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Cesium fluoroboroaluminate compound, cesium fluoroboroaluminate nonlinear optical crystal, preparation method and use thereof

A technology of nonlinear optics and cesium fluoroboroaluminate, which is applied in the field of optoelectronic functional materials, can solve the problems of unsatisfactory comprehensive performance of nonlinear optical crystals, and achieve crystal layered growth habit, good thermal stability, and excellent optics. performance effect

Active Publication Date: 2021-04-20
HEBEI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a cesium fluoroboroaluminate compound, a cesium fluoroboroaluminate nonlinear optical crystal and its preparation method and application, so as to solve the problem that the comprehensive performance of the existing nonlinear optical crystal is not ideal

Method used

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  • Cesium fluoroboroaluminate compound, cesium fluoroboroaluminate nonlinear optical crystal, preparation method and use thereof
  • Cesium fluoroboroaluminate compound, cesium fluoroboroaluminate nonlinear optical crystal, preparation method and use thereof
  • Cesium fluoroboroaluminate compound, cesium fluoroboroaluminate nonlinear optical crystal, preparation method and use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Preparation of cesium fluoroboroaluminate compound:

[0034] According to the reaction formula: 2CsF + Al 2 o 3 + 3B 2 o 3 = 2CsAlB 3 o 6 F, Synthetic compound CsAlB 3 o 6 The dosage of reagent used in F is:

[0035] CsF 3.038g (0.02mol)

[0036] al 2 o 3 1.020g (0.01mol)

[0037] B 2 o 3 2.089g (0.03mol)

[0038] The specific operation steps are as follows:

[0039] Accurately weigh the raw materials according to the above mass, put them into an agate mortar, mix them evenly and grind them carefully, then put them into a corundum crucible of φ60mm×60mm, compact them, and put them into a muffle furnace to raise the temperature at a rate of 50 ℃ / hour To 400 ℃, constant temperature for 3 hours. Then take it out after cooling to room temperature, grind it fully again, compact it and put it into a muffle furnace, raise the temperature to 600 °C at a heating rate of 200 °C / hour and burn for 24 hours. Repeat the previous step twice, and after calcining at...

Embodiment 2

[0041] Preparation of cesium fluoroboroaluminate compound:

[0042] According to the reaction formula: 2CsF+ 2Al(OH) 3 +3B 2 o 3 = 2CsAlB 3 o 6 F+3H 2 O, synthetic compound CsAlB 3 o 6 The dosage of reagent used in F is:

[0043] CsF 3.038g (0.02mol)

[0044] Al(OH) 3 1.560g (0.02mol)

[0045] B 2 o 3 2.089g (0.03mol)

[0046] The specific operation steps are as follows:

[0047] Accurately weigh the raw materials according to the above mass, put them into an agate mortar, mix them evenly and grind them carefully, then put them into a platinum crucible of φ40mm×40mm, compact them, and put them into a muffle furnace at a heating rate of 50°C / hour Raise the temperature to 500°C and keep the temperature constant for 3 hours. Then take it out after cooling to room temperature, grind it fully again and put it into a muffle furnace, raise the temperature to 650°C at a rate of 100°C / hour and burn for 96 hours to obtain the compound CsAlB 3 o 6 F. Reaction product...

Embodiment 3

[0049] Growth of CsAlB by pulling method 3 o 6 F nonlinear optical crystal:

[0050] Put the prepared cesium fluoroboroaluminate polycrystalline powder (as described in Example 1) into a φ40 mm × 60 mm platinum crucible, place it in a crystal furnace, and raise the temperature to 800 °C at a heating rate of 300 °C / hour , keep the temperature for 10 hours, until the raw materials are completely melted and uniform, then quickly cool down to 1 ℃ above the freezing point (about 561 ℃). Then fix the seed crystal on the lower end of the seed rod to contact with the liquid surface of the melt, overheat for 10 minutes and then cool down to the freezing point or 1°C (559°C) below the freezing point to start crystal growth. A crystal rotation of 10 rpm was applied by a crystal growth controller, the seed crystal was pulled at a rate of 5 mm / day, and then the temperature was slowly lowered at a rate of 1 °C / day. After the crystal growth was completed, the crystal was lifted from the l...

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Abstract

The invention provides a cesium fluoroboroaluminate compound, cesium fluoroboroaluminate nonlinear optical crystal and its preparation method and application, the chemical formula of the crystal is CsAlB 3 o 6 F, the molecular weight is 307.32, the structure of the crystal belongs to the orthorhombic system, and the space group is Pna 2 1 , the cell parameters are a =8.064Å, b =11.970Å, c =7.036Å, α = β = gamma =90°, the unit cell volume is 679.2Å 3 . The crystals can be grown by a pulling method or a high-temperature solution method. The crystal of the present invention has a strong nonlinear optical effect, and its ultraviolet cut-off edge is shorter than 180 nm, and can be used for 2 times, 3 times, 4 times and 5 times of Nd:YAG (λ=1064 nm) lasers frequency and even 6x harmonic generators, even for generating harmonic light output shorter than 200 nm.

Description

technical field [0001] The invention relates to the technical field of optoelectronic functional materials, in particular to a cesium fluoroboroaluminate compound, a cesium fluoroboroaluminate nonlinear optical crystal, a preparation method and an application thereof. Background technique [0002] The nonlinear optical effect of crystal refers to such an effect: when a beam of laser light with a certain polarization direction passes through a nonlinear optical crystal according to a certain incident direction, the frequency of the beam will change. figure 1 It is a typical schematic diagram based on the application of this effect in lasers. [0003] Crystals with nonlinear optical effects are called nonlinear optical crystals. The nonlinear effect referred to here especially involves the second-order nonlinear optical effect (the same below), and only crystals without a center of symmetry may have this effect. Using this effect, crystal devices can be assembled into nonlin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/10C30B15/00C30B17/00C30B11/00G02F1/355
CPCC30B11/00C30B15/00C30B17/00C30B29/10G02F1/3551
Inventor 王颖刘红坤
Owner HEBEI UNIVERSITY
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