High-Power Spectral Beam Combining Of Linearly Polarized Tm:Fiber Lasers

Abstract

To date, high-power scaling of Tm:fiber lasers has been accomplished by maximizing the power from a single fiber aperture. In this work, we investigate power scaling by spectral beam combination of three linearly polarized Tm:fiber MOPA lasers using dielectric mirrors with a steep transition from highly reflective to highly transmissive that enable a minimum wavelength separation of 6 nm between individual laser channels within the wavelength range from 2030 to 2050 nm. Maximum output power is 253W with M2 < 2, ultimately limited by thermal lensing in the beam combining elements.

Publication Date

1-1-2015

Publication Title

Applied Optics

Volume

54

Issue

4

Number of Pages

757-762

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/AO.54.000757

Socpus ID

84942373950 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84942373950

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