Sub-60-fs Timing Jitter of a SESAM Modelocked VECSEL

We present noise measurements of a pulse train emitted from an actively stabilized semiconductor-saturable-absorber-mirror (SESAM) modelocked vertical external cavity surface emitting laser (VECSEL). The laser generated 6-ps pulses with 2-GHz pulse-repetition rate and 40-mW average output power. The...

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Bibliographic Details
Published in:IEEE photonics journal 2013-02, Vol.5 (1), p.1400107-1400107
Main Authors: Wittwer, V. J., van der Linden, R., Tilma, B. W., Resan, B., Weingarten, K. J., Sudmeyer, T., Keller, U.
Format: Article
Language:English
Subjects:
diode-pumped lasers
infrared lasers
Laser modes
Laser noise
Laser stability
Measurement by laser beam
modelocked lasers
Photon sources
semiconductor lasers
Surface emitting lasers
Timing jitter
ultrafast lasers
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Summary:We present noise measurements of a pulse train emitted from an actively stabilized semiconductor-saturable-absorber-mirror (SESAM) modelocked vertical external cavity surface emitting laser (VECSEL). The laser generated 6-ps pulses with 2-GHz pulse-repetition rate and 40-mW average output power. The repetition rate was phase locked to a reference source using a piezo actuator. The timing phase noise power spectral density of the laser output was detected with a highly linear photodiode and measured with a signal source analyzer. The resulting RMS timing jitter integrated over an offset frequency range from 1 Hz to 100 MHz gives a value of below 60 fs, lower than previous modelocked VECSELs and comparable with the noise performance of ion-doped solid-state lasers. The RMS amplitude noise was below 0.4% (1 Hz to 40 MHz) and not influenced by the timing phase stabilization.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2012.2236546