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Microspherical cavity laser based on ultra-low threshold multi-component holmium ion-doped glass material

A glass material and multi-component technology, applied in the direction of lasers, phonon exciters, laser components, etc., can solve the problems of high pumping threshold and low quality of microspheres, and achieve low collection energy efficiency, high Q value, The effect of low threshold

Active Publication Date: 2022-03-25
苏州凯文堡尼光电科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to solve the problems of low microsphere quality and high pumping threshold in the development process of existing microsphere lasers.

Method used

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  • Microspherical cavity laser based on ultra-low threshold multi-component holmium ion-doped glass material
  • Microspherical cavity laser based on ultra-low threshold multi-component holmium ion-doped glass material
  • Microspherical cavity laser based on ultra-low threshold multi-component holmium ion-doped glass material

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preparation example Construction

[0043] The preparation process of the microcavity laser includes the preparation of glass and the preparation of microspheres, including the following steps:

[0044] Weigh the high-purity raw materials according to a certain ratio, and stir them in a ball mill to fully mix the various raw materials;

[0045] Then put the mixture into a corundum crucible and heat it in a high temperature furnace at 850 °C for 90 min;

[0046]The molten glass liquid is drawn and cooled to form an optical fiber core. Use a carbon dioxide laser to taper the multi-component doped glass fiber, hang a weight on the end of the multi-component glass fiber, and use a focusing lens to focus the laser output from the carbon dioxide laser on the multi-component doped glass fiber. When the glass fiber reaches its own softening point, the glass fiber slowly falls due to the action of the heavy object, and the diameter of the fiber gradually decreases until the tapered diameter of the end of the doped glass...

Embodiment

[0054] The glass used in this example is 72TeO in molar percentage 2 -20ZnO-5Na 2 CO 3 -2Y 2 O 3 -1HoF 3 , in order to prepare a molten tellurite glass with a total weight of 10g, wherein the mass of each component is 8.023g, 1.1368g, 0.37g, 0.3153g, and 0.1549g in sequence. Glass filaments are obtained from molten tellurite glass using glass rods and further prepared into tellurate microspheres. Connect the 1150nm laser and the quartz tapered fiber, and connect the spectrometer of Yokogawa AQ6375B, turn on the 1150nm laser, increase the power, and obtain the 2.08-micron laser output from the spectrometer, and its output power is 53nW.

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Abstract

The invention discloses an ultra-low threshold multi-component holmium ion-doped glass material, the molar composition of the glass material is expressed as: 72TeO 2 ‑20ZnO‑5Na 2 CO 3 -2Y 2 o 3 and doped with Ho at a concentration of 1 mol% 3+ ion. The invention also provides a preparation method and a control method of a microsphere cavity laser based on an ultra-low threshold multi-component holmium ion-doped glass material. The surface of the microsphere cavity prepared by the invention is perfect, has a very high Q value, the threshold value of the produced laser is extremely low, and the coupling efficiency is greatly improved, which effectively solves the problems of low output power and low collection energy efficiency of the whispering gallery mode microcavity laser, and can be used Mid-infrared fiber microcavity lasers for high-efficiency, low-threshold narrow-bandwidth fibers.

Description

technical field [0001] The invention relates to the technical field of near-infrared lasers, in particular to a microsphere cavity laser based on ultra-low threshold multi-component holmium ion doped glass materials. Background technique [0002] Microsphere background: Optical microsphere cavity, which can confine light to very small microspheres, has high energy density and small mode field volume, and the optical mode that can stably transmit in the microsphere cavity is called echo wall pattern. When British scientist Lord Rayleigh studied the sound propagation in the curved corridor of St Paul's Cathedral, he found that two people who were far away from him could clearly hear the whispering of two people at the other end of the corridor, so this mode of sound transmission was called the "Whispering Corridor". model". In fact, there is a similar phenomenon in the Whispering Gallery of the Temple of Heaven in Beijing. Similar to the reflection of sound waves on a wall,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C13/04C03C4/00C03C3/12C03B37/15C03B37/023H01S3/067H01S3/16H01S3/17
CPCC03C13/048C03C4/0071C03C3/122C03B37/023C03B37/15H01S3/06708H01S3/06716H01S3/161H01S3/177C03B2201/60
Inventor 王鹏飞余吉波
Owner 苏州凯文堡尼光电科技有限公司
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