RF Linewidth in Monolithic Passively Mode-Locked Semiconductor Laser
Résumé
We have analyzed theoretically and experimentally
the linewidth of the first harmonic of the photocurrent
(radio-frequency (RF) linewidth) in monolithic passively
mode-locked semiconductor lasers. Due to the absence of restoring
force, the timing jitter is directly related to the RF linewidth,
avoiding possible underestimations made with conventional
methods of phase noise measurement. The RF linewidth is also analytically
related to the pulse characteristics using Haus’s model.
The timing stability performance of a promising two-section
quantum-dot laser is presented using RF linewidth measurements.
Experimental evolution of the RF linewidth with power and
pulsewidth is finally compared to the analytical expression.
Domaines
Optique / photonique
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