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

A technology of whispering gallery mode and glass-ceramics, which is applied in the field of optical devices, can solve the problems that the microcavity cannot realize laser output, reduce the quality factor of the microcavity, increase the surface scattering loss, etc., achieve single-mode laser output, reduce the threshold, Effect of improving slope efficiency

Active Publication Date: 2019-05-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, no one has used glass-ceramics to prepare whispering gallery resonators. The reason is that the micro-crystal phase is a different phase than the glass phase, and the precipitation of micro-crystals will increase the scattering loss of the material. The crystals precipitated on the surface will increase the surface scattering loss and seriously reduce the quality factor of the microcavity, making it impossible for the microcavity to achieve laser output with low threshold and high slope efficiency

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of Er 3+ Mole percentage of each component of doped whispering gallery mode microcavity glass: SiO 2 :20%, B 2 o 3 :35%, Na 2 CO 3 :20%, ZnO:10%, YF 3 :10%, Er 3 :5%.

[0032] (2) Weigh 50g of raw materials according to the formula, and mix them well in an agate mortar.

[0033] (3) Pour the uniformly mixed material into a 100ml corundum crucible, and wait for the high temperature box-type resistance furnace to rise to 1000 o At C, put the corundum crucible filled with materials into the furnace for 1 hour, then take it out and put it into the furnace to preheat to 700 o In the refractory brick mold of C, and the quartz glass rod is used to pick the wire, the active glass fiber with a diameter of 10 μm to 500 μm can be obtained.

[0034] (4) Cut off a section of active glass fiber with a length of 5 cm and a diameter of about 200 μm, melt the middle part with a heating source such as a carbon dioxide laser or a hydrogen-oxygen flame, and clamp b...

Embodiment 2

[0041] (1) Preparation of Er 3+ Mole percentage of each component of doped whispering gallery mode microcavity glass: SiO 2 :20%, B 2 o 3 : 39.9%, Na 2 CO 3 :20%, ZnO:10%, YF 3 :10%, Er 3 :0.1%.

[0042] (2) Weigh 50g of raw materials according to the formula, and mix them well in an agate mortar.

[0043] (3) Pour the uniformly mixed material into a 100ml corundum crucible, and wait for the high temperature box-type resistance furnace to rise to 1000 o At C, put the corundum crucible filled with materials into the furnace for 1 hour, then take it out and put it into the furnace to preheat to 700 o In the refractory brick mold of C, and the quartz glass rod is used to pick the wire, the active glass fiber with a diameter of 10 μm to 500 μm can be obtained.

[0044] (4) Cut off a section of active glass fiber with a length of 5 cm and a diameter of about 200 μm, melt the middle part with a heating source such as a carbon dioxide laser or a hydrogen-oxygen flame, and cl...

Embodiment 3

[0050] Example 3 (1) Preparation of Er 3+ Mole percentage of each component of doped whispering gallery mode microcavity glass: SiO 2 :20%, B 2 o 3 :39%, Na 2 CO 3 :20%, ZnO:10%, YF 3 :10%, Er 3 :1%.

[0051] (2) Weigh 50g of raw materials according to the formula, and mix them well in an agate mortar.

[0052] (3) Pour the uniformly mixed material into a 100ml corundum crucible, and wait for the high temperature box-type resistance furnace to rise to 1000 o At C, put the corundum crucible filled with materials into the furnace for 1 hour, then take it out and put it into the furnace to preheat to 700 o In the refractory brick mold of C, and the quartz glass rod is used to pick the wire, the active glass fiber with a diameter of 10 μm to 500 μm can be obtained.

[0053] (4) Cut off a section of active glass fiber with a length of 5 cm and a diameter of 200 μm, melt the middle part with a heating source such as a carbon dioxide laser or a hydrogen-oxygen flame, and cla...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/15C03C13/04C03C10/16H01S3/08H01S3/06
Inventor 董国平欧阳天昶蔡振禄康世亮甘久林杨中民邱建荣
Owner SOUTH CHINA UNIV OF TECH
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