scholarly journals Nonlinear absorption of SWNT film and its effects to the operation state of pulsed fiber laser

2014 ◽  
Vol 22 (14) ◽  
pp. 17227 ◽  
Author(s):  
Xiaohui Li ◽  
Yonggang Wang ◽  
Yishan Wang ◽  
Wei Zhao ◽  
Xuechao Yu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Nonlinear Absorption ◽  
Pulsed Fiber Laser ◽  
Swnt Film

Micro-Welding of Stainless Steel and Copper Foils Using a Nano -Second Pulsed Fiber Laser

2019 ◽  
Vol 6 (2) ◽  
pp. 158-172
Author(s):  
Aniruddha Kumar ◽  
Manisha P Gupta ◽  
J. Banerjee ◽  
S. Neogy ◽  
N. Keskar ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Fiber Laser ◽  
Copper Foils ◽  
Pulsed Fiber Laser

Research on L-PPM Modulation Rate of Pulse Fiber Lasers

2014 ◽  
Vol 926-930 ◽  
pp. 1787-1790
Author(s):  
Zi Qiang Hao ◽  
Hong Zuo Li ◽  
Xin Ren
Keyword(s):  
Fiber Laser ◽  
Peak Power ◽  
Transmission Rate ◽  
Repetition Frequency ◽  
High Rate ◽  
High Peak Power ◽  
Device Processing ◽  
Rate Transmission ◽  
Modulation Rate ◽  
Pulsed Fiber Laser

Compared with continuous laser, pulsed fiber laser has the advantages of high peak power, which is widely used in device processing, military defense and other areas. As the repetition frequency of pulsed fiber laser is low and therefore it cannot realize high rate transmission, this paper does the research on L-PPM modulation of pulsed fiber laser to find a method of effectively improving the modulation rate of pulsed fiber laser. Experimental results show that the L-PPM modulation can improve the transmission rate of the pulsed fiber laser whose repetition frequency is 200K to 1.387Mbps. The research results are useful for the application of pulsed fiber laser in communication.

Investigation of the influence of optical nonlinearity on combining efficiency in ultrashort pulsed fiber laser coherent combining system

2021 ◽  
Author(s):  
Yun-Chen Zhu ◽  
Ping-Xue Li ◽  
Chuan-Fei Yao ◽  
Chun-Yong Li ◽  
Wen-Hao Xiong ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Physical Mechanism ◽  
Theoretical Work ◽  
Optical Nonlinearity ◽  
Laser Beams ◽  
Spectral Information ◽  
Spectral Coherence ◽  
Combining Efficiency ◽  
Pulsed Fiber Laser ◽  
Coherent Combining

Abstract In this paper, the influence of optical nonlinearity on combining efficiency in ultrashort pulsed fiber laser coherent combining system is investigated theoretically and experimentally. In the theoretical work, a new theoretical algorithm for the coherent combining efficiency, which can be used to quantify the spectral coherence decay induced by optical nonlineary imbalance between the sub-beams, is presented. The spectral information of the sub-beam is obtained by numerically solving the nonlinear Schrödinger equation (NLSE) in this algorithm to ensure an accurate prediction. In the experimental work, the coherent combining of two all-fiber picosecond lasers is achieved, and the influence of imbalanced optical nonlinearity on the combining efficiency is studied, which agrees with the theoretical prediction. This paper reveals the physical mechanism for the influence of optical nonlinearity on the combining efficiency, which is valuable for the coherent combining of ultrashort pulsed fiber laser beams.

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