US 12,015,235 B2
All-fiber optical vortex laser based on resonance of orbital angular momentum modes
Jiulin Gan, Guangdong (CN); Zhongmin Yang, Guangdong (CN); Xiaobo Heng, Guangdong (CN); and Zhishen Zhang, Guangdong (CN)
Assigned to SOUTH CHINA UNIVERSITY OF TECHNOLOGY, Guangzhou (CN)
Appl. No. 17/266,114
Filed by SOUTH CHINA UNIVERSITY OF TECHNOLOGY, Guangdong (CN)
PCT Filed Oct. 31, 2018, PCT No. PCT/CN2018/113244
§ 371(c)(1), (2) Date Feb. 5, 2021,
PCT Pub. No. WO2020/047977, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. 201811043844.9 (CN), filed on Sep. 7, 2018.
Prior Publication US 2021/0257804 A1, Aug. 19, 2021
Int. Cl. H01S 3/00 (2006.01); H01S 3/067 (2006.01)
CPC H01S 3/06783 (2013.01) [H01S 3/06712 (2013.01); H01S 3/06716 (2013.01); H01S 3/06791 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An all-fiber optical vortex laser based on resonance of orbital angular momentum modes, wherein the laser comprises a narrow-linewidth pump laser, an optical amplifier, an orbital angular momentum mode generator, a first polarization controller, an optical fiber circulator, an optical fiber coupler, a second polarization controller and a vortex optical fiber;
the orbital angular momentum mode generator comprises a first port, a second port, a third port and a fourth port;
the optical fiber circulator comprises a first port, a second port and a third port;
the optical fiber coupler comprises a first port, a second port, a third port and a fourth port; and
the narrow-linewidth pump laser is connected to the optical amplifier; the optical amplifier is connected to the first port of the orbital angular momentum mode generator, and the second port of the orbital angular momentum mode generator is connected to the first port of the optical fiber circulator via the first polarization controller; the second port of the optical fiber circulator is connected to the first port of the optical fiber coupler; the second port of the optical fiber coupler is connected to the third port of the optical fiber circulator via the second polarization controller and the vortex optical fiber to form an annular cavity; and the third port of the optical fiber coupler outputs laser light.