The paper presents a current state of the project aiming to develop a compact and mobile pulsed laser source, operated in “eye-safe” spectral region (1.5 μm). It will be a high power, all-fiber system generating nanosecond pulses with repetition rate ranging from tens to hundreds kHz and built in Master Oscillator Power Amplifier (MOPA) configuration. First amplifying cascade of the system has been developed. Distributed Feedback (DFB) laser diode with home-built supply and pulse control system was used as a master oscillator. It can generate rectangular laser pulses with independently changeable repetition rate (10 – 200 kHz) and pulse width (20 – 300 ns). The system provides over 34 dB optical gain. In addition, simulations of amplification laser radiation in the active fiber for different input pulse energies in relation to saturation energy were presented. Furthermore theoretical and experimental optimization of an active fiber length was done. In the first elaborated stage of amplifier 18,1 % slope efficiency was obtained.

Date Published: 22 January 2013
PDF: 6 pages
Proc. SPIE 8702, Laser Technology 2012: Progress in Lasers, 870202 (22 January 2013);

Published in SPIE Proceedings Vol. 8702:
Laser Technology 2012: Progress in Lasers
Wieslaw L Wolinski; Zdzislaw Jankiewicz; Ryszard S. Romaniuk, Editor(s)