High peak power eye-safe coherent EYDFA laser source

Y. Chen; B. Matheson; W. Torruellas; J. Faroni; N. Jacobson; K. Tankala

doi:10.1117/12.721458

10 May 2007 High peak power eye-safe coherent EYDFA laser source

Y. Chen, B. Matheson, W. Torruellas, J. Faroni, N. Jacobson, K. Tankala

Proceedings Volume 6552, Laser Source Technology for Defense and Security III; 65520T (2007) https://doi.org/10.1117/12.721458
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

Coherent Laser Radar is a powerful remote sensing tool, which can be applied to range-finding, target discrimination, vibrometric monitoring, air pollution monitoring, aircraft wake-vortex and clear-air turbulence analysis. A high power, highly efficient, near diffraction limited and highly reliable pulsed coherent laser source is a key sub-system required in a coherent Lidar sensor. When humans are involved, eye safe laser emission is also typically required. Therefore a highly efficient fiber laser system based on a coherent Master-Oscillator followed by a chain of Erbium (EDFA) and Erbium co-doped with Ytterbium fiber amplifiers (EYDFA) is ideally suited for this application suite. In this paper, we are presenting an all polarization-maintaining fiber architecture and experimental results on such a high peak power fiber laser system allowing for versatile modulation strategies at a wavelength of 1563nm commensurate with a clear atmospheric transmission window and eye-safe operation. The system is constituted by three amplification stages, all based on Polarization-Maintaining fiber. With 660ns and 20Kpps, over 500W peak power pulses have been experimentally demonstrated with near diffraction limited performance with this all PM fiber system.

Citation Download Citation

Y. Chen, B. Matheson, W. Torruellas, J. Faroni, N. Jacobson, and K. Tankala "High peak power eye-safe coherent EYDFA laser source", Proc. SPIE 6552, Laser Source Technology for Defense and Security III, 65520T (10 May 2007); https://doi.org/10.1117/12.721458

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