OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 22 — Aug. 1, 2007
  • pp: 5147–5157

Achieving Gaussian outputs from large-mode-area higher-order-mode fibers

Norbert Lindlein, Gerd Leuchs, and Siddharth Ramachandran  »View Author Affiliations


Applied Optics, Vol. 46, Issue 22, pp. 5147-5157 (2007)
http://dx.doi.org/10.1364/AO.46.005147


View Full Text Article

Enhanced HTML    Acrobat PDF (1049 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We describe an alternative to fiber-gratings for converting higher-order L P 0 m ( m > 1 ) fiber modes into a nearly fundamental Gaussian shape at the output of a fiber. This schematic enables the use of light propagation in higher-order modes of a fiber, a fiber-platform that has recently shown great promise for achieving very large mode areas needed for future high-power lasers and amplifiers. The conversion will be done by using a binary phase plate in the near field of the fiber, which emits the L P 0 m mode. Since the binary phase plate alone cannot increase the quality factor M 2 of the laser beam because of some broad sidebands, a filtering of the sidebands is done in the Fourier plane of a telescope. Of course, this will cost some of the total light power, but on the other side the M 2 factor can be reduced to nearly the ideal value near 1.0, and it is shown that 76 % of the total light power can be conserved for all investigated modes ( 2 m 8 ) . A tolerance analysis for the phase plate and its adjustment is made, and different optical imaging systems to form a magnified image of the fiber mode on the phase plate are discussed in order to have more tolerance for the adjustment of the phase plate.

© 2007 Optical Society of America

OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(060.2310) Fiber optics and optical communications : Fiber optics
(260.1960) Physical optics : Diffraction theory

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: October 9, 2006
Manuscript Accepted: April 23, 2007
Published: July 9, 2007

Citation
Norbert Lindlein, Gerd Leuchs, and Siddharth Ramachandran, "Achieving Gaussian outputs from large-mode-area higher-order-mode fibers," Appl. Opt. 46, 5147-5157 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-22-5147

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 OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited