Efficient small-size eye-safe Q-switched erbium-doped fiber source

Dominique Pagnoux; Philippe Roy; Laurent Mouneu; Thierry Midavaine; Philippe Jacquier

doi:10.1117/12.308630

26 May 1998 Efficient small-size eye-safe Q-switched erbium-doped fiber source

Dominique Pagnoux, Philippe Roy, Laurent Mouneu, Thierry Midavaine, Philippe Jacquier

Proceedings Volume 3404, ALT'97 International Conference on Laser Surface Processing; (1998) https://doi.org/10.1117/12.308630
Event: ALT '97 International Conference on Laser Surface Processing, 1997, Limoges, France

Abstract

An efficient all-fiber 1.53 micrometers high peak power and high repetition rate pulse laser source is presented. The first stage is a ring fiber laser principally including a short length of Er³⁺ doped fiber pumped by a 980/500 mW compact MOPA, and a short rise time acoustooptic modulator. Another length of a different Er³⁺ doped fiber pumped by a second MOPA works as an amplifying stage for the emitted pulses. With this optimized source, 30 ns/1 kW triangular pulses at 10 kHz, with a stability better than 0.2% have been obtained. This corresponds to a conversion efficiency of the optical power from the pump to the pulses reaching 30%. These performances make this source very suitable for eyesafe range finding and free space communications. Thanks to its robustness and compactness due to its all-fiber design and to the use of small size pump MOPAs, this source is well-adapted for portable field applications.

Citation Download Citation

Dominique Pagnoux, Philippe Roy, Laurent Mouneu, Thierry Midavaine, and Philippe Jacquier "Efficient small-size eye-safe Q-switched erbium-doped fiber source", Proc. SPIE 3404, ALT'97 International Conference on Laser Surface Processing, (26 May 1998); https://doi.org/10.1117/12.308630

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