Non-linear optic crystal potassium borate niobate, preparation method and use thereof
A technology of nonlinear optics and potassium niobate, applied in the field of optoelectronic materials, can solve problems such as nonlinear optical crystals that have not yet been obtained
Inactive Publication Date: 2007-07-11
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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[0003] After decades of efforts by scientists from various countries, many nonlinear optical crystals have been discovered, and some nonlinear optical crystals have been applied in practice, such as: KDP, KTP, LBO, BBO, LiNbO 3 However, due to various reasons, nonlinear optical crystals applicable to all wave bands have not yet been obtained, so scientists from all over the world are still paying close attention to the exploration and research of various new nonlinear optical crystals
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[0014] The growth material is KNbB 2 o 6 :(K 2 MoO 4 -KF)=75:25 (mole ratio). Using molten salt top seed crystal method, at φ65×50mm 3 In the platinum crucible, add growth raw materials, raise the temperature to 1200°C, keep the temperature for 20 hours, cool down to 1130°C, grow with 1.3×1.5×8mm seed crystals, and the cooling rate is 0.5°C / day for the first week, and 0.5°C / day for the second, 1°C / day for three weeks, 2°C / day thereafter, the crystal transformation is 20 rpm, after 45 days of growth, the obtained size is 25×28×20mm 3 The better optical quality of KNbB 2 o 6 crystals.
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The invention discloses a non-linear optical crystal potassium borate-niobate and making method and application in the artificial crystal domain, which is characterized by the following: adopting K2MoO4-LiF as flux; growing KNbB2O6 crystal in the 1150-100 deg. c interval through top seeding method of fusing salt with cooling velocity at 1-5deg. c/d and rotary speed of crystal at 5-35rpm; improving the physical, chemical and mechanic property for frequency laser crystal of visible and near infrared band.
Description
technical field [0001] The invention belongs to the technical field of optoelectronic materials, in particular to a nonlinear optical crystal used as a laser. Background technique [0002] Nonlinear optical crystal material is a kind of crystal material widely used in laser technology. It is mainly used to convert the frequency of laser wavelength and expand the tunable frequency range of laser. At present, frequency doubling, difference frequency, sum frequency and other technologies are widely used. It usually uses a special nonlinear optical crystal placed in front of the laser beam to change the output wavelength of the laser beam. [0003] After decades of efforts by scientists from various countries, many nonlinear optical crystals have been discovered, and some nonlinear optical crystals have been applied in practice, such as: KDP, KTP, LBO, BBO, LiNbO 3 However, due to various reasons, no nonlinear optical crystals applicable to all wavelength bands have been obtain...
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IPC IPC(8): C30B29/22C30B9/12
Inventor 王国富林州斌张莉珍
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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