A monolithic microlens for an ytterbium-doped microstructured optical fiber amplifier
Abstract
Ytterbium-doped microstructured optical fibers have many advantages for fiber amplifiers. Due to air-hole structures in the cladding of ytterbium-doped microstructured optical fibers, high-power microstructured optical fiber laser systems require stricter treatment of the fiber end than conventional ytterbium-doped double-cladding fiber laser systems. Here, we fabricated a fiber microlens in an ytterbium-doped double-cladding microstructured optical fiber for a fiber amplifier by CO2-laser fusion. The microlens can combine the end-cap scheme, pump coupling and beam shaping. This end face processing technology is useful for high mechanical stability, good reproducibility and miniaturization of laser systems.
- Publication:
-
Laser Physics
- Pub Date:
- March 2019
- DOI:
- 10.1088/1555-6611/aaffc6
- Bibcode:
- 2019LaPhy..29c5104X
- Keywords:
-
- microstructured optical fiber;
- microlens;
- amplifier;
- end cap;
- optical coupling;
- beam shaping