Wavefront pre-compensation for thermal deformations in a beam control system

Qiong Zhou; Zongfu Jiang; Fengjie Xi; Liang Liu

doi:10.1117/12.899106

19 August 2011 Wavefront pre-compensation for thermal deformations in a beam control system

Qiong Zhou, Zongfu Jiang, Fengjie Xi, Liang Liu

Proceedings Volume 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging; 81920Q (2011) https://doi.org/10.1117/12.899106
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

A simple way to approach the problem of counteracting the phase aberrations induced by thermal deformations in a beam control system is advanced and the influence of wavefront pre-compensation on correcting the phase shifts is proved by experiments. The thermal deformations of a Si reflector irradiated by a circle-sharp laser beam are simulated, and the phase aberrations of emitted laser are calculated. In order to overcome the effects of phase aberrations, the conjugation wavefront pre-compensation of incident laser is studied theoretically and experimentally. There are three works in this paper. Firstly, the thermal deformation of a mirror was simulated by using ANSYS Mechanical APDL application. Secondly, on the base that the phase shifts has been calculated, the complex amplitude distribution of the outgoing laser was calculated by using a space ray method of geometrical optics and light diffraction theory. Finally, the influence of wavefront pre-compensation on emitted laser had studied experimentally with a scaled model in laboratory. The results show that the uneven distribution of phase shifts which is induced by inhomogenous thermal deformations greatly distorts the wavefront of the emitted laser. The beam quality of emitted laser has been ameliorated when a conjugation phase is been placed on the incident beam.

Citation Download Citation

Qiong Zhou, Zongfu Jiang, Fengjie Xi, and Liang Liu "Wavefront pre-compensation for thermal deformations in a beam control system", Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 81920Q (19 August 2011); https://doi.org/10.1117/12.899106

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
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Wavefronts

Mirrors

Phase shifts

Control systems

Silicon

Laser beam propagation

Reflectors

Show All Keywords

Keywords/Phrases

Search In:

Publication Years