Title :
Femtosecond oscillators based on Yb:SrF2 and Yb:CaF2
Author :
Friebel, F. ; Druon, F. ; Boudeile, J. ; Papadopoulos, D.N. ; Hanna, M. ; Camy, P. ; Doualan, J.L. ; Benayad, A. ; Moncorgé, R. ; Cassagne, C. ; Boudebs, G. ; Georges, P.
Author_Institution :
Lab. Charles Fabry de l´´Inst. d´´Opt., Univ. Paris-Sud, Palaiseau, France
Abstract :
Yb-doped calcium fluoride crystals have been demonstrated to be a very good candidate for the development of diode-pumped femtosecond lasers. In this paper, the development of short pulse oscillators based on Yb:CaF2 and Yb:SrF2 is presented. One challenge when developing short-pulsed oscillators with Yb-doped fluorides concerns the fact that they exhibit very long upper state life time (2.4 ms for Yb:CaF2 and 2.9 ms Yb:SrF2) which counteract the stable modelocked operation in favour of Q-switch operation. Particular femtosecond modelocked regimes are studied in order to demonstrate sub-100-fs stable regime with Yb:CaF2 and femtosecond operation with Yb:SrF2 for the first time.
Keywords :
Q-switching; calcium compounds; laser mode locking; optical pulse generation; optical pumping; strontium compounds; ytterbium; CaF2:Yb; Q-switch; SrF2:Yb; diode pumping; femtosecond mode locking; short pulse oscillators; time 2.4 ms; time 2.9 ms; upper state life time; Calcium; Crystals; Diodes; Laser modes; Optimized production technology; Oscillators; Pulse generation; Pulse measurements; Stability; Tunable circuits and devices;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5194644
