Abstract
In recent years, compound glass microsphere resonator devices have attracted increasing interest and have been widely used in sensing, microsphere lasers, and nonlinear optics. Compared with traditional silica resonators, compound glass microsphere resonators have many significant and attractive properties, such as high-Q factor, an ability to achieve high rare earth ion, wide infrared transmittance, and low phonon energy. This review provides a summary and a critical assessment of the fabrication and the optical characterization of compound glasses and the related fabrication and applications of compound glass microsphere resonators.
Highlights
Over the past few decades, research interest in microsphere resonators has grown rapidly
Different host materials have different physical-chemical properties when in the form of compound glass, and many optical phenomena are limited by the properties of the material, microspheres made from compound glass can behave differently in different practical applications
Compound glass microsphere resonators overcome the limitations associated with traditional resonators in terms of glass materials
Summary
Over the past few decades, research interest in microsphere resonators has grown rapidly. Glass materials with a high nonlinear coefficient can be used in wavelength conversion, optical switching and signal regeneration; high rare-earth ion doped glass materials have wide applications in near Near-infrared (NIR) and Mid-infrared (MIR) lasers, and some glasses are sensitive to temperature, light, and greenhouse gases. Such materials can be used to fabricate many different compound glass microsphere sensors [9,10,11,12,13]. The applications of compound glass microsphere in microcavity lasing, nonlinear optical phenomena, and optical sensing are discussed, and the characterization of some compound glass microspheres with high-Q resonance are presented
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