Mode-Selective Amplification In A Large Mode Area Yb-Doped Fiber Using A Photonic Lantern

Abstract

We demonstrate selective spatial mode amplification in a few mode, double-clad Yb-doped large mode area (LMA) fiber, utilizing an all-fiber photonic lantern. Amplification to multi-watt output power is achieved while preserving high spatial mode selectivity. We observe gain values of over 12 dB for all modes: LP01 , LP11a , and LP11b , when amplified individually. Additionally, we investigate the simultaneous amplification of LP01 ô LP11a and LP11a ô LP11b , and the resultant mode competition. The proposed architecture allows for the reconfigurable excitation of spatial modes in the LMA fiber amplifiers, and represents a promising method that could enable dynamic spatial mode control in high power fiber lasers.

Publication Date

5-15-2016

Publication Title

Optics Letters

Volume

41

Issue

10

Number of Pages

2157-2160

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.41.002157

Socpus ID

84971280788 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84971280788

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