Free regulating method and device of diffraction-free self-accelerating Airy beams

Abstract

The invention discloses a free regulating method of diffraction-free self-accelerating Airy beams. The method includes following steps: 1), emitting Gaussian beams by a laser device, and collimating and expanding the Gaussian beams; 2), projecting the collimated and expanded Gaussian beams onto a splitting mirror for splitting; 3), irradiating the split beams into a spatial light modulator loaded with a phase graph in advance for phase modulation; 4), enabling the beams after going through phase modulation to pass a Fourier lens for Fourier transformation to obtain Airy beams; 5), irradiating the Airy beams into a gradient refractivity medium to enable the Airy beams to be transmitted along free tracks. The invention further relates to a regulating device of the diffraction-free self-accelerating Airy beams.

Description

technical field [0001] The invention belongs to the field of optical technology and beam control, and in particular relates to a method and device for free regulation of a non-diffraction self-accelerating Airy beam. Background technique [0002] In 1979, British scholar Berry and American scholar Balazs made an important prediction in the field of quantum mechanics: the Schrödinger equation has a wave packet solution that follows the Airy function, and the Airy wave packet has many singular properties, such as no diffraction, self-transverse Acceleration, self-healing, etc. Since then, the Airy beam has attracted the attention of many scientific researchers in the world, thus truly opening up the unprecedented prosperity of people's research on the Airy beam. Because of its many fascinating and singular properties, people have been trying to use Airy beams as a trapping light source in optical tweezers technology in the field of life medicine since the beginning of researc...

AI Technical Summary

Problems solved by technology

However, the Airy beam propagation trajectory always behaves as a quadratic parabolic trajectory, and it is impossible to freely control the beam to propagate along any trajectory.

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