Abstract
The intensity noise spectra of several
multi-transverse mode 1550-nm vertical-cavity
surface-emitting lasers (VCSELs) have been
experimentally investigated. For a VCSEL emitting in two
parallel polarized transverse modes the noise spectra of
the individual modes and total power show two resonance
peaks. The frequencies at which both peaks appear have
been measured as a function of the bias current. Our
experimental results confirm the theoretical predictions
of Valle Differences in the noise spectra are
experimentally observed when considering a VCSEL
emitting in three transverse modes with polarization
instabilities. We show that additional peaks appear in
the noise spectra of the total power as the bias current
is increased.
© 2011 IEEE
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