Comparison of a Yb-doped fiber and a semiconductor taper for amplification of picosecond laser pulses

Sina M. Riecke; Kristian Lauritsen; Hendrick Thiem; Katrin Paschke; Rainer Erdmann

doi:10.1117/12.808688

6 February 2009 Comparison of a Yb-doped fiber and a semiconductor taper for amplification of picosecond laser pulses

Sina M. Riecke, Kristian Lauritsen, Hendrick Thiem, Katrin Paschke, Rainer Erdmann

Proceedings Volume 7212, Optical Components and Materials VI; 72120O (2009) https://doi.org/10.1117/12.808688
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

Abstract

In this paper, we compare two amplifier technologies, an ytterbium-doped fiber, and a semiconductor taper, regarding their suitability to amplify sub-100ps pulses. With both setups, we obtain amplification of the pulse energy by more than 10dB. However, suppression of self-lasing in the pulse intervals is critical, particularly in the case of the semiconductor amplifier which has a very short upper state lifetime. The seed pulses were generated by a gain-switched distributed feedback (DFB) laser at arbitrary repetition rates. They have widths of below 100ps FWHM, pulse energies of over 100pJ and a peak power of over 700mW. This makes them very suitable for optical amplification. With the fiber amplifier, the pulse form remained unchanged, while with the semiconductor amplifier, it broadened slightly. With both amplifiers, pulse peak powers of over 8W were obtained, which represents an amplification by more than 10dB.

Citation Download Citation

Sina M. Riecke, Kristian Lauritsen, Hendrick Thiem, Katrin Paschke, and Rainer Erdmann "Comparison of a Yb-doped fiber and a semiconductor taper for amplification of picosecond laser pulses", Proc. SPIE 7212, Optical Components and Materials VI, 72120O (6 February 2009); https://doi.org/10.1117/12.808688

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