Amplitude spiral zone plates for generation of optical vortices

Realization of arbitrarily long focus-depth optical vortices with spiral area-varying zone plates

Optics Communications ◽

10.1016/j.optcom.2018.01.012 ◽

2018 ◽

Vol 414 ◽

pp. 128-133 ◽

Cited By ~ 8

Author(s):

Chenglong Zheng ◽

Huaping Zang ◽

Yanli Du ◽

Yongzhi Tian ◽

Ziwen Ji ◽

...

Keyword(s):

Optical Vortices ◽

Zone Plates ◽

Focus Depth

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Multiple optical vortices generated by azimuthal fractal spiral zone plates based on liquid crystal spatial light modulator

Optik ◽

10.1016/j.ijleo.2018.08.092 ◽

2018 ◽

Vol 175 ◽

pp. 344-350 ◽

Cited By ~ 4

Author(s):

Huaping Zang ◽

Chenglong Zheng ◽

Ziwen Ji ◽

Xiaomin Liu ◽

Yongzhi Tian ◽

...

Keyword(s):

Liquid Crystal ◽

Spatial Light Modulator ◽

Optical Vortices ◽

Light Modulator ◽

Zone Plates

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Two tailorable two-arms-cross patterns with equal intensity generated by a composite square zone plate

Modern Physics Letters B ◽

10.1142/s0217984920500724 ◽

2020 ◽

Vol 34 (05) ◽

pp. 2050072

Author(s):

Tian Xia ◽

Shubo Cheng ◽

Shaohua Tao

Keyword(s):

Topological Charge ◽

Construction Method ◽

Zone Plate ◽

Optical Vortices ◽

Laser Alignment ◽

Zone Plates ◽

Potential Applications ◽

Hollow Beams ◽

Spiral Phase

A composite square zone plate (CSZP) is proposed to generate two two-arms-cross patterns with equal intensity and arbitrarily designed axial positions. Moreover, the CSZP with the spiral phase has two square optical vortices located at the arbitrary positions. In addition, we find that the same topological charge of twin square optical vortices for the CSZP follows a modulo-4 transmutation rule. The construction method of proposed zone plates is illustrated in detail. We prove numerically and experimentally that the CSZP and spiral-phase CSZP produce two tailorable two-arms-cross patterns with equal intensity and square optical vortices, respectively. The proposed zone plate can be used to generate hollow beams and have potential applications in infrared antennas and laser alignment systems.

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