Abstract

We derive a delay-differential equation model that describes continuous-wave (cw) or passively Q-switched (PQS) two-frequency solid-state lasers submitted to frequency-shifted feedback (FSF). The study focuses on the locking of the beat note between the two free-running laser frequencies to a reference external frequency. The locking domain is obtained analytically in the cw regime. The PQS regime is treated by adding a saturable absorber population in the model equations. In this case, numerical simulations permit us to evaluate a locking range that is smaller than in the cw case. We find good agreement between the theoretical predictions and experiments carried out with a cw diode-pumped dual-polarization Nd:YAG laser as well as with previously published experimental results obtained with cw Er:Yb:glass [Opt. Lett. 32, 1099 (2007)] and PQS Nd:YAG [Opt. Lett. 33, 2524 (2008)] lasers. Applications of the FSF locking technique include the lidar–radar technique, for which a highly coherent beat note is required.

© 2011 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Dynamics of frequency shifted feedback lasers: simulation studies

M. Stellpflug, G. Bonnet, B. W. Shore, and K. Bergmann
Opt. Express 11(17) 2060-2080 (2003)

Pulse-to-pulse coherent beat note generated by a passively Q-switched two-frequency laser

Marc Brunel and Marc Vallet
Opt. Lett. 33(21) 2524-2526 (2008)

Investigations on acousto-optically Q-switched frequency-shifted feedback laser with Nd:YVO4 crystal

Mali Gong, Chengqiang Lu, Ping Yan, and Huang Lei
Opt. Express 15(12) 7401-7406 (2007)

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 (7)

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 (11)

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