&lt;title&gt;Design of diffractive beam-shaping elements for nonuniform illumination waves&lt;/title&gt;

Hermerschmidt, Andreas; Eichler, Hans Joachim; Stephan, T.; Schwartz, J.

doi:10.1117/12.310592

Cited by 7 publications

(2 citation statements)

References 8 publications

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“…Eikonal equations [25] are used to connect the input to the output zones. The phase distribution f(x, y), required to produce the desired output is obtained by solving these equations [23,26].…”

Section: Engineering the Axial Intensitymentioning

confidence: 99%

Diffractive optics for axial intensity shaping of Bessel beams

Dharmavarapu

Bhattacharya

Juodkazis

2018

J. Opt.

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Bessel beams (BBs) appear to be immune to diffraction over finite propagation distances due to the conical nature of light propagation along the optical axis. This offers promising advantages in laser fabrication. However, BBs exhibit a significant intensity variation along the direction of propagation. We present a simple technique to engineer the axial intensity of the BBs over centimeter-long propagation distances without expansion of the incoming laser beam. This method uses two diffractive optical elements (DOEs), one converts the input Gaussian intensity profile to an intermediate intensity distribution, which illuminates the second DOE, a binary axicon. BBs of a desired axial intensity distribution over a few centimeters length can be generated.

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Section: Engineering the Axial Intensitymentioning

confidence: 99%

Diffractive optics for axial intensity shaping of Bessel beams

Dharmavarapu

Bhattacharya

Juodkazis

2018

J. Opt.

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“…Eikonal equations [19] are used to connect the input to the output zones. The phase distribution φ(x, y), required to produce the desired output is obtained by solving these equations [16,20].…”

Section: Simulation: a Linearly Increasing Axial Intensitymentioning

confidence: 99%

Engineering the axial intensity of Bessel beams

Dharmavarapu¹,

Juodkazis²,

Bhattacharya³

2017

Preprint

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Bessel beams (BBs) appear immune to diffraction over finite propagation distances due to the conical nature of light propagation along the optical axis. This offers promising advantages in laser fabrication. However, BBs exhibit a significant intensity variation along the direction of propagation. We present a simple technique to engineer the axial intensity of the BB over centimeters-long propagation distances without expansion of the incoming laser beam. This method uses two diffractive optical elements (DOEs), one converts the input Gaussian intensity profile to an intermediate intensity distribution, which illuminates the second DOE, a binary axicon. BBs of desired axial intensity distribution over few centimeters length can be fabricated.

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Light shaping from a physical-optics point of view

et al. 2020

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In the design of optical element for light shaping, a geometric-optics assumption is usually used, where the validity of the assumption is rarely discussed in literature. In this work, the field tracing techniques for modeling light-shaping systems are presented, which reveals the optical element resulted from those geometric-base algorithm is not always accurate enough for the design task. An example is demonstrated with the functional embodiment of the element. The simulation result shows that diffraction effect may occur, especially in paraxial situation. However, the designed result start with the assumption is well-introduced initial guess for further optimization with the iterative Fourier transform algorithm (IFTA).

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<title>Design of diffractive beam-shaping elements for nonuniform illumination waves</title>

Cited by 7 publications

References 8 publications

Diffractive optics for axial intensity shaping of Bessel beams

Diffractive optics for axial intensity shaping of Bessel beams

Engineering the axial intensity of Bessel beams

Light shaping from a physical-optics point of view

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