scholarly journals Electro-Optic Modulation of Higher-Order Poincaré Beam Based on Nonlinear Optical Crystal

Photonics ◽  
2022 ◽  
Vol 9 (1) ◽  
pp. 41
Author(s):  
Lu Han ◽  
Zhan Li ◽  
Chao Chen ◽  
Xin Sun ◽  
Junyong Zhang ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Polarization State ◽  
Optical Element ◽  
Higher Order ◽  
Nonlinear Optical Crystal ◽  
Nonlinear Optical Crystals ◽  
Spatially Inhomogeneous ◽  
Electro Optic ◽  
Voltage Signal ◽  
Polarization States

Vector beams (VBs) have spatially inhomogeneous polarization states distribution and have been widely used in many fields. In this paper, we proposed a method to modulate polarization states of higher-order Poincaré (HOP) beams and designed a system based on Mach-Zehnder interferometers, in which polarization state (include azimuth and ellipticity) of generated HOP beams were modulated by linear electro-optic (EO) effect of nonlinear optical crystals. Using this method, the polarization state of generated HOP beams could be controlled by voltage signal applied on EO crystals, which makes the process of the polarization state change with no optical element moving and mechanical vibrations. Besides, due to the flexibility of the voltage signal, the polarization state could be switched directly and immediately.

Investigation of Some New Nonlinear Optical Crystals by Means of NQR, IR and X-Ray Diffraction Methods

1998 ◽  
Vol 53 (6-7) ◽  
pp. 528-536 ◽  
Author(s):  
A. M. Petrosyan ◽  
S. S. Terzyan ◽  
V. M. Burbelo ◽  
R. P. Sukiasyan
Keyword(s):  
Nonlinear Optical ◽  
Nonlinear Optical Crystal ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nonlinear Optical Crystals ◽  
Optical Crystals ◽  
Optical Crystal

Abstract Some new analogues of the nonlinear optical crystal L-arginine phosphate monohydrate (LAP) (Arg • HIO3 , Arg • 2HIO3 , Lys • HIO3 , Lys • 2HIO3 , Lys • 3HIO3 , Bet • 3HIO3) were obtained and investigated by means of IR, NQR, X-ray diffraction and SHG methods. The importance of this class of crystals for revealing new nonlinear optical crystals is pointed out.

Waterproof coating on nonlinear optical crystal surfaces by photo–oxidation of silicone oil

2005 ◽  
Vol 890 ◽  
Author(s):  
Nobuhiro Sato ◽  
Yuji Sato ◽  
Yoshiaki Okamoto ◽  
Masataka Murahara
Keyword(s):  
Nonlinear Optical ◽  
Silicone Oil ◽  
Crystal Surface ◽  
Protective Film ◽  
Nonlinear Optical Crystal ◽  
Kdp Crystal ◽  
Excimer Lamp ◽  
Photo Oxidation ◽  
Nonlinear Optical Crystals ◽  
Optical Crystals

ABSTRACTOrganic silicone oil was photo–chemically oxidized to change into SiO2 by using a ultraviolet (UV) excimer lamp, which developed an over–coating for a nonlinear optical crystal.In general, nonlinear optical crystals are used as a wavelength conversion element for laser. The crystals are, however, deliquescent and absorb moisture in the air, which causes clouding. They need heating in the oven to prevent it. It is desired to develop a protective film on the nonlinear optical crystals so as to be waterproof and transmit UV rays. We have, then, developed the waterproof and protective film on a KH2PO4 (KDP) surface, which was photo–chemically oxidized by using a silicone oil and Xe2 excimer lamp. The silicone oil was spin–coated on the KDP crystal surface, and then the Xe2 excimer lamp was vertically irradiated to the crystal surface. The O atoms in the air were photo–excited with the UV photon to generate high active O atoms. At the same time, the C—H and the Si—C bonds of the silicone oil were photo–dissociated because the photon energy of the UV photon is higher than the bonding energies of the C—H and Si—C. The siloxane of the silicone oil was consequently linked with the O2 that had been absorbed on the crystal surface to form SiOn. As a result, the SiO2 film was formed on the KDP crystal surface by the photo–oxidation of silicone oil.The infrared spectroscopy analysis (ATR-FTIR) was carried out to investigate the modified film. The results showed that as the time of lamp irradiation extended, the absorption peak of the —CH3 groups at 2900 cm−1 decreased, but the absorption peak of the —SiO groups at 1050cm−1 increased. At the lamp irradiation time of 90 minutes, the UV transmittance of the treated silicone oil improved to 88.9 % at the 260 nm, which is the wavelength of the fourth harmonic generation, while that of the untreated silicone oil was 56 %.The treated and untreated KDP crystals were tested for their waterproofing. The untreated crystal was completely dissolved thirty minutes after soaking in the water, and on the contrary, the KDP crystal with the film coating has neither been dissolved nor gotten cloudy for three months when soaking in water.

