Glass ceramics whispering gallery mode resonant cavity capable of outputting single mode high-performance laser and preparation method thereof

Abstract

The invention discloses a glass ceramics whispering gallery mode resonant cavity capable of outputting single mode high-performance laser and a preparation method thereof, and belongs to the field ofoptical devices. The method comprises the following steps: firstly mixing raw materials for preparing the glass resonant cavity with rear earth active ion raw materials sufficiently, then carrying outmelting and rod winding to obtain active fiberglass; drawing the active fiberglass to tapered fiber by melt extraction, and truncating the tapered fiber in the middle to obtain single taper fibers; melting the thin ends of the single taper fibers through a heating source, and forming a microsphere cavity by utilizing the action of surface tension; carrying out heat treatment or laser-induced treatment on the microsphere cavity to obtain a glass ceramics microsphere cavity, and carrying out coupling with the tapered fiber and packaging to obtain the glass ceramics whispering gallery mode resonant cavity. According to the invention, the preparation process is simple, the prepared glass ceramics microsphere cavity has relatively high quality factor, the influence on active ion gain propertyof amorphous state and relatively high phonon energy of glass is improved by the separation of microcrystal, and laser output with lower threshold value and higher slope efficiency can be realized.

Description

technical field

[0001] The invention belongs to the field of optical devices, and in particular relates to a glass-ceramic whispering gallery mode resonator capable of outputting single-mode high-performance laser and a preparation method thereof. Background technique

[0002] Whispering gallery mode optical microcavity has a very high quality factor and a very small mode volume, which can confine light in a micron-scale or even sub-micron-scale microcavity and enhance the interaction between light and matter. It is widely used in micro-laser, sensing and other fields. There are important application prospects. The glass whispering gallery mode resonator has the advantages of simple preparation process and high quality factor, and is an ideal material for the preparation of micro lasers. However, the amorphous nature of glass and its high phonon energy and wide phonon energy distribution can seriously affect the gain properties of rare-earth activated ions, thereby deterior...

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