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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Through phase modulation induced by its microstructures, a DOE changes the transmission phase of the illuminating beam and diffracts it into various orders. By manipulating the order composition and the propagation distance, these orders can be made to interfere at a desired plane (e.g., infinity or a lens back focal plane), giving rise to the targeted intensity profile.