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Preparation method and application of NaZnCO3(OH) compound and crystal thereof
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A compound and crystal technology, applied in the field of functional crystal materials, can solve the problems such as hindering the efficient synthesis of high-performance nonlinear optical crystals, affecting the conversion efficiency and beam quality, and being difficult to arrange coplanarly and uniformly, achieving a wide light transmission range and cost. Low, simple process effect
Active Publication Date: 2022-01-25
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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However, these crystals have more or less disadvantages: for example, BBO has a walk-off effect due to the large birefringence (the birefringence at 532nm is 0.12), which affects the conversion efficiency and beam quality; LBO, CBO and CLBO have a large birefringence Small (the birefringence at 532nm is 0.04, 0.06 and 0.05 respectively) leads to the blue shift of the shortest phase matchingwavelength to 277nm, 273nm and 236nm; in addition, CLBO also has the problem of moisture absorption and cracking
However, since B and O will also form (BO 4 ) 5- and other groups, and the connection mode between the groups is too flexible and changeable, it is often difficult to effectively obtain the desired coplanar and consistent arrangement (BO 3 ) 3- group, which seriously hinders the efficient synthesis of high-performance nonlinear optical crystals
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Embodiment 1
[0044] NaZnCO 3 Preparation of (OH) crystals
[0045] NaZnCO was prepared by the following steps 3 (OH) crystals:
[0046] (a) ZnF 2 (0.01mol, 1.034g), Na 2 CO 3 (0.05mol, 5.299g), NH 4 Cl (0.05mol, 2.675g) and H 2 O (10mL) was placed in a reaction kettle with a polytetrafluoroethylene liner, heated to 220°C at a rate of 20°C / hour, and crystallized at a constant temperature for 5 days;
[0050] NaZnCO was prepared by the following steps 3 (OH) crystals:
[0051] (a) ZnF 2 (0.1mol, 10.34g), Na 2 CO 3 (0.5mol, 52.99g), NH 4 Cl (0.5mol, 26.75g) and H 2 O (100mL) was placed in a reaction kettle with a polytetrafluoroethylene liner, heated to 220°C at a rate of 15°C / hour, and crystallized at a constant temperature for 10 days;
[0055] NaZnCO was prepared by the following steps 3 (OH) crystals:
[0056] (a) ZnF 2 4H 2 O (0.01mol, 1.755g), Na 2 CO 3 (0.05mol, 5.299g), NH 4 Cl (0.04mol, 2.140g) and H 2 O (10mL) was placed in a reaction kettle with a polytetrafluoroethylene liner, heated to 200°C at a rate of 20°C / hour, and crystallized at a constant temperature for 4 days;
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Abstract
The invention discloses a novel NaZnCO3(OH) compound as well as a crystal, a preparation method and application thereof. The crystal belongs to a monoclinic system, the space group is Pc, and the cell parameters are as follows: a = 3.3772-3.3827, b = 5.4530-5.4599, c = 9.2391-9.2505, alpha = gamma = 90 degrees, beta = 96.876-96.945 degrees and z = 2. The crystal has a large nonlinear optical effect and a short phase matchingcut-off wavelength, the powder frequency-doubled effect of the crystal is 5.2 times of that of KH2PO4 (KDP), and the shortest phase matchingwavelength of the crystal can reach 201 nm. The crystal has the advantages of easy growth, compact structure, stable chemical properties, no deliquescence in air, good physical and mechanical properties and the like, and can be applied to the fields of nonlinear optics, laser technology, electro-optical modulation, photorefractive information processing and the like.
Description
technical field [0001] The invention belongs to the field of functional crystal materials, in particular to a NaZnCO 3 (OH) compounds and their crystals, methods of preparation and uses in nonlinear optics. Background technique [0002] Nonlinear optical crystals are a class of new functional materials widely used in the field of optoelectronic technology. Especially as the core device of all solid-state lasers in the ultraviolet band, the ultravioletlaser output by its frequency conversion function has important applications in frontier scientific research, laser microprocessing, information storage and other fields. At present, the ultravioletnonlinear optical crystals that have been commercialized mainly include β-BaB 2 o 4 (abbreviated as BBO), LiB 3 o 5 (abbreviated as LBO), CsB 3 o 5 (abbreviated as CBO) and CsLiB 6 o 10 (abbreviated as CLBO) and so on. However, these crystals have more or less disadvantages: for example, BBO has a walk-off effect due to th...
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