Scheduled System Maintenance:
On Monday, April 27th, IEEE Xplore will undergo scheduled maintenance from 1:00 PM - 3:00 PM ET (17:00 - 19:00 UTC). No interruption in service is anticipated.
By Topic

Intensity fluctuations in each longitudinal mode of a multimode AlGaAs laser

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Ito, Takeshi ; Nippon Telegraph and Telephone Public Corp., Japan ; Machida, S. ; Nawata, K. ; Ikegami, Tetsuhiko

The light-intensity fluctuations in each longitudinal mode of CW AlGaAs-GaAs stripe-geometry double-heterostructure junction lasers which oscillate in many modes are investigated experimentally, when the operating current is within a few tens of percent above threshold. In addition, experimental results about the noise characteristics for the lasers directly modulated are discussed in relation to the lasing-spectrum broadening. The total intensity output can be well stabilized at currents above threshold by larger than 10 percent, even when the same laser is modulated by large pulse currents at such high speeds as 400 Mbits. However, the relative noise power for each mode is about 30 dB larger than that for total modes within the whole frequency region observed in this work, and the noise spectrum becomes essentially flat when the laser is modulated. The relative fluctuations for each mode of the modulated laser seems to be nearly equal to the low-frequency fluctuations in each mode without modulation for a given normalized pump rate.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:13 ,  Issue: 8 )