18 November 2008 Pulsed 1.55μm all-fiber laser combining high energy, ultranarrow linewidth and optimal spatial beam quality
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Proceedings Volume 7138, Photonics, Devices, and Systems IV; 713807 (2008) https://doi.org/10.1117/12.817971
Event: Photonics, Devices, and Systems IV, 2008, Prague, Czech Republic
Abstract
In this letter, we report on the study of a new all-fiber laser source suitable for coherent Doppler LIDAR use in the eyesafe domain. The laser consists on a MOPA configuration where the Master Oscillator is a modulated ultranarrow (< 8 kHz) fiber laser. The optical amplifiers are also all-fibered and make use of a new Large Mode Area (LMA) index pedestal fiber that is very effective in limiting the non-linear effects without quality degradation of the laser beam. The amplified pulses have a maximum energy of 0.15 mJ for a duration of 340 ns at a repetition rate of 15 kHz. The average output power of the laser is 2.5 W, free of Stimulated Brillouin Scattering and with a measured M2 = 1.3.
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Flavien Liégeois, Yves Hernandez, Damien Kinet, Domenico Giannone, Thierry Robin, Benoît Cadier, "Pulsed 1.55μm all-fiber laser combining high energy, ultranarrow linewidth and optimal spatial beam quality", Proc. SPIE 7138, Photonics, Devices, and Systems IV, 713807 (18 November 2008); doi: 10.1117/12.817971; https://doi.org/10.1117/12.817971
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