Abstract

Faraday polarization rotators are commonly used in laser experiments. Most Faraday materials have a nonnegligible absorption, which is a limiting factor for high power laser optical isolators or for intracavity optical diodes. By using a stronger magnetic field and a shorter length of Faraday material, one can obtain the same polarization rotation and a reduced absorption. In this paper, we describe two permanent magnet arrangements that are easy to build and produce magnetic fields up to 1.7T, substantially more than commonly used. The field homogeneity is largely sufficient for a 30dB isolation ratio. We finally discuss the prospects for producing even larger fields with permanent magnets.

© 2011 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
High-vacuum-compatible high-power Faraday isolators for gravitational-wave interferometers

Oleg V. Palashov, Dmitry S. Zheleznov, Alexander V. Voitovich, Victor V. Zelenogorsky, Eugene E. Kamenetsky, Efim A. Khazanov, Rodica M. Martin, Katherine L. Dooley, Luke Williams, Antonio Lucianetti, Volker Quetschke, Guido Mueller, David H. Reitze, David B. Tanner, Eric Genin, Benjamin Canuel, and Julien Marque
J. Opt. Soc. Am. B 29(7) 1784-1792 (2012)

Competition of Faraday rotation and birefringence in femtosecond laser direct written waveguides in magneto-optical glass

Qiang Liu, S. Gross, P. Dekker, M. J. Withford, and M. J. Steel
Opt. Express 22(23) 28037-28051 (2014)

Simple, compact, high-performance permanent-magnet Faraday isolator

Daniel J. Gauthier, Paul Narum, and Robert W. Boyd
Opt. Lett. 11(10) 623-625 (1986)

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

Tables (2)

You do not have subscription access to this journal. Article tables 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 (15)

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