Diffractive Optical Elements (DOEs) For Beam Splitting

Source: Laser Components USA, Inc.

Diffractive Optical Elements (DOEs) For Beam Splitting

Diffractive optical elements (DOEs) from LASER COMPONENTS are designed to be used as multi-spot beam splitters in beam shaping, and beam profile modifications with lasers and high power lasers. Using diffractive elements for beam splitting is advantageous in the instance of needing one element to produce several beams, or when very exact power separation is required. DOEs can also achieve precise positioning to create holes at clearly defined and accurate distances.

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The following DOEs are available from LASER COMPONENTS:

NEW High Efficiency Double Spot (HEDS) Beam Splitter

The new HEDS beam splitter is designed to separate an incoming laser beam into two identical beams with 97% efficiency, resulting in more than 48% with each beam. This splitter is available in wavelengths between 193 nm and 10.6 μm. HEDS is very sensitive to centering, but slight changes have no effect on spot shape or overall efficiency.

Multi-Spot Element

This diffractive element is used to split a collimated incident beam into several beams that are equal in intensity and angles to one another. One-dimensional (1D) elements are used to split beams along a straight line, while two-dimensional (2D) elements produce beams arranged into a matrix (ex: 2 x 2 or 3 x 3 spots).

Beam Sampler Element

Beam Sampler elements are gratings that are used for inline monitoring of high power lasers. Their design enables the ± first diffraction order to be used for beam measurement, and higher diffraction orders to be used for measurement with lower intensities. Each intensity is significantly lower than that of the main beam and can be custom designed.

Multi-Focus Element

A multi-focus element is used to create several focus points along its optical axis. These elements are ideal for use in sensor technology and ophthalmology. Several simultaneously emerging focal points can also be used to optimize results in material processing.

For more information on each type of available diffractive element, download the datasheets and application notes above.

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