Results 231 to 240 of about 1,022,007 (266)
Some of the next articles are maybe not open access.
High Power Thulium Doped Fiber Lasers
Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, 2009Thulium-doped silica fiber lasers and amplifiers offer a route to very high average power in the two-micron wavelength regime. This presentation reviews recent progress and considers the prospects for further improvement in performance.
W. A. Clarkson +7 more
openaire +1 more source
Tunable thulium-doped all-fiber laser
IEEE Photonics Technology Letters, 1998We demonstrate a tunable thulium-doped fiber ring laser wherein a single fused coupler acts simultaneously as the wavelength-division multiplexing for pump radiation, a lasing wavelength selective element, and output mirror. Temperature tuning of up to 2 nm//spl deg/C over a range of 40 nm and polarization tuning of over 100 nm within the spectral ...
R.L. Shubochkin +3 more
openaire +1 more source
Recent progress in thulium-doped fiber amplifiers
SPIE Proceedings, 2003I review the fast growing progress in thulium doped fiber amplifiers (TDFA) for S-band optical communication systems. The main results reported on pump schemes and amplifiers efficiencies are given. In particular, the characterization of TDFAs regarding distributed gain optimization using the coherent optical frequency domain reflectometry is described,
openaire +1 more source
Q-switched thulium-doped fiber laser
Optical Engineering, 1993A tunable Q-switched thulium-doped single-mode silica fiber laser is presented for the first time. Its performance is analyzed as a function of pulse repetition rate and pumping power. The optimization of laser parameters resulted in 4 W/1 30 ns, 1 .92-jrm wavelength pulses generated at a 4-kHz repetition rate. From the measured values of small- signal
openaire +1 more source
High-power all-fiberized thulium-doped fiber MOPA
Laser Physics Letters, 2013We demonstrate a high-power all-fiberized thulium-doped fiber laser in a master oscillator power amplifier (MOPA) architecture giving output powers up to 100.4 W. A large-mode-area double-clad active fiber is employed as the gain medium. The laser is pumped by pigtailed laser diodes (LD) with a central wavelength of 792 nm.
H B Lü +4 more
openaire +1 more source
Spectral hole burning measurement thulium-doped fiber amplifiers
Optics Letters, 2002An accurate technique was implemented to measure spectral hole burning in rare-earth amplifiers at room temperature, showing that thulium-doped fiber amplifiers exhibit hole depths four times lower than those of C -band erbium-doped fiber amplifiers.
Fabien, Roy +4 more
openaire +2 more sources
Q-switched thulium-doped photonic crystal fiber laser
Optics Letters, 2012We report a novel, Tm-doped photonic crystal fiber (PCF) actively Q-switched oscillator that provides ~8.9 kW peak power with 435 µJ, 49 ns pulses at 10 kHz repetition rate at 2 μm wavelength. This fiber has a mode-field area >1000 μm2, the largest of any flexible PCF providing diffraction-limited beam quality to the best of our knowledge.
Pankaj, Kadwani +6 more
openaire +3 more sources
Recent advances in thulium-doped fiber amplifiers
Optical Fiber Communication Conference and Exhibit, 2002Summary form only given. Presents a comparison between different pumping schemes implemented within fluoride doped fibers. The first part deals with the performances of different up-conversion pumps. In the second part, the advantages and drawbacks of several ground state pump wavelengths are discussed.
openaire +1 more source
All-fiber thulium-doped fiber ring laser with in-band pumping
Workshop on Recent Advances in Photonics (WRAP), 2013A continuous-wave thulium-doped fiber laser at around 1.9 μm has been demonstrated in all-fiber ring configuration. Single-wavelength and multi-wavelength lasing has been observed at different lengths of the doped fiber in the filterless configuration.
Aditi Ghosh, Ranjan Sen, Atasi Pal
openaire +1 more source