A kind of ge-sn-se chalcogenide glass and preparation method thereof

A technology of chalcogenide glass, ge-sn-se, which is applied in the field of chalcogenide glass, can solve the problem of poor nonlinear performance of chalcogenide glass, and achieve good mid-to-far infrared transmission ability and near-infrared transmission characteristics.

Inactive Publication Date: 2017-09-19
NINGBO UNIV
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: aiming at the current situation that the nonlinear performance of the existing As-containing chalcogenide glass is obviously inferior to that of As-containing chalcogenide glass, based on the chalcogenide glass control model and glass structure dynamics research, provide a non-linear Ge-Sn-Se chalcogenide glass with higher linear performance than As-containing chalcogenide glass or equivalent without As and preparation method thereof

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  • A kind of ge-sn-se chalcogenide glass and preparation method thereof
  • A kind of ge-sn-se chalcogenide glass and preparation method thereof
  • A kind of ge-sn-se chalcogenide glass and preparation method thereof

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preparation example Construction

[0018] The preparation method of each embodiment Ge-Sn-Se chalcogenide glass comprises the following steps:

[0019] 1) Ingredients and vacuuming: Prepare various raw materials according to the ratio and mix them evenly, then put the mixed raw materials into the quartz tube and vacuumize to 10 -5 Pa, then the raw material is packaged in a closed quartz tube;

[0020] 2) High-temperature melting and quenching: put the quartz tube packaged with raw materials into a heating furnace for high-temperature melting, the heating temperature is 970 ° C, and the heating time is 25 hours. After the heating is completed, a melt is obtained in the quartz tube, and then the quartz tube is immersed in Quench the encapsulated melt in distilled water at 10°C, take it out immediately after the wall is removed, and obtain a semi-finished product of Ge-Sn-Se chalcogenide glass in the quartz tube;

[0021] 3) Annealing and cooling: anneal the semi-finished product of Ge-Sn-Se chalcogenide glass to...

Embodiment 1

[0023] The Fourier transform far-infrared spectrum of the Ge-Sn-Se chalcogenide glass of embodiment 1 is shown in figure 1 , the absorption spectrum see figure 2 . From figure 1 It can be seen that its transmission spectrum reaches 17um, and it has good mid-to-far infrared transmission ability; from figure 2 It can be seen that in the near-infrared band, its absorption is very small, and it has good near-infrared transmission characteristics.

[0024] Table 1 Raw material ratio and properties of glass in Examples 1-4 and Comparative Examples 1-4

[0025]

[0026]As can be seen from Table 1, the Ge-Sn-Se chalcogenide glass of the present invention has good anti-devitrification ability, and the optical band gap has a slight change, and its nonlinear performance is much higher than that of the existing As-free chalcogenide glass (Ge 28 Sb 12 Se 60 and 85GeS 2 15Sb 2 S 3 ), which is higher than or equivalent to As-containing chalcogenide glasses, and is As 40 Se 60...

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Abstract

The present invention proposes a Ge-Sn-Se chalcogenide glass and a preparation method thereof based on a chalcogenide glass regulation model and glass structure dynamics research. The composition formula of the Ge-Sn-Se chalcogenide glass of the present invention is GexSnySez, wherein x, y and z represent the mole fractions of Ge, Sn and Se respectively, x=1~25, y=1~25, z=50~98 . The non-linear performance of the Ge-Sn-Se chalcogenide glass of the present invention is much higher than that of the existing As-free chalcogenide glasses (for example, Ge28Sb12Se60 and 85GeS2·15Sb2S3), and is higher or equivalent than that of As-containing chalcogenide glasses, which is As40Se60 1 to 2 times, the nonlinear refractive index n2 can reach up to 4.125×10-17m2 / W, and it has good mid-to-far infrared transmission ability and near-infrared transmission characteristics.

Description

technical field [0001] The invention relates to a chalcogenide glass, in particular to a Ge-Sn-Se chalcogenide glass and a preparation method thereof. Background technique [0002] At present, most of the chalcogenide glasses with high nonlinear properties commercially available in the world are As-containing chalcogenide glasses, such as "Research Progress of Highly Nonlinear Chalcogenide Glasses" published by "Materials Herald" (Xu Yantao, Guo Haitao, Lu Min ,Lin Aoxiang, Peng Bo, Yu Fengxia.Research progress of highly nonlinear chalcogenide glasses[J].Materials Herald,2010,24(19):49.) report, chalcogenide glass As 40 Se 60 The nonlinear refractive index measured at a wavelength of 1550nm is 2.3×10 -13 cm 2 / W, 300 times higher than that of quartz glass, the two-photon absorption coefficient is about 2.6×10 -10 cm / W; "Nonlinear Ge-As-Se Chalcogenide Optical Fiber" published by "Functional Materials" (Ren He, Zhang Bin, Wang Rongping, Yang Anping, Zhang Mingjie, Guo Wei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/32C03C4/10
Inventor 陈飞飞乔北京黄益聪聂秋华戴世勋
Owner NINGBO UNIV
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