Highly Tm(3+) doped germanate glass and its single mode fiber for 2.0 μm laser

Scientific Reports
Xin WenZhongmin Yang

Abstract

Highly Tm(3+) doped optical fibers are urgently desirable for 2.0 μm compact single-frequency fiber laser and high-repetition-rate mode-locked fiber laser. Here, we systematically investigated the optical parameters, energy transfer processes and thermal properties of Tm(3+) doped barium gallo-germanate (BGG) glasses. Highly Tm(3+) doped BGG glass single mode (SM) fibers were fabricated by the rod-in-tube technique. The Tm(3+) doping concentration reaches 7.6 × 10(20) ions/cm(3), being the reported highest level in Tm(3+) doped BGG SM fibers. Using ultra short (1.6 cm) as-drawn highly Tm(3+) doped BGG SM fiber, a single-frequency fiber laser at 1.95 μm has been demonstrated with a maximum output power of 35 mW when in-band pumped by a home-made 1568 nm fiber laser. Additionally, a multilongitudinal-mode fiber laser at 1.95 μm has also been achieved in a 10 cm long as-drawn active fiber, yielding a maximum laser output power of 165 mW and a slope efficiency of 17%. The results confirm that the as-drawn highly Tm(3+) doped BGG SM fibers are promising in applications that require high gain and high power from a short piece of active optical fiber.

References

Jul 21, 2004·Optics Letters·Søren AggerPoul Varming
Feb 19, 2008·Optics Letters·Billy RichardsAnimesh Jha
Nov 27, 2006·Optics Express·Shyam S BayyaIshwar D Aggarwal
Nov 21, 2009·Optics Letters·Jihong GengFarzin Amzajerdian
Nov 17, 2011·The Journal of Physical Chemistry. a·Rongrong XuJunjie Zhang
Jan 10, 2014·Scientific Reports·Feifei HuangDanping Chen

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Citations

Oct 14, 2016·ACS Applied Materials & Interfaces·Meng JuYongsheng Zhu
Oct 28, 2017·Scientific Reports·A R ZanattaF Alvarez

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