Open AccessGeneration of tunable picosecond pulses by pulse stacking in an Yb-fiber gain-assisted pulse stacker
Author(s) -
Qiang Hao,
Wenxue Li,
Yao Li,
Ming Yan,
Heping Zeng
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.018894
Subject(s) - optics , materials science , pulse (music) , ultrashort pulse , pulse duration , bandwidth limited pulse , picosecond , fiber laser , femtosecond pulse shaping , optoelectronics , laser , physics , detector
We report on the generation of tunable picosecond pulses of high repetition rate by pulse stacking in an Yb-fiber stacker that benefited from high optical gain, properly time delay and laser synchronization. The gain-assisted pulse stacker could be controlled for pulse shaping to produce tunable pulse duration from ps to sub-ns range by managing the intracavity dispersion and adjusting the time delay. The energy loss during the pulse shaping process was compensated by the gain of a 60-cm-long Yb-fiber pumped by a diode laser. The temporal profiles of the output pulses were measured by using a special cross-correlation technique. The duration of the stacked pulses could be tuned from 5 to 200 ps with a controllable time interval.