Ip. Bilinsky et al., Self-starting mode locking and Kerr-lens mode locking of a Ti : Al2O3 laser by use of semiconductor-doped glass structures, J OPT SOC B, 16(4), 1999, pp. 546-549
We report a novel wedge-shaped saturable absorber structure based on commer
cial semiconductor-doped glasses. By use of several different semiconductor
-doped glasses, fast saturable absorber passive mode locking of a Ti:Al2O3
laser was demonstrated, which generated pulse durations as short as 2 ps in
the 780-860-nm range. These saturable absorbers were also used to start Ke
rr-lens mode locking, and transform-limited 52-fs pulses were generated. Ph
otodarkening effects in the semiconductor-doped glasses have been observed
and characterized on a femtosecond time scale. (C) 1999 Optical Society of
America [S0740-3224(99)01204-7] OCIS codes: 140.3580, 140.3590, 140.4050.