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CODIXX colorPol

®

- Nano-Technology Glass Polarizers

? Wavelength selectable polarization in the UV, VIS, and IR ? High resolution customized patterns ? Can be handled and processed like glass ? High contrast ? Operating temp. –50 °C ... +400 °C ? Resistant to UV radiation, chemicals, and scratches

The CODIXX AG, a new German company founded in 1998, has developed a unique technology for the production of dichroic glass polarizers in the last two years. Based on soda-lime display glass containing metal- lic silver nano particles a process has been developed to stretch the silver clusters and to give them all a uniform orientation caus- ing the polarizing effects. colorPol

Fig. 1 absorption spectra of soda-lime-glass containin g s p herical silve r -cluste r Fig. 2 extinction of uniformly oriented prolate silver particles
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-polarizers are flat and thin like foils, can be processed like silicon wafers, are resistant to UV radiation, solvents, and temperatures from very low tem- peratures up to +400

Fig. 3 various colorPol® - Polarizer

°C

. A unique feature of colorPol

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-polarizers is the chance to produce patterned polarizers. Based on the special properties of the colorPol

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-polarizers CODIXX can produce polarizers with patterns of neighboring areas with a different orientation of the polarization and/or wavelength of maximum po- larization (color in the VIS range). The dimension of the areas can be scaled down to the micron range. Samples of patterned colorPol

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-polarizers are shown in Fig. 5-6. The sample in Fig. 5 is a glass wafer with chips con- taining 2 ranges with differ- ent orientation of polariza- tion. Fig. 6 shows a polar- izer with 3 ranges of polari- zation shifted by 60

o Fig 5: colorPol
® S: ‘L-shaped’ structures polarizing perpendicular to each other for mounting on a silicon-chip after dicing

. The wavelength of maximum polarization can be chosen freely for each range.

Fig 6: colorPol
® S: pie-shaped patterns with 3 directions of polarization diplaced 60° to each other

colorPol

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