Compound R2MB10O10 as non-linear optical crystal and its preparation and use

A technology of R2MB10O19 and nonlinear optics, which is applied in the field of compound R2MB10O19 nonlinear optical crystals and its preparation method and application, which can solve the problems of high cost, affecting the large-scale application of fully solidified blue-green lasers, and slow growth speed.

Inactive Publication Date: 2002-05-08
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

These materials have disadvantages in crystal growth: since KTP and LBO are non-identical melting compounds, and BBO has a phase transition at the melting point, they must be grown using a flux method, the growth rate is slow, and it is difficult to obtain large-sized crystals. High cost affects the large-scale application of all-solid-state blue-green lasers

Method used

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  • Compound R2MB10O10 as non-linear optical crystal and its preparation and use

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preparation example Construction

[0016] Compound R of the present invention 2 MB 10 o 19 The preparation method is characterized in that will contain R 2 o 3 and MO and B 2 o 3 After the compound raw materials with a molar ratio of 1:1:5 are mixed evenly, the chemical synthesis reaction is carried out; the compound raw materials used can be the corresponding oxides or chlorides or carbonates or nitrates or oxalates or borates of R and M and H 3 BO 3 or B 2 o 3 .

[0017] In principle, with the above system, compound R can be prepared by general chemical synthesis methods 2 MB 10 o 19 ; Preferred solid-phase reaction method, that is: will contain R 2 o 3 and MO and B 2 o 3 After the compound raw materials with a molar ratio of 1:1:5 are mixed evenly, they are heated for solid-state reaction, and the chemical expression can be obtained as R 2 MB 10 o 19 compound of.

[0018] The following are a few typical R 2 MB 10 o 19 chemical reaction:

[0019]

[0020]

[0021] ...

Embodiment 1

[0045] Preparation of powdered La 2 CaB 10 o 19 compound.

[0046] 81.45 g La 2 o 3 and 25.02 g CaCO 3 and 154.58 g H 3 BO 3 After mixing evenly, put it into a Φ50×35mm open platinum crucible, put the crucible into a muffle furnace (heating electric furnace), sinter it at a constant temperature of 950°C for 48 hours, and obtain La 2 CaB 10 o 19 compound powder. Determined by differential thermal analysis, the melting point of the same component is about 1067°C.

[0047] Using the same method as above, the La 2 o 3 Replaced by other rare earth oxides or Y 2 o 3 , the CaCO 3 Replaced by SrCO 3 or BaCO 3 , can get the corresponding R 2 MB 10 o 19 compound.

Embodiment 2

[0049] Preparation of powder (La 0.96 Nd 0.04 ) 2 CaB 10 o 19 compound.

[0050] 52.13 g La 2 o 3 and 2.243 g Nd 2 o 3 and 16.68 g CaCO 3 and 58.02 g B 2 o 3 After mixing evenly, put it into an open platinum crucible of Φ40×40mm, sinter it at a constant temperature of 980°C for 40 hours, and obtain it after grinding (La 0.96 Nd 0.04 )2 CaB 10 o 19 compound powder. Compound (La 0.96 Nd 0.04 ) 2 CaB 10 o 19 Has luminous properties.

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Abstract

The present invention provides one compound with chemical expression of R2MB10O10, (where R is one or several elements selected from rare earth elements and Y and M is Ca, Sr or Ba); and one monocrystal and their preparation and application. The compound has the feature of congruent melting. the R2MB10O10 monocrystal may be prepared through the melt process, especially czochralski process or the pulling method, has non-linear optical effect similar to LBO but low cost, large size, good mechanical performance and no slaking, and suits the need of laser frequency change in blue and green light band. The monocrystal may be used in producing non-linear optical devices and that with doped rare earth laser activating ion may be used in producing non-linear composite laser function device.

Description

technical field [0001] The present invention relates to chemical formula R 2 MB 10 o 19 (R represents one or more elements, selected from rare earth elements or Y; M selected from Ca, Sr, Ba) compound, its nonlinear optical crystal, the preparation method of this crystal, and the nonlinear optical crystal produced by using the crystal Devices and laser nonlinear optical composite functional devices. technical background [0002] Crystals with nonlinear optical effects are called nonlinear optical crystals. Here nonlinear optical effects refer to effects such as frequency doubling, sum frequency, difference frequency, and parametric amplification. Nonlinear optical effects are only possible in crystals that do not have a center of symmetry. Using the nonlinear optical effect of crystals, nonlinear optical devices such as second harmonic generators, up and down frequency converters, and optical parametric oscillators can be made. The laser ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B35/10G02F1/355H01S3/16
CPCC01B35/10G02F1/3551H01S3/1666
Inventor 吴以成刘建国傅佩珍王俊新赵贵文
Owner UNIV OF SCI & TECH OF CHINA
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