Title :
Mechanisms of the few-optical cycle pulse spectrum shift in Cr4+:YAG laser
Author :
Kalashnikov, K.L. ; Sorokin, E. ; Naumov, S. ; Sorokina, I.T.
Author_Institution :
Inst. fur Photonik, Technische Univ. Wien, Vienna, Austria
Abstract :
In this paper, we analyzed various possible causes and attribute the pulse down-frequency shift and its spectral extra-broadening in Cr4+:YAG laser to the combined action of the intracavity third-order dispersion (TOD) and the stimulated Raman scattering (SRS) within an active medium. The results of the numerical simulations are in agreement with the experimental data obtained in the Kerr-lens mode-locked Cr4+:YAG laser providing five optical cycle pulse generation. We showed that the pulse spectrum extra-broadening noticeably exceeding the gain bandwidth is analogous to the spectral continuum generation in fibers in the vicinity of the zero group-delay dispersion.
Keywords :
chromium; infrared spectra; optical fibre dispersion; optical pulse generation; red shift; solid lasers; spectral line broadening; stimulated Raman scattering; yttrium compounds; Cr4+:YAG laser; Kerr-lens; YAG:Cr4+; YAl5O12:Cr; intracavity third-order dispersion; mode-locking; optical cycle pulse generation; optical cycle pulse spectrum shift; pulse down-frequency shift; spectral continuum generation; spectral extra-broadening; stimulated Raman scattering; Chromium; Fiber lasers; Fiber nonlinear optics; Laser mode locking; Nonlinear optics; Numerical simulation; Optical pulse generation; Optical pulses; Raman scattering; Stimulated emission;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1313513
