• Acta Photonica Sinica
  • Vol. 51, Issue 7, 0751411 (2022)
Xinzhong LI*, Liuhao ZHU, Haihao FAN, Wenjun WEI, Xin MA, Xueyun QIN, Huajie HU, and Yuping TAI
Author Affiliations
  • School of Physics and Engineering,Henan University of Science and Technology,Luoyang,Henan 471023,China
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    DOI: 10.3788/gzxb20225107.0751411 Cite this Article
    Xinzhong LI, Liuhao ZHU, Haihao FAN, Wenjun WEI, Xin MA, Xueyun QIN, Huajie HU, Yuping TAI. Hohmann Transfer Structure Beam and Particle Manipulation(Invited)[J]. Acta Photonica Sinica, 2022, 51(7): 0751411 Copy Citation Text show less

    Abstract

    Since the invention of the laser in the 1960s, the higher power of the laser has led to a better understanding of the interaction between light and matter because of its monochromaticity, directionality, and coherence. Optical tweezers, which won the 2018 Nobel Prize in Physics, are one of the best applications of lasers. In 1976 ASHKIN A discovered that a single beam of light dependent on a gradient force could capture particles. The single beam optical tweezers is widely used in the biological field. In 1992, Orbital Angular Momentum (OAM) was discovered, structural beams carrying OAM have been widely used in the field of particle manipulation and it adds the degree of freedom of lateral manipulation for optical tweezers and has more abundant manipulation modes. However, in the case of the existing structural beams, no matter how the structure of light is changed, due to the nature of OAM, its structure beam will always make particles move along a given orbit in specific applications. The real-time orbital movement of particles is not considered. Therefore, there is an urgent need for a beam with a more abundant mode than the previous single OAM, which can simultaneously exist a variety of different OAMs and control the motion of particles in real-time. The Hohmann transfer was derived by the German engineer Dr. Walter Hohmann in 1925. It is a method to transfer the minimum energy of a satellite between two circular orbits with the same inclination and different altitudes. It’s widely used in the aerospace field. Although particles move in solution, they are also affected by buoyancy and other external forces in addition to the gravity of particles themselves, and the environment they live in is relatively complex, so their motion cannot be compared with the law of planetary motion. However, the orbital switching of Hohmann transfer can still solve the existing problems of structured optical tweezers.To solve this situation, in this paper, the corresponding orbit beam is generated by beam shaping technology, the orbit is transformed into an elliptical orbit by coordinate transformation technology, and finally, the orbit is combined by the Fourier phase shift theorem. A kind of Hohmann Transfer Structured Beam (HTSB) has been proposed via combining beam shaping technology, coordinate transformation technology and Fourier phase shift theorem. This beam has a very abundant mode of regulation and the phase gradient distribution can transfer the particles from the parking orbit to the synchronous orbit. Also, the size, structure, and phase gradient, can be arbitrarily adjusted, in the application can be based on the actual needs of the corresponding adjustment of the beam. Firstly, we analyze the relationship between each orbit of Hohmann transfer, and give the relationship between parameters corresponding to each orbit of HTSB, and the control method. The intensity and phase distribution of the HTSB with increasing radius are simulated. Secondly, we extend the HTSB according to the principle of Hohmann transfer, and discuss the parameter setting and generation method of HTSB with more orbits. The intensity and phase distribution of HTSB with more orbits are simulated. Finally, an optical tweezer experiment is set up, and the HTSB is used to manipulate the polystyrene particles. We have designed two experiments, the first experiment is using a fixed HTSB to make the particles from the parking orbit transfer to synchronous orbit, and the second experiment is using dynamic switch cover template on spatial light modulator particles in a week and a half after parking orbits respectively, choose an appropriate time to transfer orbit switch mask template, rotating again after a week and a half, Transfer to synchronous orbit and rotate once in synchronous orbit. Moreover, the beam can do a lot more. It can reverse the fixed orbit and the synchronous orbit by changing the topological charges; the velocity of particles moving between orbits can be controlled by adjusting the topological charge of each orbit; it can control the way the particles are transferred by rotating the beam as a whole. Therefore, this research proves the feasibility of Hohmann transfer in the microscopic field and has great significance in the field of optical micromanipulation.
    Xinzhong LI, Liuhao ZHU, Haihao FAN, Wenjun WEI, Xin MA, Xueyun QIN, Huajie HU, Yuping TAI. Hohmann Transfer Structure Beam and Particle Manipulation(Invited)[J]. Acta Photonica Sinica, 2022, 51(7): 0751411
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