1D Diffraction Beam Splitter Grating Description

A one-dimensional diffraction beamsplitter grating is an optical element that utilizes periodic microstructures to diffract incident light, splitting a single incoming beam into two or more discrete outgoing beams with specific angles and intensities. The principle is to distribute the energy of the incident light to a specified number of diffractive sub-beams by precisely designing the grating’s period, groove shape and depth.

 

1D Diffraction Beam Splitter Grating Key Features

• Diffraction efficiency is very high, the general diffraction efficiency is more than 70%, can reach 80%-90
• According to the wavelength and used in the choice of fused silica and silicon as a substrate, the current standard products use silicon as a substrate material, designed for different infrared bands, monocrystalline silicon as a substrate for the infrared, especially in the mid- and far-infrared transmittance is high, and can withstand higher thermal loads
• The center wavelengths of 2μm and 4.1μm can be applied to different lasers, such as some fiber lasers, Tm lasers, and mid-infrared gas lasers.
• Adopting the flashing grating design to concentrate the energy to realize 1*5 beam splitting.
• The angle of each diffracted sub-beam relative to the optical axis (or to each other) is fixed at 3.0°, and the angle between each diffracted beam is the same, so that a high degree of stacking and uniformity can be maintained in the beam splitting.

 

One-dimensional diffraction beamsplitter grating product Series

Custom Capabilities – 1D Diffractive Beam Splitter Gratings

 

Coligh Photolithography Manufacturing Process for 1D Diffraction Fractional Gratings

We use photolithography process to fabricate periodic microstructure patterns of 1D diffraction fractional gratings, photolithography process has high precision repeatability, suitable for scientific research and batch use, and free design of the structure, with small cycle and depth errors, we perform one-stop service from design to processing and coating. The following is our manufacturing process:

• Design according to customer’s requirement
• Design mask plate
• Select fused silica or silicon as the substrate
• Perform photolithography and etching
• Post-processing (cleaning, coating, encapsulation, testing

 

One-dimensional diffraction beam splitter grating customization service process

Requirement Submission

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Design & Simulation

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Evaluation & Feasibility Check

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Sample Fabrication

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Performance Testing

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Optimization / Revision

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Volume Production

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Delivery & Shipping

 

 1D Diffraction Beamsplitter Gratings  Application

• Industrial Laser Processing
  In industrial laser processing, the 1D diffraction beam splitter grating can split a single laser beam into multiple laser beams, realizing high-precision multi-beam simultaneous processing and improving processing efficiency.
• Biomedical Imaging
  In in vivo imaging, 1D diffraction beamsplitter gratings can generate multi-focused light sheets to increase imaging speed and reduce phototoxicity.
• LIDAR
  In ToF radar, 1D diffraction beam splitter grating can be used with laser mirrors to realize solid-state LIDAR, providing real-time sensing for autonomous driving.