China 355nm Diffractive Optical Element (DOE) for Square Flat-Top Beam Shaping | 140µm Uniform Spot, >90% Efficiency Manufacture and Factory

$355nm Diffractive Optical Element (DOE) for Square Flat-Top Beam Shaping | 140µm Uniform Spot, >90% Efficiency Featured Image$

$355nm Diffractive Optical Element (DOE) for Square Flat-Top Beam Shaping | 140µm Uniform Spot, >90% Efficiency$

355nm Diffractive Optical Element (DOE) for Square Flat-Top Beam Shaping | 140µm Uniform Spot, >90% Efficiency

Beam-shaping DOEs are among the most widely used diffractive optical elements (DOEs). Their function is to produce flat-top beams with uniform energy distribution, steep edges, and user-defined shapes.

Category	Parameter	Specification
System Parameters	Design Wavelength [nm]	355
	Beam Quality (M²)	≤ 1.2
	Input Beam Size (e⁻²) [mm]	6
	Focus Module Focal Length [mm]	420
DOE Parameters	DOE Clear Aperture [mm]	Φ18
	DOE Mechanical Outer Diameter [mm]	Φ25.4 × 2
	Order	16
Output Parameters	Shaped Beam Shape	Square
	Shaped Beam Size [µm]	140 × 140
	Shaped Beam Uniformity (RMS)	> 90%
	Total Diffraction Efficiency (e⁻²)	> 90%

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By means of microstructures, the transmission phase of light passing through the diffractive optical element (DOE) is altered, thereby enabling phase modulation of the incident light. This causes the light to be dispersed into different diffraction orders. Leveraging this characteristic, by configuring the diffraction orders and object distances, interference occurs at a given plane (typically at infinity or the focal plane of a lens), resulting in a specific light intensity distribution.