China 1064nm Circular Top-Hat Beam Shaping DOE | Φ50µm Flat-Top Spot for Infrared (IR) Lasers Manufacture and Factory

1064nm Circular Top-Hat Beam Shaping DOE | Φ50µm Flat-Top Spot for Infrared (IR) Lasers

Beam‑shaping DOEs create flat‑top beams characterized by uniform intensity, steep transitions at the boundaries, and shapes defined by the end‑user. Owing to this versatility, they rank among the most widely utilized diffractive optical elements available today.

Category	Parameter	Specification
System Parameters	Design Wavelength [nm]	1064
	Beam Quality (M²)	≤ 1.2
	Input Beam Size (e⁻²) [mm]	8
	Focus Module Focal Length [mm]	75
DOE Parameters	DOE Clear Aperture [mm]	Φ20
	DOE Mechanical Outer Diameter [mm]	Φ25.4 × 2
	Order	16
Output Parameters	Shaped Beam Shape	Circular
	Shaped Beam Size [µm]	Φ50
	Shaped Beam Uniformity (RMS)	> 90%
	Total Diffraction Efficiency (e⁻²)	> 90%

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A specific light intensity distribution is produced at a chosen plane (commonly located at infinity or at the lens focal plane) through interference effects. This is made possible by engineering the diffraction orders and the object distance. The underlying mechanism begins with the micro‑structured surface of the DOE, which alters the transmitted phase of the laser beam, thereby applying phase modulation to the incident wavefront and dispersing it into multiple orders.

Featuring a Φ25.4 mm outer diameter (1‑inch) and a Φ12 mm clear aperture, this high‑performance DOE is designed to fit standard optomechanical mounts without modification. When used with 532 nm green lasers, it reshapes the raw Gaussian beam into a Φ60 µm flat‑top circle marked by sharp edges, uniform irradiance, and minimal intensity spikes.

The 16‑level surface structure delivers a total diffraction efficiency of >90% and uniformity of >90% RMS, making it well suited for precision processing of thin films, micromachining, and medical device production.

$Advanced 532nm Diffractive Optical Element for Precision Circular Top-Hat Beam Generation$