LBTEK-Your Trusted Partner For Optoelectronic Experiments!

Product Description

Liquid crystal polymer/N-BK7 window or UVFS window, sandwich flat structure
Liquid crystal molecular fast axis with different periodic arrangements depending on beam splitting design, λ/2 retardation
One-dimensional or two-dimensional, odd or even uniform beam splitting available
High diffraction efficiency, high beam splitting uniformity, high separation angle accuracy, low invalid diffraction order noise impact
Operating wavelength: 532 nm, 1064 nm, beam splitting modes: 1×3, 1×9, 2×3
Custom sizes with parameter specifications available

LBTEK Polymer Beamsplitter (Liquid Crystal Beamsplitter, LCBS) DOEs are fabricated using N-BK7 or UVFS glass substrates and Liquid Crystal Polymers (LCP) materials, presenting a typical sandwich flat-plate structure as single-wavelength devices. The phase structure of the polymer beamsplitter DOE is designed based on the principles of diffractive optics according to requirements such as the desired beam-splitting pattern, spot separation interval, or beam divergence angle, achieving the intended splitting effect by distributing energy across corresponding diffraction orders. Compared to cascaded grating beamsplitters, polymer beamsplitter DOEs impose no requirements on the polarization state of incident light and can achieve odd-number splitting. In comparison to Dammann grating beamsplitters, polymer beamsplitter DOE offers superior diffraction efficiency and beamsplitter spot uniformity. Relative to traditional etched DOE, polymer beamsplittier DOE can more easily achieve multi-level phase variations, thereby attaining higher diffraction efficiency while significantly reducing process complexity. Thanks to its advantages—high diffraction efficiency, excellent splitting uniformity, precise divergence angle control, low noise from ineffective diffraction orders, and simplified fabrication—polymer beamsplitter DOE finds applications in parallel laser processing, optical sensing, medical aesthetics, and so on. LBTEK offers standard polymer beamsplitter DOE products operating at 532 nm and 1064 nm wavelengths, with splitting patterns including 1×3, 1×9, and 2×3, and substrate materials available in N-BK7 and UVFS. Beyond standard products, LBTEK supports flexible customization of parameters. For specific customization needs, please contact LBTEK Technical Support.

Attribute

Clear ApertureØ21.5 mm

Surface finish (scratches/pits)40/20

ReflectivityRavg < 0.5% (0° incidence)

Beam splitting uniformity>95 %

Polymer Beamsplitter DOEs, N-BK7 Substrates, 2D Beam Splitting

Liquid Crystal Polymer/N-BK7 Window Plates
Clear Aperture: Ø21.5 mm
2×3 uniform Beam Splitting Effect Available

LBTEK 2D polymer beamsplitter DOE is fabricated on a 1.6 mm thick N-BK7 window substrate, featuring a double-layer substrate with a single-layer liquid crystal polymer film structure. It maintains uniform λ/2 retardation across the entire clear aperture, with standard products achieving a 2×3 2D beam-splitting effect. The product is supplied as a bare die without mechanical housing and can be used with 1-inch rotation mounts to adjust the geometric orientation of the split beams.

2×3 Two-dimensional polymer beam splitting DOE phase diagram

	Product Model	Operating Wavelength	Beam splitting mode	Separation angle	Unit Price	Compare	Lead Time
	LCBS25-532-0203-025015	532 nm	2×3	0.25 °×0.15 °	$1300.22		5 weeks
	LCBS25-1064-0203-050030	1064 nm	2×3	0.5 °×0.3 °	$1300.22		5 weeks

Polymer beamsplitter DOEs, N-BK7 Substrate, One-dimensional Beam Splitting

Liquid Crystal Polymer/N-BK7 Window
Clear Aperture: Ø21.5 mm
1×3 and 1×9 Uniform Beam Splitting Effects Available

The LBTEK one-dimensional polymer beamsplitter DOE is fabricated on a 1.6 mm thick N-BK7 window substrate, featuring a double-layer substrate with a single-layer liquid crystal polymer film structure. It maintains a uniform λ/2 retardation across the entire clear aperture. Standard products can achieve 1×3 and 1×9 one-dimensional beam-splitting effects. The product is supplied as a bare die without mechanical housing and can be used with 1-inch rotation mounts to adjust the geometric orientation of the split beams.

1×3, 1×9 One-dimensional polymer beam splitting DOE phase diagram

Product Model	Operating Wavelength	Beam splitting mode	Separation angle	Unit Price	Lead Time
LCBS25-532-0103-000050	532 nm	1×3	0.5 °	$1040.18	4 weeks
LCBS25-532-0109-000015	532 nm	1×9	0.15 °	$1040.18	5 weeks
LCBS25-1064-0103-000100	1064 nm	1×3	1 °	$1040.18	4 weeks
LCBS25-1064-0109-000030	1064 nm	1×9	0.3 °	$1040.18	5 weeks

Polymer Beamsplitter DOEs, UVFS Substrate, One-dimensional Beamsplitters

LCP/UVFS Window Plates
Clear Aperture: Ø21.5 mm
1×3 and 1×9 Uniform Beam Splitting Effects Available

The LBTEK one-dimensional polymer beamsplitter DOE is fabricated on a 3 mm thick fused silica window, featuring a double-layer substrate with a single-layer liquid crystal polymer film structure. It maintains a uniform λ/2 retardation across the entire clear aperture. Standard products can achieve 1×3 and 1×9 one-dimensional beam-splitting effects. The product is supplied as a bare chip without a mechanical housing and can be used with a 1-inch rotation mount to adjust the geometric orientation of the split beams.

1×3, 1×9 One-dimensional polymer beam splitting DOE phase diagram

Product Model	Operating Wavelength	Beam splitting mode	Separation angle	Unit Price	Lead Time
LCBS25H-532-0103-000050	532 nm	1×3	0.5 °	$1248.19	4 weeks
LCBS25H-532-0109-000015	532 nm	1×9	0.15 °	$1248.19	5 weeks
LCBS25H-1064-0103-000100	1064 nm	1×3	1 °	$1248.19	4 weeks
LCBS25H-1064-0109-000030	1064 nm	1×9	0.3 °	$1248.19	5 weeks

Polymer Beamsplitter DOEs, UVFS substrates, 2D beam splitting

LCP/UVFS Window Plate
Clear Aperture: Ø21.5 mm
2×3 Uniform Beam Splitting Effect Available

The LBTEK 2D polymer beam-splitting DOE is fabricated on a 3 mm thick fused silica window, featuring a double-layer substrate with a single-layer liquid crystal polymer film structure. It maintains uniform λ/2 retardation across the entire clear aperture, with standard products achieving a 2×3 2D beam-splitting effect. The product comes as a bare die without mechanical housing and can be used with 1-inch rotation mounts to adjust the geometric orientation of the split beams.

2×3 Two-dimensional polymer beam splitting DOE phase diagram

	Product Model	Operating Wavelength	Beam splitting mode	Separation angle	Unit Price	Compare	Lead Time
	LCBS25H-532-0203-025015	532 nm	2×3	0.25 °×0.15 °	$1560.26		5 weeks
	LCBS25H-1064-0203-050030	1064 nm	2×3	0.5 °×0.3 °	$1560.26		5 weeks