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Nonlinear optical crystal material Sr3Y3BiB4O15 and preparation method and application thereof

A technique of nonlinear optics, crystals

Inactive Publication Date: 2012-06-20
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of these types of crystals is mainly that the nonlinear effect is small, which makes the obtained laser efficiency low

Method used

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  • Nonlinear optical crystal material Sr3Y3BiB4O15 and preparation method and application thereof
  • Nonlinear optical crystal material Sr3Y3BiB4O15 and preparation method and application thereof
  • Nonlinear optical crystal material Sr3Y3BiB4O15 and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] SrCO in molar ratio 3 :Y 2 o 3 : Bi 2 o 3 :H 3 BO 3 =6:3:1:8 Weigh the following reagents:

[0045] SrCO 3 : 8.8578 g, Y 2 o 3 : 6.7743 g, Bi 2 o 3 : 4.6596 g, H 3 BO 3 : 4.9464 grams.

[0046] Grind the weighed reagent evenly in an agate grinding machine, then transfer it to a Pt crucible, put it into a muffle furnace, and sinter it at 500°C for 4 hours, take it out and cool it, grind it well, then put it into the muffle furnace, the temperature Sinter at 800°C for 10 hours, take it out and cool it down and grind it thoroughly, then put it into the muffle furnace, raise the temperature to 900°C for sintering for 24 hours, take it out and cool it, grind it well, then put it in the muffle furnace, at 900°C After sintering for 24 hours, Sr 3 Y 3 BiB 4 o 15 Polycrystalline powder samples.

Embodiment 2

[0048] SrCO in molar ratio 3 :Y 2 o 3 : Bi 2 o 3 :H 3 BO 3 =6:3:1:8 Weigh the following reagents:

[0049] SrCO 3 : 2.2145 g, Y 2 o 3 : 1.6936 g, Bi 2 o 3 : 1.1649 g, H 3 BO 3 : 1.237 g.

[0050] Put the weighed reagent in a clean beaker, add a certain amount of 1mol / L nitric acid solution, heat and stir on a magnetic stirrer, dissolve into a transparent solution, add a certain amount of citric acid, and wait until it dissolves into a transparent solution. Heat slowly on an electric stove and gradually evaporate the water. Then the solid content in the beaker was transferred to a Pt crucible, placed in a muffle furnace to burn at 800°C, and then sintered at 900°C for 24 hours. High-purity Sr can be obtained 3 Y 3 BiB 4 o 15 Polycrystalline powder samples.

Embodiment 3

[0053] SrCO in molar ratio 3 : Y 2 o 3 : Nd 2 o 3 : Bi 2 o 3 :H 3 BO 3 =6:3:(1- x ): x : 8 (0 x <0.5) Weigh the following reagents:

[0054] SrCO 3 : 2.2145 g, Y 2 o 3 : 1.5807 g, Nd 2 o 3 : 0.1683 g ( x =0.0005mol), Bi 2 o 3 : 1.1649 g, H 3 BO 3 : 1.237 g.

[0055] Grind the weighed reagent evenly in an agate grinding machine, then transfer it to a Pt crucible, put it into a muffle furnace, and sinter it at 500°C for 4 hours, take it out and cool it, grind it well, then put it into the muffle furnace, the temperature Sinter at 800°C for 10 hours, take it out and cool it down and grind it thoroughly, then put it into the muffle furnace, raise the temperature to 900°C for sintering for 24 hours, take it out and cool it, grind it well, then put it in the muffle furnace, at 900°C Then sinter for 24 hours to get Nd 3+ :Sr 3 Y 3 BiB 4 o 15 Polycrystalline powder samples.

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Abstract

The invention discloses a nonlinear optical crystal material Sr3Y3BiB4O15 and a preparation method and application thereof. The crystal material is bismuth yttrium strontium borate shown as the chemical formula of Sr3Y3BiB4O15, belongs to a hexagonal system, and has the space group of P63 and the unit cell parameters of a=10.6975(13)A and c=6.7222(12)A. A crystal structure comprises BO3 radicals which are arranged in accordant direction and a BiO3 radical with lone pair electrons which are arranged in accordant direction, so that nonlinear effect is 3 to 5 times that of KH2PO4. A crystal has moderate hardness, is free from being deliquesced or cleaved, and is easy to cut, polish and store. The crystal grows by a flux growth method. The preparation method comprises the following steps of: mixing bismuth yttrium strontium borate and a fluxing agent; heating the mixture to obtain solution; stirring; preserving heat; cooling until the temperature is 0.5 to 3 DEG C above a saturation point; adding crystal seeds; controlling an appropriate temperature lowering speed; when the crystal grows to a certain degree, extracting the crystal out of a liquid surface; and slowly lowering the temperature to room temperature so as to obtain Sr3Y3BiB4O15 monocrystal. The crystal can serve as a frequency doubling crystal in an optical parametric oscillator and a harmonic generator. Moreover, the crystal comprises a yttrium element, so that other rare earth ions can be doped so as to obtain a self-frequency-doubling laser crystal.

Description

technical field [0001] The invention relates to the field of optoelectronic functional materials, in particular to a nonlinear optical crystal Sr 3 Y 3 BiB 4 o 15 Flux crystal growth method and use thereof, and rare earth doped Sr 3 Y 3 BiB 4 o 15 Crystal and flux crystal growth method and use thereof. Background technique [0002] In recent years, with the rapid development of laser technology, it has been widely used in many fields such as optics, communication, medicine, and military affairs. In particular, all-solid-state lasers have attracted people's attention because of their small size, low price, and simple structure. All solid-state lasers are generally produced by laser diode pumped laser crystals, such as direct pumping Nd:YAG can produce 1064nm laser. Pumping laser crystals generally can only produce infrared lasers, but not short-wavelength lasers. To produce shorter-wavelength lasers, nonlinear optical crystals must be used for frequency doubling, freq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/22C30B9/12
Inventor 高建华宋立美万云
Owner NORTHWEST UNIV
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