Modeling analysis of a passive coherent beam combining using fused-taper fiber laser arrays

Jie Li; Wei Li; Jianqiu Cao; Zilun Chen; Hang Zhou

doi:10.1117/12.900594

19 August 2011 Modeling analysis of a passive coherent beam combining using fused-taper fiber laser arrays

Jie Li, Wei Li, Jianqiu Cao, Zilun Chen, Hang Zhou

Proceedings Volume 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging; 81922F (2011) https://doi.org/10.1117/12.900594
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

Passive coherent beam combining, which uses optical feedback from the fibers to force all to lock in phase, seems to be a promising way for high power output. Fused-taper fiber laser array is one of the passive methods, in which phase locking is realized by mutual energy coupling, without any active phase control. In this paper, we use a dynamical model to express phase-locking evolution of the fused-taper fiber laser array theoretically. In the numerical analysis of 3- and 7- fused-taper fiber arrays, we start the simulations beginning with each laser in an off-state, that is, the initial electric fields are chosen at random of order 0.1 and the phases are uniformly distributed. The results show that the array can achieve a relative in-phase state. The coupling degree varies with the distance between the two neighbor fibers. The simulations also show that the fiber grating reflectivity, the pumping parameters and the coupling length have significant effect on the stability of the coherent combing.

Citation Download Citation

Jie Li, Wei Li, Jianqiu Cao, Zilun Chen, and Hang Zhou "Modeling analysis of a passive coherent beam combining using fused-taper fiber laser arrays", Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 81922F (19 August 2011); https://doi.org/10.1117/12.900594

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available