Progress on the suppression of FM-to-AM modulations in SG-III laser facility

D. P. Xu; R. Zhang; X. C. Tian; D. D. Zhou; N. Zhu; J. J. Wang; M. Z. Li; D. X. Hu; X. M. Zhang

doi:10.1117/12.2065284

3 February 2015 Progress on the suppression of FM-to-AM modulations in SG-III laser facility

D. P. Xu, R. Zhang, X. C. Tian, D. D. Zhou, N. Zhu, J. J. Wang, M. Z. Li, D. X. Hu, X. M. Zhang

Proceedings Volume 9255, XX International Symposium on High-Power Laser Systems and Applications 2014; 925505 (2015) https://doi.org/10.1117/12.2065284
Event: XX International Symposium on High Power Laser Systems and Applications, 2014, Chengdu, China

Abstract

FM-to-AM modulations are harmful to output characteristics of large-scale laser facility. In SG-III laser facility, some key techniques have been employed to suppress FM-to-AM modulations. Firstly, phase modulator was arranged at the end of fiber laser injection system to avoid GVD and PMD in the SM fiber system. Secondly, a fiber-based polarization rotated filter was proposed to suppress FM-to-AM modulations independently on each beam. Finally, less wave plates were employed and liquid crystal modulators were coated for decreasing weak etalon effect in preamplifier system. The results indicated that it can reduce the modulation depth less than 10% at a modulation frequency of 2.488GHz in SG-III laser facility.

Citation Download Citation

D. P. Xu, R. Zhang, X. C. Tian, D. D. Zhou, N. Zhu, J. J. Wang, M. Z. Li, D. X. Hu, and X. M. Zhang "Progress on the suppression of FM-to-AM modulations in SG-III laser facility", Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 925505 (3 February 2015); https://doi.org/10.1117/12.2065284

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