scholarly journals Excitation of high-quality orbital angular momentum vortex beam in adiabatically helical twisted single-mode fiber

2021 ◽  
Author(s):  
Liyong Ren ◽  
Kaili Ren ◽  
Jian Liang ◽  
Li YANG ◽  
Jie Xu ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Vortex Beam ◽  
High Quality

scholarly journals Mode-Selective Photonic Lanterns for Orbital Angular Momentum Mode Division Multiplexing

2019 ◽  
Vol 9 (11) ◽  
pp. 2233 ◽  
Author(s):  
Yan Li ◽  
Yang Li ◽  
Lipeng Feng ◽  
Chen Yang ◽  
Wei Li ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Mode Division Multiplexing ◽  
Momentum Mode ◽  
Phase Differences

We analyze the mode evolution in mode-selective photonic lanterns with respect to taper lengths, affected by possible mode phase differences varying along the taper. As a result, we design a three-mode orbital angular momentum (OAM) mode-selective photonic lantern by optimizing the taper length with mode crosstalk below −24 dB, which employs only one single mode fiber port to selectively generate one OAM mode.

Spin-Orbital Angular Momentum of Light and Its Application

2020 ◽  
Vol 29 (10) ◽  
pp. 28-31
Author(s):  
Teun-Teun KIM
Keyword(s):  
Angular Momentum ◽  
Quantum Entanglement ◽  
Orbital Angular Momentum ◽  
Phase Distribution ◽  
Optical Vortex ◽  
Spin Orbit ◽  
Vortex Beam ◽  
Spin Orbital ◽  
Matter Interaction ◽  
Light Matter Interaction

Like the eletron, the photon carries spin and orbital angular momentum caused by the polarization and the spatial phase distribution of light, respectively. Since the first observation of an optical vortex beam with orbital angular momentum (OAM), the use of an optical vortex beam has led to further studies on the light-matter interaction, the quantum nature of light, and a number of applications. In this article, using a metasurface with geometrical phase, we introduce the fundamental origins and some important applications of light with spin-orbit angular momentum as examples, including optical vortex tweezer and quantum entanglement of the spin-orbital angular momentum.

Determining the Orbital Angular Momentum of Vortex Beam by Young’s Double-Slit Interference Experiment

2008 ◽  
Vol 35 (7) ◽  
pp. 1063-1067 ◽  
Author(s):  
陈子阳 Chen Ziyang ◽  
张国文 Zhang Guowen ◽  
饶连周 Rao Lianzhou ◽  
蒲继雄 Pu Jixiong
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Vortex Beam ◽  
Interference Experiment ◽  
Double Slit

Vortex beam of tilted orbital angular momentum generated from grating

2019 ◽  
Vol 61 (10) ◽  
pp. 105001
Author(s):  
Jing Qiu ◽  
Baifei Shen ◽  
Xiaomei Zhang ◽  
Zhigang Bu ◽  
Longqing Yi ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Vortex Beam

Rapid generation of perfect vortex beam without side lobes

2018 ◽  
Vol 32 (24) ◽  
pp. 1850289
Author(s):  
Siqi Li ◽  
Mulong Liu ◽  
Xingyi Li ◽  
Zhiqiang Ge ◽  
Lingxuan Zhang
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Optical Communication ◽  
Spatial Light Modulators ◽  
Vortex Beam ◽  
Digital Micromirror Device ◽  
Light Modulators ◽  
Rapid Generation ◽  
Rapid Switching ◽  
Topological Charges

We have proposed an approach for rapid generation of perfect vortex beam without side lobes through a digital micromirror device (DMD). Employing this method, the amplitude and phase of far field can be controlled indirectly by changing the rotation state of each unit on the DMD. The perfect vortex beams of equal rings diameter independent of their topological charges are generated commendably and the side lobes are avoided. Moreover, we have demonstrated rapid switching among the generated orbital angular momentum modes at the speed of 10 kHz, which is much faster than that of the usual method realized by spatial light modulators (SLMs). The proposed method is very beneficial for the optical communication and trapping or manipulating the small particle based on orbital angular momentum modes.

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