Patent
Device for generating rotary compound vortex light beams
TLDR
In this article, a device for generating rotary compound vortex light beams is proposed, which is characterized by a light source emerged by a laser light source sequentially pass through a light beam amplifier and a beam splitting mirror.Abstract:Â
The utility model relates to a device for generating rotary compound vortex light beams, which is technically characterized in that light beams emerged by a laser light source sequentially pass through a light beam amplifier and a beam splitting mirror, one light beam of the two light beams processed by beam splitting is modulated by a first spatial light modulator after the light beam passes through a second half-transmitting half-reflecting mirror, and then the light beam is filtered by a first Fourier spatial filter; the other light beam is modulated by a second spatial light modulator after the light beam is reflected by a first half-transmitting half-reflecting mirror, then the light beam is filtered by a second Fourier spatial filter, and frequency shift is generated by a frequency shifting component; and the coaxial superposition of two beams of light is realized by a beam combining mirror so as to obtain and generate the rotary compound vortex light beams According to the device provided by the utility model, the rotating speeds and the speckle patterns of the compound vortex light beams can be conveniently controlled; and the light beams generated by using the device for generating the rotary compound vortex light beams can be used as an optical wrench, and particles are operated and rotated by the specific orbital angular momentum characteristic of the optical wrenchread more
Citations
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Patent
Device and method for detecting topological charge number of vortex beams based on improved Mach-Zehnder interferometer
TL;DR: In this article, an improved Mach-Zehnder interferometer was used for detecting the topological charge number of vortex beams. But the method is not suitable for the detection of the topology of the vortex beams, since it is complex to operate and low in reliability.
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Rotator angular velocity measuring system based on vortex beams
TL;DR: In this article, a rotator angular velocity measuring system based on vortex beams is described, which is based on a Doppler frequency shift principle and direction characteristics of Poynting vectors of the vortex beams.
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Method of vortex light beam generating system with tunable orbital angular momentum state
Yin Xiaoli,Hao Ji,Sang Hongqing,Han Jingjing,Xu Can,Yang Xuan,Guo Xinglan,Li Li,Xin Xiangjun,Yu Zhongxiu +9 more
TL;DR: In this article, a vortex light beam generating system with a tunable orbital angular momentum state was proposed, where the topology loads of outgoing light beams are increased by an order every time the incident light beams pass through an order of a spiral phase plate, and when a control signal was set, the light beams reflected at the optical grating crystal position and entered the circulation light path.
Patent
Method for generating femtosecond vortex beams with high spatial intensity contrast
TL;DR: In this paper, a method for generating femtosecond vortex beams with high spatial intensity contrast was proposed, where a noncollinearly pumped HG beam femtocond laser generates femto-cond HG beam and a cylindrical lens mode converter converts the femtoCond HG beam to femto cond vortex beam.
Patent
Full Poincare light beam generating device and full Poincare light beam generating method
TL;DR: In this paper, a beam expanding mirror and a fork-shaped grating are used to generate Gaussian light beams and Laguerre light beams, respectively, by virtue of regulating the first attenuation slice and the second attenuation slices.
References
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Patent
Method and apparatus for modifying the spread of a laser beam
TL;DR: In this paper, the authors present an apparatus and method for modifying the spread of a laser beam, which comprises a laser source operable to generate a beam having a flux that exceeds a predetermined value, and an optical train operating to modify the beam such that the flux of the beam through a predetermined aperture does not exceed the predetermined value.
Patent
Use of a focusing vortex lens as the objective in spiral phase contrast microscopy
TL;DR: In this article, a focusing vortex lens, defined by a diffractive spiral zone plate (SZP), is used for the objective for the phase contrast microscope, which imparts a helical phase to incident illumination to image the specimen with spiral phase contrast.
Patent
Satellite-type helical multi-core fiber optical micro-tweezers capable of achieving rotation of small particles and preparation method thereof
Libo Yuan,Yu Zhang,Yang Jun +2 more
TL;DR: In this article, a satellite-type helical multi-core fiber optical micro-tweezers capable of achieving the rotation of small particles and a preparation method thereof is presented.
Patent
Device for generating rotary combined vortex light beam by adopting transmission-type space light modulator
TL;DR: In this paper, a rotary combined vortex light beam was generated by using a transmission-type space light modulator, where the light beam emerging from a laser light source sequentially penetrates through a light beam amplifier and a beam splitter mirror.
Patent
Complex optical vortex generating device
TL;DR: In this paper, a complex optical vortex generating device is described in which laser light emitted by a laser light source passes a light beam amplifier, a first reflector and a second reflector, and forms vortex light under the control of a main shutter and by the aid of a vortex modulator.