Beam quality and power scalability of fiber laser array in a S-F cavity

Pu Zhou; Xiaolin Wang; Yanxing Ma; Haotong Ma; Xiaojun Xu; Zejin Liu

doi:10.1117/12.837775

24 November 2009 Beam quality and power scalability of fiber laser array in a S-F cavity

Pu Zhou, Xiaolin Wang, Yanxing Ma, Haotong Ma, Xiaojun Xu, Zejin Liu

Proceedings Volume 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration; 75090U (2009) https://doi.org/10.1117/12.837775
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

Coherent beam combination (CBC) of laser array has the potential to solve the power limitation in single fiber laser as well as maintaining good beam quality. Fiber laser array in self-Fourier (S-F) cavity presents a promising approach for CBC due to its compactness, simplicity, ease of alignment, and stability in phase locking, which have been under intense research recently. In this paper, we perform a system level analysis on the fiber laser array in S-F cavity. Analytical analysis on the beam quality and power scalability will be presented. By numerical calculation it is found that the total power contained in the laser array has linear relationship with the laser numbers. The total output power P of N laser in a S-F cavity can be expressed as P ∝ 0.4× N. It is also revealed that power encircled in the diffraction-limited bucket will not increase with N, adding more laser elements in the laser cavity will result in more laser power contained in the sidelobes in the far-field pattern.

Citation Download Citation

Pu Zhou, Xiaolin Wang, Yanxing Ma, Haotong Ma, Xiaojun Xu, and Zejin Liu "Beam quality and power scalability of fiber laser array in a S-F cavity", Proc. SPIE 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration, 75090U (24 November 2009); https://doi.org/10.1117/12.837775

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