Angular accelerating white light

Angela Dudley; Christian Vetter; Alexander Szameit; Andrew Forbes

doi:10.1117/12.2187377

31 August 2015 Angular accelerating white light

Angela Dudley, Christian Vetter, Alexander Szameit, Andrew Forbes

Proceedings Volume 9581, Laser Beam Shaping XVI; 958104 (2015) https://doi.org/10.1117/12.2187377
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

Significant interest has been devoted to tailoring optical fields that transversely accelerate during propagation in the form of Airy, Weber and Mathieu beams. In this work, we introduce a new type of optical field that exhibits controlled angular acceleration during propagation which is achieved by superpositions of Bessel beams with non-canonical phase functions. We demonstrate these angular accelerating fields by modulating the phase and amplitude of a supercontinuum source with the use of a phase-only spatial light modulator (SLM). We illustrate that by considering only the first diffraction order when the SLM is encoded with a blazed grating, the SLM is capable of tailoring the spatial profile of broadband sources without any wavelength dependence. By digitally simulating free-space propagation on the SLM, we compare the effects of real and digital propagation on the angular rotation rates of the resulting optical fields for various wavelengths. The development of controlled angular accelerating optical fields will be useful in areas such as particle manipulation, plasma control, material processing and non-linear optics.

Citation Download Citation

Angela Dudley, Christian Vetter, Alexander Szameit, and Andrew Forbes "Angular accelerating white light", Proc. SPIE 9581, Laser Beam Shaping XVI, 958104 (31 August 2015); https://doi.org/10.1117/12.2187377

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KEYWORDS

Spatial light modulators

Spiral phase plates

Wave propagation

Bessel beams

Superposition

Light wave propagation

Beam shaping

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