skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Zonal deformable mirror for laser wavefront control

Abstract

We have developed a zonal deformable mirror that controls the wavefront of a high average power visible laser beam used for isotope separation. The mirror corrects greater than five waves of astigmatism, power, or random second order aberrations to 1/20 wave RMS. Sufficient resolution is achieved to correct third order aberrations as well. A monolithic glass substrate with dimensions 77 mm {times} 121 mm {times} 10mm is uses in this design. Twenty-five actuator attachment members are incorporated into the shape of the back side of the substrate. Piezoelectric translators (PZTs) attached in a rectangular array deform the continuous substrate to the proper conjugate shape. The PZTs are attached through flexures designed to be compressionally stiff and laterally soft. In this way the intended PZT displacement is transmitted efficiently to the substrate while isolating both the mirror and the PZTs from undesirable lateral loads. Mirror parameters were determined from elastic mechanical beam approximations. Finite element analysis was used to verify performance prior to prototyping. A Hartmann sensor controls the mirror in a closed loop adaptive system. The system description is covered in a companion paper. This paper describes the mirror design and presents performance data. 4 refs., 7 figs.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5428198
Report Number(s):
UCRL-JC-105846; CONF-9107115-30
ON: DE91017085
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Society of Photo-Optical Instrumentation Engineers (SPIE) meeting, San Diego, CA (United States), 21-26 Jul 1991
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPES AND RADIATION SOURCES; 42 ENGINEERING; LASER ISOTOPE SEPARATION; LASER MIRRORS; DESIGN; LASER RADIATION; OPTICAL SYSTEMS; DEFORMATION; FINITE ELEMENT METHOD; PERFORMANCE TESTING; ELECTROMAGNETIC RADIATION; ISOTOPE SEPARATION; MIRRORS; NUMERICAL SOLUTION; RADIATIONS; SEPARATION PROCESSES; TESTING; 070100* - Physical Isotope Separation; 420200 - Engineering- Facilities, Equipment, & Techniques

Citation Formats

Swift, C D, Bergum, J W, Bliss, E S, House, F A, Libkind, M A, Salmon, J T, and Weinzapfel, C L. Zonal deformable mirror for laser wavefront control. United States: N. p., 1991. Web.
Swift, C D, Bergum, J W, Bliss, E S, House, F A, Libkind, M A, Salmon, J T, & Weinzapfel, C L. Zonal deformable mirror for laser wavefront control. United States.
Swift, C D, Bergum, J W, Bliss, E S, House, F A, Libkind, M A, Salmon, J T, and Weinzapfel, C L. Mon . "Zonal deformable mirror for laser wavefront control". United States.
@article{osti_5428198,
title = {Zonal deformable mirror for laser wavefront control},
author = {Swift, C D and Bergum, J W and Bliss, E S and House, F A and Libkind, M A and Salmon, J T and Weinzapfel, C L},
abstractNote = {We have developed a zonal deformable mirror that controls the wavefront of a high average power visible laser beam used for isotope separation. The mirror corrects greater than five waves of astigmatism, power, or random second order aberrations to 1/20 wave RMS. Sufficient resolution is achieved to correct third order aberrations as well. A monolithic glass substrate with dimensions 77 mm {times} 121 mm {times} 10mm is uses in this design. Twenty-five actuator attachment members are incorporated into the shape of the back side of the substrate. Piezoelectric translators (PZTs) attached in a rectangular array deform the continuous substrate to the proper conjugate shape. The PZTs are attached through flexures designed to be compressionally stiff and laterally soft. In this way the intended PZT displacement is transmitted efficiently to the substrate while isolating both the mirror and the PZTs from undesirable lateral loads. Mirror parameters were determined from elastic mechanical beam approximations. Finite element analysis was used to verify performance prior to prototyping. A Hartmann sensor controls the mirror in a closed loop adaptive system. The system description is covered in a companion paper. This paper describes the mirror design and presents performance data. 4 refs., 7 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {6}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: