High Power Beam Splitting DOE DOE25Q-355-BS1X3-DEG00020

Overview

The DOE25Q-355-BS1X3-DEG00020 is a high-power beam-splitting diffractive optical element (DOE) in UV fused silica. A surface-relief phase structure distributes the incident energy over the diffraction orders to produce a 1×3 split pattern with a 0.04 ° full beam-splitting angle (0.02° separation angle) at 355 nm. The element measures 16×16 mm, installed in a Ø25.4×4 mm mechanical housing and offers a 15x15 mm clear aperture, with >85 % diffraction efficiency and >95 % beam-splitting uniformity.

Applications

• Parallel laser processing
• Optical sensing and detection
• Optical medical aesthetics
• Microscopic detection

Construction & Performance

The diffractive microstructure is etched directly into the UV fused silica substrate, so the element carries no absorbing coating layer and stays compatible with high-power ultraviolet sources. Beam-splitting angle error is held to <1 % and transmittance at the working wavelength is >98 % over a 60/40 surface quality. Key specifications for this model:

• Component size: 16×16 mm, installed in a Ø25.4×4 mm mechanical housing.
• Operating Wavelength: 355 nm
• Clear Aperture: 15x15 mm
• Beam Splitting Angle (Full Angle): 0.04 °
• Component Material: UV fused silica
• Surface Quality (Scratch/Dig): 60/40
• Transmittance (@working wavelength): >98 %
• Beam splitting mode: 1×3
• Separation angle: 0.02°
• Beam splitting angle error (full angle): <1 %
• Diffraction efficiency: >85 %
• Beam splitting uniformity: >95 %

Storage & Handling

Handle the DOE by its edges and keep the patterned face clean. Blow off loose particles before any contact cleaning, then use optical-grade solvent with lens tissue only when necessary. Keep the incident beam within the clear aperture and centred on the diffractive structure, and store the element in its original container in a clean, dry place away from direct sunlight and elevated temperature.