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

Two-faceted mirror for active integration of coherent high-power laser beams

Not Accessible

Your library or personal account may give you access

Abstract

A new integration method suited for spatially coherent high-power laser beams is demonstrated. The integrator system is based on a mirror with two facets, one of which can vibrate under the action of a piezoelectric translator. After reflection in the faceted mirror, the beam intensity distribution is modified to obtain greater uniformity. However, because of the coherence of the reflected beamlets, this distribution is affected by an interference pattern. The active integration consists of a periodic displacement of the moving facet that causes the interference pattern to vibrate, and its contribution to the intensity profile therefore averages out (fringe visibility within a 5% range). The combination of a faceted mirror and a simple imaging system results in an intensity profile with good uniformity over large spot sizes. Both simulated and experimental results are presented, the latter showing that a final uniformity within a 10% range can be achieved and it is limited mainly by diffraction at the edges of the facets.

© 1997 Optical Society of America

Full Article  |  PDF Article
More Like This
Laser heat treatments driven by integrated beams: role of irradiation nonuniformities

José-Luis Ocaña, Angel García-Beltrán, Ferran Laguarta, Jesús Armengol, Núria Lupón, and Fidel Vega
Appl. Opt. 38(21) 4570-4576 (1999)

Optical beam shaping of a high power laser for uniform target illumination

Dominique M. Dagenais, James A. Woodroffe, and Irving Itzkan
Appl. Opt. 24(5) 671-675 (1985)

Laser beam intensity profile transformation with a fabricated mirror

Koshichi Nemoto, Takashi Fujii, Naohiko Goto, Hideo Takino, Teruki Kobayashi, Norio Shibata, Kazuya Yamamura, and Yuzo Mori
Appl. Opt. 36(3) 551-557 (1997)

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 (5)

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

Metrics

Select as filters


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