Middle-infrared nonlinear optical crystal material KBi4F13, and preparation method and application thereof
A technology of nonlinear optics and crystal materials, applied in the growth of polycrystalline materials, chemical instruments and methods, crystal growth, etc., can solve the problems that the research of new frequency conversion crystals needs to be strengthened, and achieve high laser damage threshold and thermal stability, The effect of high product purity and simple operation
Inactive Publication Date: 2015-10-07
WUHAN UNIV
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Problems solved by technology
In the book "Nonlinear Optical Crystal Materials Science" published by Science Press in 2003, it was clearly stated that "in the entire spectral band of nonlinear optics, nonlinear optical crystals in the infrared band are a weak link. Therefore, in this band Research on new frequency conversion crystals needs to be strengthened”
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Embodiment 1
[0027] KF (0.1162g, 2mmol) and Bi 2 o 3 (0.4660g, 1mmol) was added into a hydrothermal reaction kettle with a capacity of 23mL, and 3ml of HF solution with a mass fraction of 40% was added. After sealing, put the reaction kettle into the muffle furnace, heat it to 230°C after 3 hours, react at constant temperature for 3 days, and cool down for 1 day. After the reaction, wash the product with distilled water, filter it with suction and dry it to obtain small colorless block crystals. It is a mid-infrared nonlinear optical crystal material.
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Abstract
The invention discloses a middle-infrared nonlinear optical crystal material. The chemical formula of the crystal material is KBi4F13, the crystal space group of the material is I-4, and cell parameters are characterized in that a is 0.92027(19)nm, b is 0.92027(19)nm, c is 0.62589(13)nm, alpha = beta = gamma = 90DEG, and Z is 2. The invention also provides a hydrothermal preparation method of the crystal material. The middle-infrared nonlinear optical crystal material prepared in the invention has a phase matching second harmonic generation (SHG) effect, and a Kurtz powder frequency multiplication test result shows that the powder frequency multiplication effect of the crystal material is same to that of potassium dihydrogen phosphate (KDP); the laser damage threshold of the powder is 120MW / cm<2>, and is above 23 times the laser damage threshold of present commercial middle-infrared nonlinear optical crystal materials AgGaS2; the middle-infrared nonlinear optical crystal material has a wide permeable range in visible light region and middle-infrared light region; the middle-infrared nonlinear optical crystal material has the advantages of no crystal water, stability to air, and good heat stability; and monocrystalline materials can be prepared through the hydrothermal method.
Description
technical field [0001] The invention belongs to the field of inorganic chemistry, and in particular relates to a mid-infrared nonlinear optical crystal material and its preparation method and application. Background technique [0002] Nonlinear optical effects originate from the interaction between laser and medium. When the laser propagates in a medium with non-zero second-order polarizability, nonlinear optical effects such as frequency doubling, sum frequency, difference frequency, and optical parametric amplification will occur. Using the second-order nonlinear optical effect of crystals, nonlinear optical devices such as second harmonic generators, frequency converters, and optical parametric oscillators can be made. In many fields, such as laser technology, atmospheric monitoring, national defense and military, etc., All have important application value. Inorganic nonlinear optical materials play a dominant role in the practical research of second-order nonlinear opt...
Claims
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Login to View More IPC IPC(8): C30B29/12C30B7/10
Inventor 吴奇秦金贵
Owner WUHAN UNIV
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