title: Tm3+ and Tm(3+)-Ho3+ co-doped tungsten tellurite glass single mode fiber laser.
abstract: 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.
authors.affiliation: Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. kfli@siom.ac.cn
authors.forename: Kefeng
authors.initials: K
authors.lastname: Li
authors.forename: Guang
authors.initials: G
authors.lastname: Zhang
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.forename: Lili
authors.initials: L
authors.lastname: Hu
authors.forename: Peiwen
authors.initials: P
authors.lastname: Kuan
authors.forename: Danping
authors.initials: D
authors.lastname: Chen
authors.forename: Meng
authors.initials: M
authors.lastname: Wang
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D005898:Glass / Q000737:chemistry*; D054023:Lasers, Semiconductor; D013691:Tellurium / Q000737:chemistry*; D014414:Tungsten / Q000737:chemistry*
chemical_list: C026660:tellurous acid; D013691:Tellurium; D014414:Tungsten