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Nonlinear compression of Q-Switched laser pulses to the realm of ultrashort durations

 
: Steinmetz, A.; Eidam, T.; Nodop, D.; Limpert, J.; Tünnermann, A.

:
Postprint (969 KByte; PDF; )

Optics Express 19 (2011), Nr.4, S.3758-3764
ISSN: 1094-4087
Englisch
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IOF ()

Abstract
Mode-locked lasers have an undisputed position in the ultrafast domain, though they are fairly expensive for miscellaneous applications. Thus, laser consumers revert to more cost-effective systems like Q-switched lasers. Here we report on the nonlinear compression of passively Q-switched laser pulses that allows accessing the time domain of sub-10-picoseconds, which has been so far the realm of mode-locked lasers. Laser pulses with an initial duration of 100ps from a passively Q-switched microchip laser are amplified in a photonic crystal fiber and spectrally broadened from 20pm to 0.68nm by self-phase modulation. These pulses are compressed in a grating compressor to a duration of 6ps with a pulse energy of 13µJ.

: http://publica.fraunhofer.de/dokumente/N-153929.html