Controllable focal spot for direct-drive laser fusion based on electro-optic effect

Zheqiang Zhong; Xiaochun Hu; Zelong Li; Rong Ye; Bin Zhang

doi:10.1117/12.2063427

25 September 2014 Controllable focal spot for direct-drive laser fusion based on electro-optic effect

Zheqiang Zhong, Xiaochun Hu, Zelong Li, Rong Ye, Bin Zhang

Proceedings Volume 9192, Current Developments in Lens Design and Optical Engineering XV; 91921H (2014) https://doi.org/10.1117/12.2063427
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

In direct-drive laser fusion, the sufficient uniformity of focal spot for realizing high efficient compression and central ignition is required. However, the laser beams are difficult to achieve sufficient uniform for compressing the shell symmetrically inward. We proposed a novel scheme to achieve controllable focal length based on electro-optic effect. The electro-optic crystal was placed in the front of the laser fusion system and applied the electro field with approximate spherical distribution. Since the wavefront of laser beam is transformed through the electro-optic crystal, the focal spot of the transformed laser beam would be changed on the target. Theoretical analysis and numerical simulation have been made, and the results show that the proposed scheme could achieve enough controllable focal spot on the target.

Citation Download Citation

Zheqiang Zhong, Xiaochun Hu, Zelong Li, Rong Ye, and Bin Zhang "Controllable focal spot for direct-drive laser fusion based on electro-optic effect", Proc. SPIE 9192, Current Developments in Lens Design and Optical Engineering XV, 91921H (25 September 2014); https://doi.org/10.1117/12.2063427

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