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BEAM Co.’s photoalignment materials are based on azobenzene. Using different molecular structures allows us to offer materials optimized for different radiation wavelengths. The alignment axis is perpendicular to polarization and is reversible when used with liquid crystals. The materials were tested to provide high resolution patterns required for polarization gratings and spiral phase waveplates.
The technology involves spin coating and solvent evaporation that can be performed even at room temperature.
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SPECIFICATIONS
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| Item code |
λmax [nm] |
E [J/cm2] |
| λ = 458 nm |
λ = 325 nm |
λ = 365 nm |
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PAAD-22
|
367
|
0.6
|
0.3
|
0.5
|
|
PAAD-23
|
403
|
4.5
|
7.2
|
9
|
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PAAD-26
|
429
|
3
|
12.6
|
14.4
|
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PAAD-27
|
393
|
0.3
|
2.7
|
1.1
|
|
PAAD-29
|
404
|
3
|
12.6
|
No
|
E – exposure energy, λ max – peak absorption wavelength, λ – exposure wavelength
The materials are shipped in a solution ready for spin coating.
Minimum order: 2g.
Price: $240/g for up to 10 g,
$180/g for orders over 10 g.
References
- S.R. Nersisyan, N.V. Tabiryan, D.M. Steeves, B.R. Kimball, V.G. Chigrinov, and H.-S. Kwok, “Study of azo dye surface command photoalignment material for photonics applications”, Appl. Opt. 49 (10), 1720-1727 (2010).
- S.R. Nersisyan, N.V. Tabiryan, D.M. Steeves, B.R. Kimball, “The principles of laser beam control with polarization gratings introduced as diffractive waveplates”, Proc. SPIE 7775, 77750U-1-10 (2010).
- S.R. Nersisyan, B.R. Kimball, D.M. Steeves,N.V. Tabiryan, “Technology of Diffractive Waveplates for Polarizer-Free Displays”, IMID/IDMC/ASIA DISPLAY 2010 DIGEST, pp. 277-278.
- N.V. Tabiryan, S.R. Nersisyan, D.M. Steeves and B.R. Kimball, “The Promise of Diffractive Waveplates”, Optics and Photonics News, 21 (3), 41-45 (2010).
- S.R. Nersisyan, N.V. Tabiryan, D.M. Steeves, B. Kimball, “Optical Axis Gratings in Liquid Crystals and their use for polarization insensitive optical switching”, Journal of Nonlinear Optical Physics & Materials, 18 (1), 1–47 (2009).
- Uladzimir Hrozhyk, Sarik Nersisyan, Svetlana Serak, Nelson Tabiryan, Landa Hoke, Diane M. Steeves, and Brian R. Kimball, “Optical switching of liquid-crystal polarization gratings with nanosecond pulses”, Optics Letters, 34 (17), 2554-2556 (2009).
- Sarik R. Nersisyan, Nelson V. Tabiryan, Diane M. Steeves, and Brian R. Kimball, “Characterization of optically imprinted polarization gratings”, Appl. Optics 48 (21), 4062-4067 (2009).
- S.R. Nersisyan, N.V. Tabiryan, L. Hoke, D.M. Steeves, B. Kimball, “Polarization insensitive imaging through polarization gratings”, Optics Express, 17 (3), 1817-1830 (2009).
- S. Nersisyan, N. Tabiryan, D.M. Steeves, B.R. Kimball, “Fabrication of liquid crystal polymer axial waveplates for UV-IR wavelengths”, Opt. Express, 17 (14), 11926-11934 (2009).
- Sarik R. Nersisyan and Nelson V. Tabiryan, “Polarization Imaging Components Based on Patterned Photoalignment”, Mol. Cryst. Liq. Cryst., 489, 156 [482]–168 [494] (2008).
- S. Serak, N. Tabiryan, and B. Zeldovich, "High-efficiency 1.5 μm thick optical axis grating and its use for laser beam combining," Opt. Lett. 32, 169-171 (2007).
- H. Sarkissian, S.V. Serak, N.V. Tabiryan, L.B. Glebov, V. Rotar, B.Ya. Zeldovich, “Polarization-controlled switching between diffraction orders in transverse-periodically aligned nematic liquid crystals”, Optics Letters 31 (15), 2248-2250 (2006).
750
950
770
BEAM Co., 809 S. Orlando Ave., Suite I , Winter Park , FL ,
32789 , USA 407-629-1282
Tel. 877-803-6579 (toll-free)
Fax 407-629-0460
e-mail: sales@beamco.com
http://www.beamco.com/
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