S. N. Bagayev, A. M. Goncharenko, V. F. Zakharyash, V. M. Klementyev, D. B. Kolker, S. A. Kuznetsov, Yu. A. Matyugin, V. S. Pivtsov, S. V. Chepurov, T. A. Birks, W. J. Wadsworth, P. J. Russell, “Experimental investigations of the influence of a tapered fibre on the stability of the intermode frequency of highly stable femtosecond pulses”, Kvantovaya Elektronika, 2002, Volume 32, Number 7,Pages <nobr>639

Laser applications and other topics in quantum electronics

Experimental investigations of the influence of a tapered fibre on the stability of the intermode frequency of highly stable femtosecond pulses

S. N. Bagayev^a, A. M. Goncharenko^a, V. F. Zakharyash^a, V. M. Klementyev^a, D. B. Kolker^a, S. A. Kuznetsov^a, Yu. A. Matyugin^a, V. S. Pivtsov^a, S. V. Chepurov^a, T. A. Birks^b, W. J. Wadsworth^b, P. J. Russell^b

^a Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
^b Department of Physics, University of Bath, UK

Abstract: The experimental procedure and the results of high-precision measurements of the intermode frequency of a femtosecond Ti: sapphire laser at the output of a tapered fibre are described. In the process of mode transformation, the stability of the intermode frequency is shown to degrade roughly by a factor of 2 for short averaging time intervals (10 s) and by a factor of 1.1 for long averaging time intervals (1000 s).

PACS: 42.62.Eh, 42.81.Dp, 06.30.Ft

Received: 20.02.2002
Revised: 13.06.2002