Intracavity gain and absorption dynamics of hybrid modelocked semiconductor lasers using multiple quantum well saturable absorbers
作者:
S. Gee,
R. Coffie,
P. J. Delfyett,
G. Alphonse,
J. Connolly,
期刊:
Applied Physics Letters
(AIP Available online 1997)
卷期:
Volume 71,
issue 18
页码: 2569-2571
ISSN:0003-6951
年代: 1997
DOI:10.1063/1.119333
出版商: AIP
数据来源: AIP
摘要:
Time resolved intracavity gain, saturable absorption dynamics, intracavity intensity pulse profiles, and their corresponding spectrograms, were measured in an external cavity hybrid mode-locked semiconductor diode laser. These measurements were performed to obtain fundamental information of the mode-locking dynamics and to determine their role in the pulse shaping and chirping dynamics. The results of these experiments show that the integrating nonlinearity associated with gain depletion, coupled with group velocity dispersion, leads to asymmetric intensity pulse profiles with predominantly cubic temporal phase, while saturable absorption coupled with group velocity dispersion tends to linearize the chirp. Exploitation of these dynamics may allow researchers to generate optical pulses with higher peak intensities than previously reported. ©1997 American Institute of Physics.
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