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| Coad | 670436 | Substrate | Liquid Crystal Polymer / N-BK7 | |
| Type | Polymer Beam-Splitting DOE | Operating Temperature | -20 - 80℃ | |
| Dimension(mm) | 25.4 x 3.2 | Clear Aperture | 21.5mm | |
| Wavelength(nm) | 532 | Diffraction Efficiency | 93.83% | |
| Beam Split Mode | 1×9 | Beam Split Uniformity | >95% | |
| Separation Angle（°） | 0.15 | Transmittance | >97% | |
| Surface Quality | 40-20 | Transmission Wavefront Deviation | ＜λ/4@633nm | |
| Coating Type | AR Coating | Coating Specifications | Ravg＜0.5%@400-700nm |
LBTEK Polymer Beam-Splitting DOE (Liquid Crystal Beam Splitter, LCBS) is fabricated from N-BK7 or UVFS glass substrates combined with liquid crystal polymer (LCP), forming a typical sandwich flat-plate structure. It is designed as a single-wavelength device. The phase structure is engineered according to the desired splitting pattern, spot spacing, or beam separation angle, based on diffractive optical principles. By distributing energy among specific diffraction orders, the DOE achieves the required beam-splitting effect.
Compared with cascaded grating splitters, the polymer beam-splitting DOE has no requirement for the input beam polarization state and supports odd-number beam splitting. Compared with Dammann gratings, it delivers higher diffraction efficiency and better uniformity of split spots. Compared with conventional etched DOEs, it allows easier implementation of multi-order phase variations, resulting in higher diffraction efficiency and reduced fabrication complexity.
Thanks to its high diffraction efficiency, excellent beam uniformity, precise separation angle, low noise from unwanted diffraction orders, and simplified manufacturing, the polymer beam-splitting DOE is suitable for parallel laser processing, optical sensing, biomedical applications, and laser aesthetics. LBTEK offers standard products with operating wavelengths of 532 nm and 1064 nm, beam-splitting modes of 1×3, 1×9, and 2×3, and substrate options of N-BK7 or UVFS.
LBTEK 1D Polymer Beam-Splitting DOE is fabricated on a 1.6 mm thick N-BK7 window with a double-substrate structure and a single liquid crystal polymer (LCP) film. It provides uniform λ/2 retardation across the entire clear aperture, with standard products enabling 1×3 and 1×9 one-dimensional beam-splitting effects. The device is supplied as a bare chip without mechanical housing and can be used with a 1-inch rotation mount to adjust the geometric orientation of the split beams.
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