Active–passive mode-locked Nd:YAG laser with passive negative feedback
A. Del CornoApplied Physics Division, Department of Electronics, University of Pavia, Via Abbiategrasso, 27100 Pavia, #N#ItalyV. KubecekFaculty of Nuclear Science and Physical Engineering, Technical University of Prague, Brehova 7, 11519 Prague 1, CzechoslovakiaJan MarekFaculty of Nuclear Science and Physical Engineering, Technical University of Prague, Brehova 7, 11519 Prague 1, CzechoslovakiaG. GabettaApplied Physics Division, Department of Electronics, University of Pavia, Via Abbiategrasso, 27100 Pavia, #N#ItalyGiancarlo RealiApplied Physics Division, Department of Electronics, University of Pavia, Via Abbiategrasso, 27100 Pavia, #N#Italy
1990en
ABI
Аннотация
Stationary ultrashort light pulses of 10-psec duration and with an energy of 10 microJ per pulse were obtained from an active-passive mode-locked Nd:YAG laser by using a two-photon absorption limiter (GaAs) inserted into the resonator. The stability of energy in the steady-state part of the pulse train, containing approximately 90 pulses, is better than +/-1.5%. The dynamics of the pulse-shortening mechanism are described, and it is shown that maximum pulse compression is reached after only approximately 10 round trips.
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