Characterization of sub-nanosecond pulsed laser amplification with Er:Yb co-doped phosphate glass fibers

Moschovitz, Omri; Boetti, Nadia G.; Pugliese, Diego; Gallichi-Nottiani, Duccio; Milanese, Daniel; Janner, Davide; Ishaaya, Amiel A.

doi:10.1364/OL.402575

We present an experimental characterization of the amplification of sub-nanosecond duration laser pulses at a wavelength of 1538 nm in short custom-made Er:Yb phosphate glass fibers with different core diameters. The fibers vary in their diameter from 100 µm (highly multi-mode) down to 12 µm (single-mode). The peak power, energy per pulse, and spectral shape of the amplified signal are presented. With our input pulses, the measurements show that the large core diameter fibers do not increase the amplification of the 1538 nm signal. We believe this is due to the high re-absorption of the Er3+ ions in the phosphate fiber. The optimal fiber geometry was found to have a core diameter of 20 µm with a length of 14 cm. The maximum peak power is 8.25 kW, corresponding to a net gain of 10.9 dB, with a pulse duration of 0.7 ns and a repetition rate of 40 kHz.

Characterization of sub-nanosecond pulsed laser amplification with Er:Yb co-doped phosphate glass fibers / Moschovitz, Omri; Boetti, Nadia G.; Pugliese, Diego; Gallichi-Nottiani, Duccio; Milanese, Daniel; Janner, Davide; Ishaaya, Amiel A.. - In: OPTICS LETTERS. - ISSN 0146-9592. - ELETTRONICO. - 45:18(2020), pp. 5291-5294. [10.1364/OL.402575]

Titolo:	Characterization of sub-nanosecond pulsed laser amplification with Er:Yb co-doped phosphate glass fibers
Autori:	Moschovitz, Omri BOETTI, NADIA GIOVANNA PUGLIESE, DIEGO GALLICHI NOTTIANI, DUCCIO MILANESE, DANIEL JANNER, DAVIDE LUCA Ishaaya, Amiel A. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2020
Rivista:	OPTICS LETTERS
Digital Object Identifier (DOI):	http://dx.doi.org/10.1364/OL.402575
Appare nelle tipologie:	1.1 Articolo in rivista

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