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A kind of lithium phosphate cesium yttrium nonlinear optical crystal and its preparation method and application

A nonlinear optics and crystal technology, applied in nonlinear optics, chemical instruments and methods, optics, etc., can solve problems such as small birefringence, CLBO is easy to deliquescence, difficult to obtain, etc., and achieve good mechanical properties and stable physical and chemical properties , easy processing effect

Active Publication Date: 2020-04-10
MINJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the birefringence of LBO is relatively small, and the quadrupling output of 1064 nm wavelength laser cannot be realized; the birefringence of BBO is relatively large, and there is a photorefractive effect when used for quadrupling output of 1064 nm wavelength laser, which limits However, CLBO is extremely deliquescent and difficult to achieve commercial applications; KBBF is difficult to obtain due to its severe layered growth habit. c thicker crystals

Method used

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  • A kind of lithium phosphate cesium yttrium nonlinear optical crystal and its preparation method and application
  • A kind of lithium phosphate cesium yttrium nonlinear optical crystal and its preparation method and application
  • A kind of lithium phosphate cesium yttrium nonlinear optical crystal and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 Powdered LiCs 2 Y 2 (PO 4 ) 3 Compound preparation

[0024] Adopt solid phase reaction method to prepare, and its reaction equation is as follows:

[0025] 0.5Li 2 CO 3 +Cs 2 CO 3 +Y 2 o 3 +3NH 4 h 2 PO 4 =LiCs 2 Y 2 (PO 4 ) 3 +1.5CO 2 ↑+4.5H 2 O↑+3NH 3 ↑.

[0026] The specific operation steps are: weigh Li respectively 2 CO 3 0.222 g (0.003 mol), Cs 2 CO 3 1.955 g (0.006 mol), Y 2 o 3 1.355 g (0.006 mol), NH 4 h 2 PO 4 1.035 g (0.009 mol), put them into a mortar, mix and grind evenly, then put them into a corundum ceramic crucible, compact them, put them into a muffle furnace, and raise the temperature to 500 °C at a rate of 10 °C / hour ℃, heat preservation and sintering for 24 hours, then lower to room temperature, take it out, grind evenly, then raise the temperature to 900 ℃ at a rate of 10 ℃ / hour, sinter for 48 hours, take it out and grind it more than once in the middle, and then get the pure phase LiCs 2 Y 2 (PO 4 ) 3...

Embodiment 2

[0028] Example 2 Powdered LiCs 2 Y 2 (PO 4 ) 3 Compound preparation

[0029] Adopt solid phase reaction method to prepare, and its reaction equation is as follows:

[0030] LiOH·H 2 O+2CsNO 3 +Y 2 o 3 +3(NH 4 ) 2 HPO 4 =LiCs 2 Y 2 (PO 4 ) 3 +6H 2 O↑+0.5O 2 ↑+6NH 3 ↑+2NO 2 ↑.

[0031] The specific operation steps are: Weigh LiOH·H 2 O 0.126g (0.003mol), CsNO 3 1.169 g (0.006 mol), Y 2 o 3 0.677 g (0.003 mol), (NH 4 ) 2 HPO 4 1.188 g (0.009 mol), put them into a mortar, mix and grind them evenly, then put them into a corundum ceramic crucible, compact them, put them in a muffle furnace, and raise the temperature to 500 °C at a rate of 50 °C / hour ℃, heat preservation and sintering for 24 hours, then lower to room temperature, take out, grind evenly, then raise the temperature to 900 ℃ at a rate of 50 ℃ / hour and sinter for 48 hours, take out and grind more than 1 time in the middle, that is, the pure phase LiCs 2 Y 2 (PO 4 ) 3 compound.

Embodiment 3

[0032] Example 3 LiCs 2 Y 2 (PO 4 ) 3 Crystal preparation

[0033] Prepare the LiCs by melt growth 2 Y 2 (PO 4 ) 3 Nonlinear optical crystal, it is the LiCs prepared by embodiment 1 or embodiment 2 2 Y 2 (PO 4 ) 3 Compound and Flux Li 2 O is mixed in a molar ratio of 0.1:1 and placed in a crystal growth furnace, kept at 700-1100°C for more than 2 hours to melt it into a melt, then measure the saturation temperature of the melt, and then cool the melt to a low temperature At the saturation temperature of 5 °C, the temperature was slowly lowered to 600 °C at 0.5 °C / day, and then rapidly lowered to room temperature to obtain the crystals.

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Abstract

The invention discloses a LiCs<2>Y<2> (PO<4>)<3> nonlinear optical crystal, a method for preparing the same and application of the LiCs<2>Y<2> (PO<4>)<3> nonlinear optical crystal. The method includessintering Li-containing compounds, Cs-containing compounds, Y-containing compounds and P-containing compounds to obtain LiCs<2>Y<2> (PO<4>)<3> powder; mixing and melting the obtained LiCs<2>Y<2> (PO<4>)<3> powder and fluxing agents with one another to obtain the LiCs<2>Y<2> (PO<4>)<3> nonlinear optical crystal. The LiCs<2>Y<2> (PO<4>)<3> nonlinear optical crystal, the method and the application have the advantages that the LiCs<2>Y<2> (PO<4>)<3> nonlinear optical crystal prepared by the aid of the method is transparent and is free of inclusion, high in growth speed and low in cost; the LiCs<2>Y<2> (PO<4>)<3> nonlinear optical crystal has short ultraviolet absorption cut-off edges, is stable in physical and chemical property, good in mechanical performance and easy to process and can be used for manufacturing laser blinding weapons and nonlinear optical devices for optical disk recording, laser projection television, optical computing, optical fiber communication and the like excellentnonlinear optical effects can be realized by the LiCs<2>Y<2> (PO<4>)<3> nonlinear optical crystal, and the like.

Description

technical field [0001] The present invention relates to a LiCs 2 Y 2 (PO 4 ) 3 Nonlinear optical crystal and its preparation method and its application in the preparation of nonlinear optical devices. Background technique [0002] The nonlinear optical effect of crystal means that when a beam of laser light with a certain polarization direction passes through a nonlinear optical crystal in a certain direction, the frequency of the beam will change. Crystals with nonlinear optical effects are called nonlinear optical crystals. 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, and all-solid-state lasers that use nonlinear optical crystals for frequency conversion are also future A development direction of lasers, but the key lies in obtaining excellent nonlinear optical crystals. [0003] At present, the nonlinear optical crystals ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/14C30B11/00G02F1/355
CPCC30B11/00C30B29/14G02F1/3551
Inventor 沈耀国李玉良贾俊荣
Owner MINJIANG UNIV
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