Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Imprinting high-gradient topographical structures onto optical surfaces using magnetorheological finishing: manufacturing corrective optical elements for high-power laser applications

Abstract

Corrective optical elements form an important part of high-precision optical systems. We have developed a method to manufacture high-gradient corrective optical elements for high-power laser systems using deterministic magnetorheological finishing (MRF) imprinting technology. Several process factors need to be considered for polishing ultraprecise topographical structures onto optical surfaces using MRF. They include proper selection of MRF removal function and wheel sizes, detailed MRF tool and interferometry alignment, and optimized MRF polishing schedules. Dependable interferometry also is a key factor in high-gradient component manufacture. A wavefront attenuating cell, which enables reliable measurement of gradients beyond what is attainable using conventional interferometry, is discussed. The results of MRF imprinting a 23 μm deep structure containing gradients over 1.6 μm / mm onto a fused-silica window are presented as an example of the technique’s capabilities. This high-gradient element serves as a thermal correction plate in the high-repetition-rate advanced petawatt laser system currently being built at Lawrence Livermore National Laboratory.

© 2016 Optical Society of America

Full Article  |  PDF Article
More Like This
High-energy, high-average-power laser with Nd:YLF rods corrected by magnetorheological finishing

Vincent Bagnoud, Mark J. Guardalben, Jason Puth, Jonathan D. Zuegel, Ted Mooney, and Paul Dumas
Appl. Opt. 44(2) 282-288 (2005)

Influence law of structural characteristics on the surface roughness of a magnetorheological-finished KDP crystal

Shaoshan Chen, Shengyi Li, Hao Hu, Qi Li, and Guipeng Tie
Appl. Opt. 53(31) 7215-7223 (2014)

Evolution law of comet-shaped defects in magnetorheological finishing

Quanlin Shu, Kuo Hai, Wen Huang, Lili Jiang, Shenghao Yuan, Kailong Li, Pengfei Sun, Dong Tian, and Yunfei Zhang
Appl. Opt. 61(3) 691-698 (2022)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved