LBTEK-Your Trusted Partner For Optoelectronic Experiments!

Product Description

Liquid crystal polymer/N-BK7 window plate or UVFS window plate material, Sandwich flat plate structure
The fast-axis orientation of liquid crystal molecules exhibiting different periodic variations depending on the design, with λ/2 retardation
Capable to generate square flat-top beams, circular flat-top beams, or line-shaped flat-top beams
High diffraction efficiency, High uniformity, High damage threshold, Sharp edges, Customizable shape and size
Operating wavelength: 532, 1064 nm; Output beam shapes: square, circular, line-shaped
Flexible customization of parameters and specifications available

The LBTEK Polymer Homogenizing DOE is a flat optical element designed based on the principles of diffractive optics, composed of a liquid crystal polymer (LCP) film and two N-BK7 or UVFS window substrates. By calculating the design phase through point-to-point mapping based on known incident light parameters, lens focal length, and desired output light parameters, the LCP film introduces the designed geometric phase distribution to shape and homogenize Gaussian (TEM00, M²<1.3) incident light. With advantages such as high uniformity, high transmittance, high damage threshold, and sharp edges, it holds significant application potential in various fields, including laser medical aesthetics, laser processing, and surface treatment. Compared to traditional refractive homogenizing devices, the Polymer Homogenizing DOE offers benefits such as a flat structure for easy integration, high energy efficiency, and flexible parameter design. In contrast to array lens phase homogenizers, the Polymer Homogenizing DOE achieves excellent homogenization with a single element, producing output spots with sharper edges, though it requires more precise incident light parameters. The Polymer Homogenizing DOE is often used in conjunction with focusing lenses for more flexible beam shaping and homogenization. Therefore, our standard products are all focusing beam shapers, designed to work with standard lenses (default f=100 mm). Available options include working wavelengths of 532 nm and 1064 nm, output spot shapes of square, circular, or line types, and substrate materials of N-BK7 glass or UV-grade fused silica. In addition to standard products, LBTEK also offers flexible customization of parameters. For specific customization needs, please contact LBTEK Technical Support.

Attribute

Incident beam qualityM2<1.3

Incident light eccentricity (XY displacement)±5% (× incident spot diameter)

Incident light spot polarization stateUniform polarization state

Incident light tilt±5 °

Unevenness (RMS)<10 %

Diffraction efficiency (FWHM)>90 %

Polymer Homogenization DOEs, N-BK7 Substrate, Square Type

LCP\/N-BK7 Window Plate
Clear Aperture: 15×15 mm
Converts TEM00 Gaussian Beam into Square Uniform Spot

LBTEK Polymer Homogenizer 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. It provides uniform λ/2 retardation across the entire clear aperture, capable of transforming incident TEM00 Gaussian beams into square-shaped uniform spots. The product comes without a mechanical housing and has a D-shaped edge on one side, which is parallel to one edge of the output square spot for convenient customer installation and use.

DOE25-532-6-FTS200 under linear polarizer

Product Model	Operating Wavelength	Incident spot diameter	Effective Focal Length (EFL)	Output beam spot size	Unit Price	Lead Time
DOE25-532-6-FTS50	532 nm	6 mm	100 mm	50×50 μm	$1300.22	4 weeks
DOE25-532-7-FTS30	532 nm	7 mm	100 mm	30.3×30.3 μm	$1300.22	4 weeks
DOE25-532-7-FTS76	532 nm	7 mm	100 mm	75.8×75.8 μm	$1300.22	4 weeks
DOE25-1064-6-FTS80	1064 nm	6 mm	100 mm	80×80 μm	$1300.22	4 weeks
DOE25-1064-6-FTS200	1064 nm	6 mm	100 mm	200×200 μm	$1300.22	4 weeks
DOE25-1064-7-FTS30	1064 nm	7 mm	100 mm	30.3×30.3 μm	$1300.22	4 weeks
DOE25-1064-7-FTS76	1064 nm	7 mm	100 mm	75.8×75.8 μm	$1300.22	4 weeks

Polymer Homogenization DOEs, N-BK7 Substrate, Circular Type

Liquid Crystal Polymer/N-BK7 Window Plate
Clear Aperture: Ø15 mm
Converts TEM00 Gaussian Beam into Circular Uniform Spot

LBTEK polymer homogenizing 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. It provides uniform λ/2 retardation across the entire clear aperture, capable of transforming incident TEM00 Gaussian beams into circular uniform spots. The product comes without a mechanical housing and has a D-shaped edge on one side for convenient customer installation and use.

DOE25-532-6-FTC200 under linear polarizer

Product Model	Operating Wavelength	Incident spot diameter	Effective Focal Length (EFL)	Output beam spot size	Unit Price	Lead Time
DOE25-532-6-FTC50	532 nm	6 mm	100 mm	Ø50 μm	$1300.22	4 weeks
DOE25-1064-6-FTC80	1064 nm	6 mm	100 mm	Ø80 μm	$1300.22	4 weeks
DOE25-1064-6-FTC200	1064 nm	6 mm	100 mm	Ø200 μm	$1300.22	4 weeks

Polymer Homogenization DOEs, N-BK7 Substrate, Single-line Type

Liquid Crystal Polymer/N-BK7 Window Plate
Clear Aperture: 15×15 mm
Converts TEM00 Gaussian Beam into a Uniform Line-shaped Spot

LBTEK Polymer Homogenizer 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. It provides uniform λ/2 retardation across the entire clear aperture, capable of transforming incident TEM00 Gaussian beams into a uniform one-dimensional line-shaped spot. The line length is designed as specified, while the line width reaches the diffraction limit. The product comes without a mechanical housing and has a D-shaped edge on one side, which is parallel to the emitted line-shaped spot for convenient customer installation and use.

DOE25-532-6-FTL250 under linear polarizer

Product Model	Operating Wavelength	Incident spot diameter	Effective Focal Length (EFL)	Output beam spot size	Unit Price	Lead Time
DOE25-532-6-FTL250	532 nm	6 mm	100 mm	250 μm	$1040.18	4 weeks
DOE25-532-6-FTL1000	532 nm	6 mm	100 mm	1000 μm	$1040.18	4 weeks
DOE25-1064-6-FTL250	1064 nm	6 mm	100 mm	250 μm	$1040.18	4 weeks
DOE25-1064-6-FTL1000	1064 nm	6 mm	100 mm	1000 μm	$1040.18	4 weeks

Polymer Homogenization DOEs, UVFS Substrate, Square Type

Liquid Crystal Polymer\/Fused Silica Window Plate
Clear Aperture: 15×15 mm
Converts TEM00 Gaussian Beam Into Square Uniform Spot

The LBTEK polymer homogenizing DOE is fabricated on a 3 mm thick fused silica window substrate, featuring a double-layer substrate with a single-layer liquid crystal polymer film. It provides uniform λ/2 retardation across the entire clear aperture, capable of shaping and homogenizing incident TEM00 Gaussian beams into square-shaped uniform spots. Compared to DOE homogenizers with N-BK7 substrates, the fused silica-based DOE homogenizer is more suitable for high-power laser applications.

DOE25H-532-6-FTS200 under linear polarizer

Product Model	Operating Wavelength	Incident spot diameter	Effective Focal Length (EFL)	Output beam spot size	Unit Price	Lead Time
DOE25H-532-6-FTS50	532 nm	6 mm	100 mm	50×50 μm	$1560.26	4 weeks
DOE25H-532-7-FTS30	532 nm	7 mm	100 mm	30.3×30.3 μm	$1560.26	4 weeks
DOE25H-532-7-FTS76	532 nm	7 mm	100 mm	75.8×75.8 μm	$1560.26	4 weeks
DOE25H-1064-6-FTS80	1064 nm	6 mm	100 mm	80×80 μm	$1560.26	4 weeks
DOE25H-1064-6-FTS200	1064 nm	6 mm	100 mm	200×200 μm	$1560.26	4 weeks
DOE25H-1064-7-FTS30	1064 nm	7 mm	100 mm	30.3×30.3 μm	$1560.26	4 weeks
DOE25H-1064-7-FTS76	1064 nm	7 mm	100 mm	75.8×75.8 μm	$1560.26	4 weeks

Polymer Homogenization DOEs, UVFS Substrate, Circular Shape

Liquid Crystal Polymer\/Fused Silica Window
Clear Aperture: Ø15 mm
Converts TEM00 Gaussian Beam into Circular Uniform Spot

The LBTEK polymer homogenizing DOE is fabricated on a 3 mm thick N-BK7 window substrate, consisting of a double-layer substrate with a single-layer liquid crystal polymer film. It provides uniform λ/2 retardation across the entire clear aperture, capable of transforming incident TEM00 Gaussian beams into circular, homogenized spots. Compared to N-BK7 substrate-based DOE homogenizers, fused silica substrate-based DOE homogenizers are more suitable for high-power laser applications.

DOE25H-532-6-FTC200 under linear polarizer

Product Model	Operating Wavelength	Incident spot diameter	Effective Focal Length (EFL)	Output beam spot size	Unit Price	Lead Time
DOE25H-532-6-FTC50	532 nm	6 mm	100 mm	Ø50 μm	$1560.26	4 weeks
DOE25H-1064-6-FTC80	1064 nm	6 mm	100 mm	Ø80 μm	$1560.26	4 weeks
DOE25H-1064-6-FTC200	1064 nm	6 mm	100 mm	Ø200 μm	$1560.26	4 weeks

Polymer Homogenization DOEs, UVFS Substrate, Single-line Pattern

Liquid Crystal Polymer\/Fused Silica Window Plate
Clear Aperture: 15×15 mm
Converts TEM00 Gaussian Beam into a Uniform Line-shaped Spot

The LBTEK polymer homogenizing DOE is fabricated on a 3 mm thick N-BK7 window substrate, consisting of a double-layer substrate with a single-layer liquid crystal polymer film. It provides uniform λ/2 retardation across the entire clear aperture, capable of transforming incident TEM00 Gaussian beams into a uniform line-shaped spot. The line length matches the design specification, while the line width reaches the diffraction limit. Compared to DOE homogenizers with N-BK7 substrates, those with fused silica substrates are more suitable for high-power laser applications.

DOE25H-532-6-FTL250 under linear polarizer

Product Model	Operating Wavelength	Incident spot diameter	Effective Focal Length (EFL)	Output beam spot size	Unit Price	Lead Time
DOE25H-532-6-FTL250	532 nm	6 mm	100 mm	250 μm	$1248.19	4 weeks
DOE25H-532-6-FTL1000	532 nm	6 mm	100 mm	1000 μm	$1248.19	4 weeks
DOE25H-1064-6-FTL250	1064 nm	6 mm	100 mm	250 μm	$1248.19	4 weeks
DOE25H-1064-6-FTL1000	1064 nm	6 mm	100 mm	1000 μm	$1248.19	4 weeks