Abstract

We show that the bifurcations between dynamical states originating in the nonlinear dynamics of an external-cavity semiconductor laser at constant current can be detected by its terminal voltage V. We experimentally vary the intensity fed back into the gain medium by the external cavity and show that the dc component Vdc of V tracks the optical intensity-based bifurcation diagram. It is shown using computational results based upon the Lang–Kobayashi model that whereas optical intensity accesses the dynamical-state variable |E|, V is related to population-inversion carrier density N. The change in feedback strength affects N and thereby the quasi-Fermi energy level difference at the p-i-n junction band-gap of the gain medium. The change in the quasi-Fermi energy-level thereby changes the terminal voltage V. Thus V is shown to provide information on the change in the dynamical-state variable N, which complements the more conventionally probed optical intensity.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Experimental bifurcation-cascade diagram of an external-cavity semiconductor laser

Byungchil Kim, Nianqiang Li, A. Locquet, and D. S. Citrin
Opt. Express 22(3) 2348-2357 (2014)

Mixed external cavity mode dynamics in a semiconductor laser

David W. Sukow, Michael C. Hegg, Jennifer L. Wright, and Athanasios Gavrielides
Opt. Lett. 27(10) 827-829 (2002)

Bifurcation to chaotic low-frequency fluctuations in a laser diode with phase-conjugate feedback

Émeric Mercier, Delphine Wolfersberger, and Marc Sciamanna
Opt. Lett. 39(13) 4021-4024 (2014)

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 (4)

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 (4)

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