Samples sizes up to 4 1/4" (120 mm) high and 5 1/2" (137 mm) wide or long can be mounted in the Solid Sample Holder using the Universal Sample Holder. The Universal Sample Holder is great for measuring round, square, or awkwardly shaped samples like eyewear lenses and sections cut from plastic containers.
Measure Large Transparent Solid Materials
The Evolution 300 and 600 instruments feature a wide beam separation of 210 mm. This large distance between the sample beam and reference beam provides the capability to measure large transparent materials. Large materials up to 5 1/2" (137 mm) high and 12 3/4" (322 mm) long can be measured for transmission using the Universal Sample Holder with the Solid Sample holder accessory.
Polarization measurements
Additional sample slides are available for mounting components before or after optical samples. Variable angle polarizers such as Glan-Taylor and Glan-Thompson polarizer are easily mounted. A depolarizer is also available to mount in the second 2" x 3" sample slide. Polarization characteristics of optical materials can be measured easily in the large sample compartment.
Wide Selection of Fixed Angle Specular Reflectance Measurements
These fixed angle SRAs are conveniently designed to fit in the standard 2" x 3" sample slide of the Solid Sample Holder. The series of available fixed angle relative specular reflectance accessories (SRAs) includes 15, 20, 30, 45, and 60 degrees. Since the reflectance characteristics of many optical materials vary with the angle of the incident beam, these fixed angle SRAs offer you the opportunity to measure your sample at a variety of angles that may be important to you. 30°, 45° and 60° reflectance measurements, for example, are of particular interest to users of laser tables who need to know the energy losses as they direct the beam from laser to target.
For near normal or grazing angle specular reflectance measurements, Thermo Scientific offers purpose built accessories on a kinematic baseplate for the Evolution 300/600 spectrophotometers.
For absolute specular reflectance measurements a VN Absolute SRA is available for the Evolution 300.
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