Nonlinear optical crystal material Sr3Y3BiB4O15 and preparation method and application thereof

A nonlinear optics and crystal technology, applied in the growth of nonlinear optical crystal Sr3Y3BiB4O15 and its flux crystal, rare earth-doped Sr3Y3BiB4O15 crystal and its flux crystal growth, can solve the problems of low laser efficiency and small nonlinear effect

Inactive Publication Date: 2011-05-25
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of these types of crystals is mainly that the nonl

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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IPC IPC(8): C30B29/22C30B9/12
Inventor 高建华宋立美万云
Owner NORTHWEST UNIV
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