Abstract

A high-power fiber laser collimator and array of collimators are described with optical architecture, allowing one to transmit almost 100% of the full power output from fiber facets. In the case of coherent beam combining, more than 70% of the full power can be focused into a diffraction limited spot determined by the diameter of the conformal aperture. The truncated-Gaussian beam tails are not trapped inside the array but are redirected through the output lenses and dispersed outside of the array along with the main collimated beam, thus eliminating the requirement for cooling the array. Detailed analysis is presented for the beam tail propagation geometry’s dependence on array optical parameters, including the interior redirecting lenses. The parasitic scattering from imperfections of the interior lenses is estimated to be as small as a few watts when 1.5–2 kW is emitted by each fiber facet.

© 2016 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Obscuration-free pupil-plane phase locking of a coherent array of fiber collimators

Mikhail A. Vorontsov, Svetlana L. Lachinova, Leonid A. Beresnev, and Thomas Weyrauch
J. Opt. Soc. Am. A 27(11) A106-A121 (2010)

Laser beam projection with adaptive array of fiber collimators. I. Basic considerations for analysis

Mikhail A. Vorontsov and Svetlana L. Lachinova
J. Opt. Soc. Am. A 25(8) 1949-1959 (2008)

Laser beam projection with adaptive array of fiber collimators. II. Analysis of atmospheric compensation efficiency

Svetlana L. Lachinova and Mikhail A. Vorontsov
J. Opt. Soc. Am. A 25(8) 1960-1973 (2008)

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

Contact your librarian or system administrator
or
Login to access OSA 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 OSA member, or as an authorized user of your institution.

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

Figures (17)

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
Login to access OSA Member Subscription

Tables (4)

You do not have subscription access to this journal. Article tables 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
Login to access OSA Member Subscription

Metrics

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
Login to access OSA Member Subscription