Static modeling for membrane deformable mirror used in high-power laser

Peng Wu; Haiqing Chen; Jie Li; Hongbin Yu

doi:10.1117/12.725743

29 January 2007 Static modeling for membrane deformable mirror used in high-power laser

Peng Wu, Haiqing Chen, Jie Li, Hongbin Yu

Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 62796K (2007) https://doi.org/10.1117/12.725743
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China

Abstract

The technology of membrane deformable mirror (DMs) that has the potential to achieve comprehensive wavefront compensation and control in high power laser has been developed rapidly in recent years. Experimental results reveal that strong nonlinearity is induced to the deformation of DMs with respect to the square of input voltage when operating voltage is more than 120V. The nonlinear response and strong coupling effect of control channel in DMs make it difficult to obtain the desired mirror surface shapes. A test bed is built up to measure the deformation of DMs driven by specified voltages. An efficient nonlinear model of deformation with respect to input voltages is presented using a back propagation neural network (BPNN). Deformation due to arbitrary actuator voltages applied to actuators to correct wavefront aberration can be calculated directly with a higher precision using the BPNN model proposed. The residual relative error of the proposed model shows the improvement of accuracy of an order about 5 as compared to that of linear model, and with no significant increase of time consumption. A preliminary open-loop control experiment of laser wavefront compensation is performed to exam the validity of applying the proposed BPNN model in laser wavefront compensation application.

Citation Download Citation

Peng Wu, Haiqing Chen, Jie Li, and Hongbin Yu "Static modeling for membrane deformable mirror used in high-power laser", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62796K (29 January 2007); https://doi.org/10.1117/12.725743

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Actuators

Mirrors

Wavefront compensation

High power lasers

Electrodes

Deformable mirrors

Laser systems engineering

Show All Keywords

Keywords/Phrases

Search In:

Publication Years