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Rochon polarizing beamsplitters are made of the high-grade crystalline calcite free of any strie, bubbles or other defects. Together with high-precise orientation of the crystal on X-ray goniometer we achieve an exelent extinction ration that is better than 10-6. These features allows an usage for various precision optical instrumentation and laser application.
Design of Rochon polarizing beamsplitters offers splitting of ordinary and extraordinary beams, where the first pass the polarizer undeviated while the second is deviated. The deviation angle is dependent on a cut angle of Rochon parts and on light wavelength.
| material |
calcite |
| spectral range |
300 - 2700 nm |
| extiction ratio |
better than 10-6 |
| prismatic deviation |
better than 3 arc minutes |
| surface quality |
40 - 20 scratch and digs |
| surface flatness |
lambda/4 |
| divergence angle |
10° |
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Senarmont polarizing beamsplitters are made of the high-grade crystalline calcite free of any strie, bubbles or other defects. Together with high-precise orientation of the crystal on X-ray goniometer we achieve an exelent extinction ration that is better than 10-6. These features allows an usage for various precision optical instrumentation and laser application.
Design of Senarmont polarizing beamsplitters offers splitting of ordinary and extraordinary beams, where the first pass the polarizer undeviated while the second is deviated. The deviation angle is dependent on a cut angle of Senarmont parts and on light wavelength.
| material |
calcite |
| spectral range |
300 - 2700 nm |
| extiction ratio |
better than 10-6 |
| prismatic deviation |
better than 3 arc minutes |
| surface quality |
40 - 20 scratch and digs |
| surface flatness |
lambda/4 |
| divergence angle |
10° |
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Wollaston polarizing beamsplitters are made of the high-grade crystalline calcite free of any strie, bubbles or other defects. Together with high-precise orientation of the crystal on X-ray goniometer we achieve an exelent extinction ration that is better than 10-6. These features allows an usage for various precision optical instrumentation and laser application.
Wollaston polarizers can separate an incident beam into two deviated rays: extraordinary and ordinary ray with a deviation angle nearly symmetrical about the input beam axis (approximately twice the deviation of Rochon or Senarmont polarizing beam splitters). The deviation angle is dependent on wavelength and cut angle of Wollaston beamsplitter parts.
| material |
calcite |
| spectral range |
300 - 2700 nm |
| extiction ratio |
better than 10-6 |
| prismatic deviation |
better than 3 arc minutes |
| surface quality |
40 - 20 scratch and digs |
| surface flatness |
lambda/4 |
| divergence angle |
10° |
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Glan - Foucalt polarizing prisms are made of the high-grade crystalline calcite free of any strie, bubbles or other defects. Together with high-precise orientation of the crystal on X-ray goniometer we achieve an exelent extinction ration that is better than 10-6. These features allows an usage for various precision optical instrumentation and laser application.
Glan - Foucalt polarizing prisms halves are separated by an air gap. Orientation of optical axes in these two halves causes lower transmittion than in Glan - Taylor polarizing prisms because a feature of Brewster angle can not be used.
| material |
calcite |
| spectral range |
300 - 2700 nm |
| extiction ratio |
better than 10-6 |
| prismatic deviation |
better than 3 arc minutes |
| surface quality |
40 - 20 scratch and digs |
| surface flatness |
lambda/4 |
| divergence angle |
10° |
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Glan - Taylor polarizing prisms are made of the high-grade crystalline calcite free of any strie, bubbles or other defects. Together with high-precise orientation of the crystal on X-ray goniometer we achieve an exelent extinction ration that is better than 10-6. These features allows an usage for various precision optical instrumentation and laser application.
Glan - Taylor polarizing prisms halves are separated by an air gap that is oriented with respect to incoming beam close to Brewster's angle. This increase a transmission without sacrificing acceptance field angle.
We produce two ranges of Glan - Taylor polarizing prisms. The first one is with no escape windows and is suitable for low power applications where the rejected beam is not required. The Hi-Power form with two escape windows has been designed for use with high peak pulse or high average cw power applications.
| material |
calcite |
| spectral range |
300 - 2700 nm |
| extiction ratio |
better than 10-6 |
| prismatic deviation |
better than 3 arc minutes |
| surface quality |
40 - 20 scratch and digs |
| surface flatness |
lambda/4 |
| divergence angle |
10° |
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Glan - Thompson polarizing prisms are made of the high-grade crystalline calcite free of any strie, bubbles or other defects. Together with high-precise orientation of the crystal on X-ray goniometer we achieve an exelent extinction ration that is better than 10-6. These features allows an usage for various precision optical instrumentation and laser application.
These polarizers have the widest field angle of any crystal polarizers. They can be produced in a range of diameters with regard to meet customs needs. The field angle varies with respect to cut angle so that the bigger cut angle the wider field angle for the specific wavelength.
| material |
calcite |
| spectral range |
300 - 2700 nm |
| extiction ratio |
better than 10-6 |
| prismatic deviation |
better than 3 arc minutes |
| surface quality |
40 - 20 scratch and digs |
| surface flatness |
lambda/4 |
| field angle |
30° @ 600 nm for 73° cut angle |
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Glan - Thompson polarizing prisms are made of the high-grade crystalline calcite free of any strie, bubbles or other defects. Together with high-precise orientation of the crystal on X-ray goniometer we achieve an exelent extinction ration that is better than 10-6. These features allows an usage for various precision optical instrumentation and laser application.
Frank - Ritter polarizing prisms are similar to Glan - Thompson polarizing prisms but the orientaion of optical axes in two prism's halves. The orientation of outgoing linearly polarized beam is diagonal to prism profile. The advantage of Frank - Ritter polarizing prisms is in saving of an expensive crystalline calcite material.
| material |
calcite |
| spectral range |
300 - 2700 nm |
| extiction ratio |
better than 10-6 |
| prismatic deviation |
better than 3 arc minutes |
| surface quality |
40 - 20 scratch and digs |
| surface flatness |
lambda/4 |
| angular field |
30° @ 600 nm for 73° cut angle |
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Nikol polarizing prism is in fact a calcite rhombohedral crystal whose entrance surfaces are grinded down about 7° to 68°, splitted diagonally and then jointed again used a glue. Ordinary beam udergoes total reflection at calcite - glue interface and is reflected to the side of the prism, whereas extraordinary beam is not reflected and leaves the prism as linearly polarized light.
Advantage of Nikol polarizing prisms is wide field angle, oblique input and output surface and reratively easy manufacture process. Disadvantage is a lower extiction ratio.
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