604-nm high-order vortex beams directly generated from a Pr:YLF laser with a cavity-loss-induced gain switching mechanism

2020 ◽  
Vol 127 ◽  
pp. 106185
Author(s):  
Saiyu Luo ◽  
Zhiping Cai ◽  
Chuanxiang Sheng ◽  
Li Li ◽  
Qian Chen
2018 ◽  
Vol 47 (7) ◽  
pp. 708001
Author(s):  
刘永欣 LIU Yong-xin ◽  
张凯宁 ZHANG Kai-ning ◽  
蒲继雄 PU Ji-xiong

Author(s):  
Zhongsheng Zhai ◽  
Jiaojie Huang ◽  
Zhuang Cheng ◽  
Qinghua Lv ◽  
Xuanze Wang

2017 ◽  
Vol 25 (3) ◽  
pp. 2569 ◽  
Author(s):  
Antonino Cala’ Lesina ◽  
Pierre Berini ◽  
Lora Ramunno
Keyword(s):  

2018 ◽  
Vol 50 (4) ◽  
Author(s):  
Jing-tao Xin ◽  
Ming-li Dong ◽  
Xiao-ping Lou ◽  
Lian-qing Zhu

2019 ◽  
Vol 9 (15) ◽  
pp. 2949 ◽  
Author(s):  
Zhiping Yin ◽  
Qun Zheng ◽  
Kai Guo ◽  
Zhongyi Guo

In this paper, a tunable patch array based on high-order is proposed at the frequency of 300 GHz, achieving active controllable beam steering, focusing and generation of orbital angular momentum vortex beams. It has been demonstrated that the patch array can achieve wide beam scanning angle by controlling the phase of array elements with tunable phase shifters. Meanwhile, beam focusing on the specified position can also be realized by phase modulation of array elements based on the focusing theory. In addition, we also designed a patch array to generate vortex beams with multiple topological charges by high-order modes. The performances show that the patch antenna array we designed has a good application prospect.


Optik ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 4378-4381 ◽  
Author(s):  
Fangjie Lv ◽  
Xinzhong Li ◽  
Yuping Tai ◽  
Liping Zhang ◽  
Zhaogang Nie ◽  
...  

2016 ◽  
Vol 15 ◽  
pp. 889-892 ◽  
Author(s):  
Fabio Spinello ◽  
Giuseppe Parisi ◽  
Fabrizio Tamburini ◽  
Giovanni Massaro ◽  
Carlo G. Someda ◽  
...  

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