Fabrication of large-aperture random phase plate for uniform illumination on laser fusion target

Huijie Huang; Dunwu Lu; Runwen Wang; Yongkai Zhao; Zengshui Liu

doi:10.1117/12.380867

3 April 2000 Fabrication of large-aperture random phase plate for uniform illumination on laser fusion target

Huijie Huang, Dunwu Lu, Runwen Wang, Yongkai Zhao, Zengshui Liu

Proceedings Volume 3889, Advanced High-Power Lasers; (2000) https://doi.org/10.1117/12.380867
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

We have fabricated a large aperture random phase plate (RPP) in Chinese K9 glass substrate for target-plane laser beam smoothing at 1.06 micrometer wavelength, by using large aperture photolithography and dilute HF etching processes. The RPP's clear aperture is (phi) 250 mm. The measured average step height is 1.060 micrometer, which has a relative standard deviation of 1.24% at 5 locations on the RPP to the theoretical value. A focal spot with very sharp edges and nearly flat-top overall envelope intensity distribution is obtained at the focal-plane of a focusing lens. These results show that our fabrication techniques for RPP is effective, and is easily scaleable to even larger apertures.

Citation Download Citation

Huijie Huang, Dunwu Lu, Runwen Wang, Yongkai Zhao, and Zengshui Liu "Fabrication of large-aperture random phase plate for uniform illumination on laser fusion target", Proc. SPIE 3889, Advanced High-Power Lasers, (3 April 2000); https://doi.org/10.1117/12.380867

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