Abstract
We report an all-fiber laser oscillator producing as much as 1.9 W of single-frequency direct output at 1.5 μm. Spatial gain hole burning in the active fiber has been eliminated by use of a twisted-mode cavity approach. The two short pieces of a polarization-maintaining fiber that were spliced to the ends of the active fiber served as ultracompact quarter-wave plates. To our knowledge, the use of such a wave plate to manipulate the polarization state of light inside a fiber laser cavity is reported here for the first time. The laser output is linearly polarized and delivered through a polarization-maintaining fiber pigtail. We believe that the output power of our laser is the highest among all single-frequency fiber laser oscillators reported to date.
Original language | English (US) |
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Pages (from-to) | 2745-2747 |
Number of pages | 3 |
Journal | Optics letters |
Volume | 30 |
Issue number | 20 |
DOIs | |
State | Published - Oct 15 2005 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics