Bessel Beam Generation behind a Fiber with a Holographic Optical Element

Bessel beams, due to their extended depth of focus, are found useful in many applications. In this example, we show how to generate Bessel beam from the output of a single-mode fiber. Instead of the typical approach with a collimation lens and an axicon, we designed a holographic optical element (HOE) that incorporates both the lens and axicon functions in one. Such an optical setup is built in VirtualLab Fusion. We check the function of the HOE and examine the evolution of the field behind the HOE.

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