Materials issues in the layers required for integrated magneto-optical isolators

Luis J. Cruz-Rivera, Sang Yeob Sung, Jessie Cassada, Mariza R. Marrero-Cruz, Bethanie J Stadler

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

The development of integrated optical isolators is critical to the functional integration of optical devices and systems. This work will primarily elucidate a methodology to grow, by a semiconductor compatible process, the critical active material in monolithically integrated magneto-optical isolators; yttrium iron garnet (YIG: Y3Fe5O12). Reactive radio frequency (RF) sputtering was used to grow YIG on MgO, which is a promising buffer layer material for optical devices. The chemical, structural, optical, magneto-optical and magnetic properties of the resulting films have been studied by various techniques including energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Faraday rotation measurements and vibrating sample magnetometry (VSM). Low forward powers (lower limit of 12.3 W/cm2) grew YIG nuclei in an amorphous matrix and the number of these nuclei increased with increasing forward power. At powers exceeding 19W/cm2 film cracking occurred. The films with YIG had strong in-plane magnetizations with small coercive fields. Optical cladding layers compatible with YIG films have been grown through plasma enhanced chemical vapor deposition (PECVD) and thin film permanent magnets for biasing have been grown and optimized.

Original languageEnglish (US)
Pages (from-to)262-266
Number of pages5
JournalMaterials Research Society Symposium - Proceedings
Volume722
StatePublished - Jan 1 2002
EventMaterials and Devices for Optoelectronics and Microphotonics - San Francisco, CA, United States
Duration: Apr 1 2002Apr 5 2002

Fingerprint

isolators
yttrium-iron garnet
Optical devices
Yttrium
Faraday effect
Garnets
Buffer layers
Plasma enhanced chemical vapor deposition
Optical systems
functional integration
Permanent magnets
Sputtering
Magnetization
Magnetic properties
nuclei
Iron
Optical properties
Semiconductor materials
permanent magnets
X ray diffraction

Cite this

Materials issues in the layers required for integrated magneto-optical isolators. / Cruz-Rivera, Luis J.; Sung, Sang Yeob; Cassada, Jessie; Marrero-Cruz, Mariza R.; Stadler, Bethanie J.

In: Materials Research Society Symposium - Proceedings, Vol. 722, 01.01.2002, p. 262-266.

Research output: Contribution to journalConference article

Cruz-Rivera, Luis J. ; Sung, Sang Yeob ; Cassada, Jessie ; Marrero-Cruz, Mariza R. ; Stadler, Bethanie J. / Materials issues in the layers required for integrated magneto-optical isolators. In: Materials Research Society Symposium - Proceedings. 2002 ; Vol. 722. pp. 262-266.
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