Nonlinear optical crystal rubidium beryllium borate

A nonlinear optics, beryllium borate technology, applied in nonlinear optics, optics, crystal growth and other directions, can solve the problems of poor optical uniformity, inability to apply, poor structural integrity, etc., and achieve the effect of good chemical stability

Active Publication Date: 2015-03-04
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They overcome the layered habit of KBBF and RBBF single crystal growth, but these crystals have not been able to replace the above-mentioned single crystals so far, because the structural integrity of SBBO and TBO crystals is not good, and their macroscopic properties show very poor optical uniformity, It is not yet possible to be applied in practical devices

Method used

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  • Nonlinear optical crystal rubidium beryllium borate
  • Nonlinear optical crystal rubidium beryllium borate
  • Nonlinear optical crystal rubidium beryllium borate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Synthesis of compound RbBe by high temperature solid phase reaction 2 B 3 O 7

[0033] Raw material used: Rb 2 CO 3 Analytical pure AR 2.3097g (0.01mol)

[0034] BeO analytical pure AR 1.0004g (0.04mol)

[0035] B 2 O 3 Analytical pure AR 2.0886g (0.03mol)

[0036] The chemical reaction equation is:

[0037] Rb 2 CO 3 +4BeO+3B 2 O 3 = 2RbBe 2 B 3 O 7 +CO 2 ↑

[0038] The specific operation steps are as follows: After weighing the above-mentioned raw materials in the operation box according to the above-mentioned dosage, put them in a mortar and mix them evenly and carefully grind them, and then put them into a platinum crucible of Φ30×30mm, press them tightly with a medicine spoon and cover them. , Put it in the muffle furnace (the muffle furnace is placed in a fume hood, and the exhaust port of the fume hood is exhausted through the water tank), slowly increase the temperature to 450 ℃ and pre-burn at a constant temperature for 3 hours, the heating rate must be slow at the beg...

Embodiment 2

[0040] Synthesis of compound RbBe by high temperature solid phase reaction 2 B 3 O 7

[0041] Raw material used: Rb 2 CO 3 Analytical pure AR 2.3097g (0.01mol)

[0042] BeO analytical pure AR 1.0004g (0.04mol)

[0043] H 3 BO 3 Analytical pure AR 3.7098g (0.06mol)

[0044] The chemical reaction equation is:

[0045] Rb 2 CO 3 +4BeO+6H 3 BO 3 = 2RbBe 2 B 3 O 7 +CO 2 ↑+9H 2 O↑

[0046] The specific operation steps are as follows: After weighing the above-mentioned raw materials in the operation box according to the above-mentioned dosage, put them in a mortar and mix them evenly and carefully grind them, and then put them into a platinum crucible of Φ30×30mm, press them tightly with a medicine spoon and cover them. , Put it in the muffle furnace (the muffle furnace is placed in a fume hood, and the exhaust port of the fume hood is exhausted through the water tank), slowly increase the temperature to 450 ℃ and pre-burn at a constant temperature for 3 hours, the heating rate must be slow ...

Embodiment 3

[0048] Using molten salt method to grow RbBe crystals 2 B 3 O 7

[0049] The crystal growth device is a self-made resistance wire heating furnace, and the temperature control equipment is a 908PHK20 programmable automatic temperature controller. Choose Rb 2 O-B 2 O 3 As a flux, spontaneous nucleation to obtain crystals.

[0050] Raw material used: Rb 2 CO 3 Analytical pure AR 46.194g (0.2mol)

[0051] BeO analytical grade AR 4.0018g (0.16mol)

[0052] B 2 O 3 Analytical pure AR 41.772g (0.6mol)

[0053] The specific operation steps are as follows: After weighing the above-mentioned raw materials according to the above-mentioned dosage, mix them evenly, then put them into a platinum crucible of Φ60×60mm, put them in a self-made growth furnace, raise the temperature at 1000℃ until the raw materials are completely melted, and after 10 hours of constant temperature, The temperature is quickly reduced to 5-10°C above the saturation temperature, and then the temperature is lowered to 600°...

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Abstract

The invention provides novel nonlinear optical crystal rubidium beryllium borate, and the chemical formula is RbBe2B3O7, RBB for short. The crystal structure belongs to an orthorhombic crystal system, the space group is Pmn21, the cell parameter a is equal to 7.687 Angstroms, the cell parameter b is equal to 17.724 Angstroms, the cell parameter c is equal to 4.393 Angstroms, alpha equals beta equals gamma equals 90 degrees, Z equals 4 and the unit cell volume V is equal to 598.5 cubic Angstroms. A RBB compound can be obtained by adopting the solid-phase synthesis method for sintering at high temperature. A single crystal can be successfully grown out by adopting Rb2O-B2O3 or Rb2O-B2O3-MF (M equals to Li or Na) as a fluxing agent through the molten salt method. The second harmonic generation of the RbBe2B3O7 is 0.37 time that of LiB3O5 (LBO), the ultraviolet absorption edge of the RbBe2B3O7 is shorter than 190nm, the RbBe2B3O7 is insoluble in dilute acid, the chemical stability is good, the RbBe2B3O7 can be widely applied in various nonlinear optical fields and nonlinear optical applications of deep ultraviolet wave band can be developed.

Description

Technical field [0001] The present invention relates to a new type of optoelectronic functional material and its growth method and application, in particular to a nonlinear optical crystal material and its preparation method and application, namely rubidium beryllium borate, its chemical formula is RbBe 2 B 3 O 7 , Referred to as RBB. Background technique [0002] The nonlinear optical effect of the crystal refers to such an effect: when a laser beam with a certain polarization direction passes through a nonlinear optical crystal (such as RBB) in a certain incident direction, the frequency of the beam will change. [0003] Crystals with nonlinear optical effects are called nonlinear optical crystals. The use of nonlinear optical crystals for laser frequency conversion broadens the range of laser wavelengths and makes laser applications more extensive. Especially borate-based nonlinear optical crystals such as BaB 2 O 4 (BBO), LiB 3 O 5 (LBO), KBe 2 BO 3 F 2 (KBBF), RbBe 2 BO 3 F 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/355G02F1/39C30B29/22C30B9/12
Inventor 叶宁王时超
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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