Non-linear optical crystal bismuth cadmium borate

A kind of nonlinear optics, bismuth cadmium borate technology, applied in the field of nonlinear optics materials and their synthesis, can solve the problem of no literature report, etc., and achieve the effect of excellent nonlinear optics performance

Active Publication Date: 2011-04-27
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

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Method used

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  • Non-linear optical crystal bismuth cadmium borate
  • Non-linear optical crystal bismuth cadmium borate
  • Non-linear optical crystal bismuth cadmium borate

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Embodiment 1

[0013] Preparation of embodiment 1 bismuth cadmium borate powder

[0014] According to the molar ratio of Cd:Bi:B is 4:1:3 ratio of CdO, Bi 2 o 3 with H 3 BO 3 Grind and mix evenly, put it into a Pt crucible, place it in a box-type resistance furnace, and react at 820°C for 24 hours to obtain a pure phase of light yellow powder with a yield of 100%.

Embodiment 2

[0015] The preparation of embodiment 2 bismuth cadmium borate single crystal

[0016] CdO, Bi 2 o 3 with H 3 BO 3 Grind, mix evenly, put it into a Pt crucible, put it into a box furnace at 300°C for pre-calcination, and grind it. Finally, keep the temperature at 900°C for 10 hours, then cool down to 600°C at a rate of 3°C per hour, and then drop to 300°C at a rate of 6°C per hour, and finally let it cool down to room temperature naturally, and a lot of light yellow transparent materials are obtained at the bottom of the crucible. flaky crystals. Single crystal X-ray diffraction crystallographic analysis has been carried out to this crystal and know that it is bismuth cadmium borate, and its crystallographic parameter is as above-mentioned, and structure is as attached figure 1 shown.

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Abstract

The invention provides an optical crystal bismuth cadmium borate compounded by three chromophores, and relates to the field of non-linear optical materials. The chemical formula of the bismuth cadmium borate is Cd3BiO(BO3)3, and the molecular weight is 851.05; the bismuth cadmium borate belongs to a monoclinic system, and the space group is Cm; the unit cell parameters are that: a is 8.044(2), b is 15.913(5), c is 3.4891(10) angstrom, alpha is 90.00 degrees, beta is 100.08(2) degrees, gamma is 90.00 degrees, V is 439.7(2) angstrom<3>, and Z is 2. The non-linear optical crystal bismuth cadmium borate is prepared by a high-temperature solid state method. The bismuth cadmium borate has excellent non-linear optical performance, and the second harmonic generation (SHG) coefficient of the bismuth cadmium borate powder is six times that of potassium dihydrogen phosphate (KDP).

Description

technical field [0001] The invention belongs to nonlinear optical material and its synthesis. Background technique [0002] Nonlinear optical crystals, with frequency doubling effect (SHG), have important application value in high-tech fields such as laser frequency conversion, electro-optical modulation, photorefractive information processing, and nonlinear optical imaging. Nonlinear optical materials are used in modern science and technology, especially in several military and civilian high-tech fields, such as submarine deep-water communication, laser blinding weapons, marine fish detection, optical disc recording, color laser printing, laser projection TV, optical computing and Optical fiber communication, etc., have a series of important applications. The nonlinear optical crystals currently used in practice include LiB 3 o 5 (LBO), β-BaB 2 o 4 (BBO), KH 2 PO 4 (KDP), KTiOPO 4 (KTP), LiNbO 3 (LNO) and BaTiO 3 (BTO) and so on. Recent studies have shown that bi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B1/00G02F1/355
Inventor 程文旦张炜龙
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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