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Electrical and optical low frequency noises in multimodal vertical cavity surface emitting lasers

✍ Scribed by F. Principato; S. Costa; G. Ferrante; F. Marin

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
243 KB
Volume
3
Category
Article
ISSN
1612-2011

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✦ Synopsis

Experimental investigations of the low frequency noise
of multimode 780 nm vertical cavity surface emitting lasers are
reported. Electrical noise, optical noise and their correlation
have been measured in the frequency range 1 Hz–95 kHz. The
results show that the main contribution to the electrical noise is
located in the distributed Bragg reflector layers of the laser.
The optical power and pump current noise sources are strongly
correlated below and around the threshold, while are weakly
correlated above threshold. It is argued that the noise in the
optical power is due to both free injection carrier noise and
optical gain fluctuations.

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