Open AccessTm^3+ and Tm^3+-Ho^3+co-doped tungsten tellurite glass single mode fiber laser
Author(s) -
Kefeng Li,
Guang Zhang,
Xin Wang,
Lili Hu,
Pei-Wen Kuan,
Danping Chen,
Meng Wang
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.010115
Subject(s) - materials science , fiber laser , optics , laser , slope efficiency , cladding (metalworking) , tungsten , doping , lasing threshold , laser diode , optical fiber , optoelectronics , fiber , diode , wavelength , composite material , physics , metallurgy
We investigated the ~2 μm spectroscopic and lasing performance of Tm(3+) and Tm(3+)-Ho(3+) co-doped tungsten tellurite glass single mode fibers with a commercial 800 nm laser diode. The double cladding single mode (SM) fibers were fabricated by using rod-in-tube method. The propagation loss of the fiber was ~2.5 dB/m at 1310 nm. The spectroscopic properties of the fibers were analyzed. A 494 mW laser operating at ~1.9 μm was achieved in a Tm(3+) doped 20 cm long fiber, the slope efficiency was 26%, and the laser beam quality factor M(2) was 1.09. A 35 mW ~2.1 μm laser output was also demonstrated in a 7 cm long of Tm(3+)-Ho(3+) co-doped tungsten tellurite SM fiber.