Инд. авторы:	Kharenko D.S., Shtyrina O.V., Podivilov E.V., Fedoruk M.P., Babin S.A., Yarutkina I.A.
Заглавие:	Generation and scaling of highly-chirped dissipative solitons in an Yb-doped fiber laser
Библ. ссылка:	Kharenko D.S., Shtyrina O.V., Podivilov E.V., Fedoruk M.P., Babin S.A., Yarutkina I.A. Generation and scaling of highly-chirped dissipative solitons in an Yb-doped fiber laser // Laser Physics Letters. - 2012. - Vol.9. - Iss. 9. - P.662-668. - ISSN 1612-2011. - EISSN 1612-202X.
Внешние системы:	DOI: 10.7452/lapl.201210060; РИНЦ: 20486252; SCOPUS: 2-s2.0-84866764616; WoS: 000307562500008;
Реферат:	eng: Generation of highly-chirped dissipative solitons (HCDS) in normal-dispersion cavity is treated now as a prospective technique to increase energy of femtosecond pulses delivered by an oscillator. Based on recently developed analytical model describing stable HCDS solutions, we have realized experimentally the regime of highly-chirped pulses in an Yb-doped fiber laser with passive mode locking via nonlinear polarization evolution (NPE) and tested the model predictions. It has been shown that the generated pulses satisfy the condition of equality for nonlinearity and dispersion induced phase shifts characterizing dissipative solitons, and their chirp parameter is growing nearly linearly with increasing cavity length. This results in nearly linear increase of the pulse energy, but the linear scaling is valid only up to some limit after which the stability of the regime is worsen significantly. At the limit length of similar to 5 m the pulses with nJ energy level and several ps duration are generated being compressed to similar to 200 fs out of the cavity. The reason of the stability break is shown to be an excessive rotation of polarization ellipse in the cavity, so it is proposed to use polarization-maintaining fibers to increase scaling range in HCDS regime obtained by means of NPE mode locking. (C) 2012 by Astro, Ltd.
Издано:	2012
Физ. характеристика:	с.662-668