Abstract

We demonstrate measurements of the α factor of a distributed-feedback quantum cascade laser (QCL) by using a newly modified self-mixing interferometric technique exploring the laser itself as the detector. We find a strong dependence of the α factor on the injection current, ranging from 0.44 at 120mA to 2.29 at 180mA, which can be attributed to the inherent physics of QCLs.

© 2006 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Laser feedback interferometry: a tutorial on the self-mixing effect for coherent sensing

Thomas Taimre, Milan Nikolić, Karl Bertling, Yah Leng Lim, Thierry Bosch, and Aleksandar D. Rakić
Adv. Opt. Photon. 7(3) 570-631 (2015)

Self-mixing interferometer: analysis of the output signals

Enrico M. Randone and Silvano Donati
Opt. Express 14(20) 9188-9196 (2006)

Influence of external optical feedback on the alpha factor of semiconductor lasers

Yanguang Yu and Jiangtao Xi
Opt. Lett. 38(11) 1781-1783 (2013)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription