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Multiphoton Laser Materials
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A laser material and multi-photon technology, applied in the field of push-pull electronic organic multi-photon laser dyes, can solve the problems of discovering and not yet having 5-photon laser materials, etc.
Active Publication Date: 2017-04-05
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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At present, there are many reports on two-photon laser materials, and there are also a few reports on 3-photon and 4-photon laser materials, but there is no discovery of 5-photon laser materials.
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[0019] Add 4-picoline (0.01mol), 1,3-propane sultone (0.01mol) and 50 mL of acetone into a 100 mL round-bottomed flask, heat to reflux for 12 hours, and precipitate a solid after cooling, vacuum filter under reduced pressure 2.1 g of white solid were obtained, yield 91%. l HNMR (DMSO-d 6 , 300 MHz, ppm): 7.98 (d, 2H, J=6.3 Hz), 7.05 (d, 2H, J=6.3 Hz),3.68 (t, 2H, J=6.9 Hz), 2.83 (t, 2H, J =6.0 Hz), 1.68 (s, 3H), 1.25 (m, 2H, J=6.9 Hz).
preparation example 2
[0020] Preparation 2: (E)-3-(4-(2-(1-hexyl-4-methyl-1H-5-imidazolyl)vinyl)-1pyridyl)propanesulfonic acid inner salt IPPS
[0021] The 4-methyl-N-(3-propanesulfonic acid group)-pyridine inner salt (0.01 mol) obtained in the previous step reaction and 1 equivalent of 1-hexyl-4-methyl-1H-imidazole-5- Add aldehyde and piperidine (2-3 drops) into a 100 mL round bottom flask, add 25 mL of ethanol, and heat to reflux for 12 hours. After cooling, it was vacuum filtered and recrystallized in DMF to obtain the product with a yield of 63%. 1 H NMR (400MHz, DMSO-d 6 ), δ 8.76 (d, J=6.8 Hz, 2H), 8.18 (d, J=6.8 Hz, 2H), 7.97 (d, J=15.6 Hz, 1H), 7.75 (s, 1H), 7.18 (d, J=15.6 Hz, 1H), 4.50 (t, J=6.8 Hz, 2H), 3.92 (t, J=7.6 Hz, 2H), 3.75 (t, J=6.0 Hz, 2H), 2.40 (s, 3H) , 2.17-2.14 (m,2H), 1.68-1.65 (m, 2H), 1.27-1.25 (m, 6H), 0.86 (t, J=6.8 Hz, 3H). HRMS (m / z): [M+ H] + Calcd. for C 20 h 30 N 3 o 4 S, 408.19515; found, 408.19453
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Abstract
The invention provides a multiphoton laser material which has the structural formula shown in the specification, wherein X=N, C, R1 is H atom, C1-C28 alkyl, C1-C20 aryl and aryl substituted by alky with less than 20 carbon atoms, and R2 is C1-C28 alkyl, C1-C20 aryl and acryl C1-C28 fluorinated alkyl substituted by alky with less than 20 carbon atoms. According to the material, laserwavelength from infrared (800nm-2200n) to visible (500nm) can be converted in frequency. The conversion efficiency of the laser frequency based on three photon absorption reaches 10.4% by using the material, and meanwhile, five-photon laser can be realized.
Description
technical field [0001] The invention relates to a material for frequency up-conversion laser, especially a push-pull electronic organic multiphoton laser dye. Background technique [0002] As a nonlinear optical phenomenon, multiphoton absorption is a process in which a medium absorbs two (three or more) photons at the same time under strong light excitation, and transitions from the ground state to the excited state. If the number of photons absorbed at the same time is 2, it is called two-photon absorption (third-order nonlinear effect). If the number of photons absorbed at the same time is 3, it is called three-photon absorption (fifth-order nonlinear effect). Let us take two-photon absorption as an example. The degree of two-photon absorption at a given position in a medium is proportional to the product of the square of the incident local light intensity and the two-photon absorption coefficient of the medium. Here, the two-photon absorption coefficient of the medium ...
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Patent Type & Authority Patents(China)
IPC IPC(8): C07D401/06C09K11/06H01S3/213
Inventor 郑庆东
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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