Magneto-optical properties of yttrium iron garnet (YIG) thin films elaborated by radio frequency sputtering

Boudiar, T.; Payet-Gervy, Béatrice; Blanc-Mignon, M.-F.; Rousseau, Jean‐Jacques; Berre, M. Le; Joisten, Hélène; Canut, B.

doi:10.1117/12.513274

Cited by 22 publications

(19 citation statements)

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“…YIG films have also been deposited on various non-garnet substrates both by PLD [10,14,15] and sputtering [16,17]. However, YIG layers grown on non-garnet substrates are generally amorphous or poly-crystalline [10,[14][15][16][17], thus requiring a further annealing step in order to improve crystallinity and optical and magnetic properties [10,16,17]. Also, very large lattice and/or thermal expansion coefficient mismatch between YIG films and non-garnet substrate can cause formation of cracks in μm-thick films during high-temperature depositions or thermal annealing [16].…”

Section: Introductionmentioning

confidence: 99%

Pulsed laser deposition of high-quality μm-thick YIG films on YAG

Sposito¹,

May-Smith²,

Stenning³

et al. 2013

Opt. Mater. Express

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We report the epitaxial growth of high-quality μm-thick yttrium iron garnet (YIG) films on yttrium aluminium garnet (YAG) substrates by pulsed laser deposition (PLD). The effects of substrate temperature and oxygen pressure on composition, crystallinity, optical transmission and ferromagnetic resonance (FMR) linewidth have been investigated. An FMR linewidth as low as 1.75 mT at 6 GHz was achieved by depositing YIG on YAG substrates with (100) orientation at a substrate temperature of ~1600 K and with oxygen pressure of ~1 Pa.

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Section: Introductionmentioning

confidence: 99%

Pulsed laser deposition of high-quality μm-thick YIG films on YAG

Sposito¹,

May-Smith²,

Stenning³

et al. 2013

Opt. Mater. Express

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“…Although widely used in optical communications, such devices are still lacking in semiconductor integrated photonic systems 1,2 because of challenges in both materials integration and device design. On the materials side, magneto-optical garnets used in discrete nonreciprocal photonic devices show large lattice and thermal mismatch with semiconductor substrates, making it difficult to achieve monolithic integration of garnets with phase purity, high Faraday rotation and low transmission loss 3,4 , and requiring wafer bonding to incorporate them on a semiconductor platform. On the device side, non-reciprocal mode conversion (NRMC) and non-reciprocal phase shift (NRPS) integrated optical isolators have large footprints with length scales from millimetres to centimetres 5,6 , which severely limits the feasibility of large-scale and low-cost integration.…”

mentioning

confidence: 99%

On-chip optical isolation in monolithically integrated non-reciprocal optical resonators

et al. 2011

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Non-reciprocal photonic devices, including optical isolators and circulators, are indispensible components in optical communication systems. However, the integration of such devices on semiconductor platforms has been challenging because of material incompatibilities between semiconductors and magneto-optical materials that necessitate wafer bonding, and because of the large footprint of isolator designs. Here, we report the first monolithically integrated magneto-optical isolator on silicon. Using a non-reciprocal optical resonator on an silicon-on-insulator substrate, we demonstrate unidirectional optical transmission with an isolation ratio up to 19.5 dB near the 1,550 nm telecommunication wavelength in a homogeneous external magnetic field. Our device has a small footprint that is 290 mm in length, significantly smaller than a conventional integrated optical isolator on a single crystal garnet substrate. This monolithically integrated non-reciprocal optical resonator may serve as a fundamental building block in a variety of ultracompact silicon photonic devices including optical isolators and circulators, enabling future low-cost, large-scale integration.Non-reciprocal photonic devices that break the time-reversal symmetry of light propagation provide critical functionalities such as optical isolation and circulation in photonic systems. Although widely used in optical communications, such devices are still lacking in semiconductor integrated photonic systems 1,2 because of challenges in both materials integration and device design. On the materials side, magneto-optical garnets used in discrete nonreciprocal photonic devices show large lattice and thermal mismatch with semiconductor substrates, making it difficult to achieve monolithic integration of garnets with phase purity, high Faraday rotation and low transmission loss 3,4 , and requiring wafer bonding to incorporate them on a semiconductor platform. On the device side, non-reciprocal mode conversion (NRMC) and non-reciprocal phase shift (NRPS) integrated optical isolators have large footprints with length scales from millimetres to centimetres 5,6 , which severely limits the feasibility of large-scale and low-cost integration. Efforts have been pursued both in the monolithic integration of iron garnet and the exploration of other magneto-optical materials with better semiconductor compatibility. Polycrystalline Y 3 Fe 5 O 12 (YIG) films 3 , epitaxial Sr(Fe-doped InP films 9 have been demonstrated to have promising magneto-optical performance at a wavelength of 1,550 nm. In relation to device design, several monolithic non-reciprocal photonic devices capitalizing on optical resonance effects (for example, magneto-optical photonic crystals 10 , garnet thin-film based optical resonators 11 , silicon ring resonators with magneto-optical polymer cladding 12 and modulated ring resonators using non-reciprocal photonic transitions 1 ) have been theoretically analysed with a view to reducing the device footprint. However, the experimental realization of monolit...

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“…Fabrication procedures and parameters have important effects on MO properties since they determine the final stoichiometry of the materials . Postdeposition treatments and annealing at proper temperatures and durations are used to obtain desired phases and improve crystallization for better MO properties …”

Section: Magnetooptical Materialsmentioning

confidence: 99%

Advanced Materials and Device Architectures for Magnetooptical Spatial Light Modulators

Kharratian

Ürey

Onbaşlı

2019

Advanced Optical Materials

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Faraday and Kerr rotations are magnetooptical (MO) effects used for rotating the polarization of light in transmission and reflection from a magnetized medium, respectively. MO effects combined with intrinsically fast magnetization reversal, which can go down to a few tens of femtoseconds or less, can be applied in magnetooptical spatial light modulators (MOSLMs) promising for nonvolatile, ultrafast, and high‐resolution spatial modulation of light. With the recent progress in low‐power switching of magnetic and MO materials, MOSLMs may lead to major breakthroughs and benefit beyond state‐of‐the‐art holography, data storage, optical communications, heads‐up displays, virtual and augmented reality devices, and solid‐state light detection and ranging (LIDAR). In this study, the recent developments in the growth, processing, and engineering of advanced materials with high MO figures of merit for practical MOSLM devices are reviewed. The challenges with MOSLM functionalities including the intrinsic weakness of MO effect and large power requirement for switching are assessed. The suggested solutions are evaluated, different driving systems are investigated, and resulting device architectures are benchmarked. Finally, the research opportunities on MOSLMs for achieving integrated, high‐contrast, and low‐power devices are presented.

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Magneto-optical properties of yttrium iron garnet (YIG) thin films elaborated by radio frequency sputtering

Cited by 22 publications

References 0 publications

Pulsed laser deposition of high-quality μm-thick YIG films on YAG

Pulsed laser deposition of high-quality μm-thick YIG films on YAG

On-chip optical isolation in monolithically integrated non-reciprocal optical resonators

Advanced Materials and Device Architectures for Magnetooptical Spatial Light Modulators

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