Demonstration of phase correlation in multiwavelength mode-locked semiconductor diode lasers.
Wideband spectral phase correlation is demonstrated from a multiwavelength mode-locked semiconductor laser. By use of frequency-resolved optical gating techniques, significant phase correlation was observed between multiple intracavity oscillating wavelengths, with wavelength separations of ~1 nm . The resultant temporal characteristics show a substantial modulation owing to the spectral coupling induced by intracavity-generated four-wave mixing. This result may lead to novel methods for directly generating ultrafast subpicosecond optical pulse sequences with spectrally tailored amplitude and phase characteristics from actively mode-locked semiconductor lasers.
Shi
H
H
Nitta
I
I
Schober
A
A
Delfyett
P J
PJ
Alphonse
G
G
Connolly
J
J