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Proceedings Paper

Kerr lens mode-locked operation of a Yb:KYW laser
Author(s): Vladimir L. Kalashnikov; F. Mejid; Igor G. Poloyko; Victor P. Mikhailov
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Paper Abstract

Using a modified ABCD-matrix approach accounting for nonlinear refraction in active medium, we determined the ranges of cavity parameters that provide a mode-locking of Yb:KYW-laser in usual z-fold cavity configuration. Taking the cavity parameters that provide a most efficient mode locking and based on fluctuation model, we performed a numerical simulation of laser operation. We used for our calculations the side-band pump power of 6 W at 982 nm with 1 cm X 50 micrometers beam cross section in active medium and the length of 1 cm for KYW crystal. Calculations showed that self-starting operation is possible with these parameters and dispersion compensation allows for bandwidth-limited ultrashort pulse generation. The shortest pulse duration was determined to be approximately 200 fs with self-starting build-up time of 130 microsecond(s) . Such a built-up time is comparable and even shorter than that one for the lasers with semiconductor saturable absorbers. The region of negative dispersion provided by prism pair where a stable ultrashort pulse generation takes place was determined to be (-17000 - -42000) fs2.

Paper Details

Date Published: 4 May 1999
PDF: 3 pages
Proc. SPIE 3613, Solid State Lasers VIII, (4 May 1999); doi: 10.1117/12.347694
Show Author Affiliations
Vladimir L. Kalashnikov, Belarus State Univ. (Belarus)
F. Mejid, Belarus State Univ. (Belarus)
Igor G. Poloyko, Belarus State Univ. (Belarus)
Victor P. Mikhailov, Belarus State Univ. (Belarus)


Published in SPIE Proceedings Vol. 3613:
Solid State Lasers VIII
Richard Scheps, Editor(s)

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