Dr. Hui Yu Profile

Dr. Hui Yu

at Chinese Academy of Sciences

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 11 August 2022 Paper

Improvement of MRAF algorithm based on high energy efficiency for beam shaping

Hui Yu, Jiamei Li, Dawei Li, Qiong Zhou, Fengnian Lv, Xingqiang Lu

Proceedings Volume 12307, 1230705 (2022) https://doi.org/10.1117/12.2643562

KEYWORDS: Energy efficiency, Beam shaping, Laser applications, Fourier transforms

Read Abstract +

To meet the specific needs or improve the system’s energy efficiency, it is necessary to integrate the beam into a specific intensity distribution beam. This paper establishes a set of rules based on the mixed-region amplitude freedom (MRAF) algorithm, and a beam shaping algorithm is proposed to calculate the intensity distribution by setting the energy efficiency. Simulation results show that compared with the traditional Gerchberg–Saxton (GS) algorithm, the convergence effect improved by one to two orders of magnitude after abandoning controlling a small part of the energy; compared with the MRAF algorithm, the energy efficiency converged to the preset target value, in addition, the energy efficiency is higher under the same convergence intensity. This algorithm provides a new path for shaping in femtosecond laser processing technology.

Proceedings Article | 6 June 2021 Paper

Optimization of disposable debris shield in high-energy PW laser focusing system

Jiamei Li, Hui Yu, Dawei Li, Qiong Zhou, Xingqiang Lu

Proceedings Volume 11849, 1184903 (2021) https://doi.org/10.1117/12.2599130

Read Abstract +

In inertial confinement fusion laser device, the disposable debris shield is necessary to protect expensive optical elements from the contaminations of target debris when high-energy PW laser was focused in the terminal focusing system. While the shield plate will have a very important impact on the focusing quality. In this paper, the design of debris shield, in high-energy PW focusing system, is studied by optical transmission theory, and the design parameters, such as PV value of wavefront, thickness and installation position of shield plate, are optimized. If 95% of the focal spot energy is concentrated within 10DL, the B-integral introduced by the debris shield should not exceed 8.5 rad when the plate is placed at 0.1f from the parabolic mirror. When the laser power is 1PW, the installation position of 3mm shield cannot exceed 0.29f. The influence of wavefront PV value on energy concentration of focal spot is little. A 3mm shield plate has good damage resistance on light field modulation when its size over 350μm. And the thinner the thickness is, the better the resistance is. This work is important for the arrangement and optimization of disposable debris shield in high-power PW laser focusing system.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years