Lapping and Polishing of Crystalline KY(WO4)2: Toward High Refractive Index Contrast Slab Waveguides
Abstract
:1. Introduction
2. Preparation of KY(WO4)2-on-Glass Assemblies
2.1. Three-Grade Beveled KY(WO4)2 Edges
2.2. Preparation of KY(WO4)2 Assemblies
3. Lapping and Polishing Equipment and Consumables
3.1. Lapping and Polishing Machine
3.2. Lapping and Polishing Materials
3.3. Conditioning of Cast Iron and Polyurethane Disks
3.4. Overall Lapping and Polishing Process Description
4. Lapping and Polishing Process for KY(WO4)2
4.1. Lapping Process for KY(WO4)2 Layers
4.2. Polishing Process for KY(WO4)2 Layers
4.2.1. Polishing with SiO2 Suspension
4.2.2. Extended Polishing Time
4.2.3. Pre-Polishing with CeO2 Suspension
5. Lapping Toward Thin Layers
6. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Lapping Stage | Particles | Concentration (g/L) | Load (g/cm2) | Speed Disk (rpm) | Removal Rate (µm/min) | Logitech, UK Product nr. |
---|---|---|---|---|---|---|
Coarse | 9 µm Al2O3 | 250.0 | 200 | 35 | 10–15 | 0CON-009 |
Medium | 3 µm Al2O3 | 208.3 | 167 | 30 | 5–7 | 0CON-008 |
Fine | 1 µm Al2O3 | 187.5 | 133 | 25 | 1–2 | 0CON-007 |
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van Emmerik, C.I.; Kooijman, R.; Dijkstra, M.; Garcia-Blanco, S.M. Lapping and Polishing of Crystalline KY(WO4)2: Toward High Refractive Index Contrast Slab Waveguides. Micromachines 2019, 10, 674. https://doi.org/10.3390/mi10100674
van Emmerik CI, Kooijman R, Dijkstra M, Garcia-Blanco SM. Lapping and Polishing of Crystalline KY(WO4)2: Toward High Refractive Index Contrast Slab Waveguides. Micromachines. 2019; 10(10):674. https://doi.org/10.3390/mi10100674
Chicago/Turabian Stylevan Emmerik, Carlijn I., Roy Kooijman, Meindert Dijkstra, and Sonia M. Garcia-Blanco. 2019. "Lapping and Polishing of Crystalline KY(WO4)2: Toward High Refractive Index Contrast Slab Waveguides" Micromachines 10, no. 10: 674. https://doi.org/10.3390/mi10100674