scholarly journals Синтез и характеризация нового двойного бората рубидия–гольмия Rb3HoB6O12

2019 ◽  
Vol 21 (2) ◽  
pp. 278-286
Author(s):  
Alexey K. Subanakov ◽  
Evgeniy V. Kovtunets ◽  
Sampil Zh. Choydonov ◽  
Sesegma G. Dorzhieva ◽  
Bair G. Bazarov
Keyword(s):  
Rare Earth ◽  
Optical Materials ◽  
Nonlinear Optical ◽  
Luminescent Properties ◽  
Spectroscopic Properties ◽  
Nonlinear Optical Materials ◽  
Nonlinear Optical Crystal ◽  
Nonlinear Optical Crystals ◽  
Optical Crystals ◽  
Optical Crystal

Методом цитратной золь-гель технологии получен новый двойной борат рубидия–гольмия состава Rb3HoB6O12. Соединение кристаллизуется в тригональной сингонии (пр. гр. R32, a = 13.4038(7), с = 30.315(2) Å, V = 4716.76 Å3) и плавится инконгруэнтно при 818 °С. Попытки получить в однофазном состоянии Rb3HoB6O12 методом твердофазных реакций не привели к положительному результату     REFERENCES Wu C., Yang G., Humphrey M.G., Zhang C. Recent advances in ultraviolet and deep-ultraviolet secondorder nonlinear optical crystals // Chem. Rev., 2018, v. 375, pp. 1–30. https://doi.org/10.1016/j.ccr.2018.02.017 Bubnova R., Volkov S., Albert B., Filatov S. Borates – crystal structures of prospective nonlinear optical materials: high anisotropy of the thermal expansion caused by anharmonic atomic vibrations // Crystals, 2017, v. 7, pp.1–32. DOI: 10.3390/cryst7030093 Becker P. Borate materials in nonlinear optics // Mater., 1998, v. 10, pp. 979–992. https://doi.org/10.1002/(SICI)1521-4095(199809)10:13<979::AIDADMA979>3.0.CO;2-N Chen C., Li R. The anionic group theory of the nonlinear optical effect and its applications in the development of new high-quality NLO crystals in the borate series // Rev. Phys. Chem., 1988, v. 8, pp. 65–91. https://doi.org/10.1080/01442358909353223 Chen C., Wu Y., Jiang A., Wu B., You G., Li R., Lin S. New nonlinear-optical crystal: LiB3O5 // Opt. Soc. Am. B: Opt. Phys., 1989, v. 6, pp. 616–621. https://doi.org/10.1364/JOSAB.6.000616 French R. H., Ling J. W., Ohuchi F. S., Chen C. T. Electronic structure of b-BaB2O4 and LiB3O5 nonlinear optical crystals // Rev. B: Condens. Matter, 1991, v. 44, pp. 8496–8502. https://doi.org/10.1103/Phys-RevB.44.8496 Yusuke Mori, Ikio Kuroda, Satoshi Nakajima, Takamoto Sasaki, Sadao Nakai. New nonlinear optical crystal: Cesium lithium borate // Phys. Lett., 1995, v. 67, pp. 1818–1820. https://doi.org/10.1063/1.115413 Haohai Yu, Zhongben Pan, Huaijin Zhang, Jiyang Wang. Recent advances in self-frequency-doubling crystals // Materiomics, 2016, v. 2, pp. 55–65. https://doi.org/10.1016/j.jmat.2015.12.001 Bajor A.L., Kisielewski J., Klos A., Kopzyński K., Lukasiewicz T., Mierczyk J., Mlyńczak J. Assessment of gadolinium calcium oxoborate (GdCOB) for laser applications // Opto-electronics Review, 2011, v. 19, pp. 439–448. https://doi.org/10.2478/s11772-011-0042-2 Dan Zhao, Cong-Kui Nie, Ye Tian, Bao-Zhong Liu, Yun-Chang Fan, Ji Zhao. A new luminescent host material K3GdB6O12: synthesis, crystal structure and luminescent properties activated by Sm3+ // Kristallogr., 2018, v. 233, pp. 411–419. https://doi.org/10.1515/zkri-2017-2101 Dan Zhao, Fa-Xue Ma, Rui-Juan Zhang, Wei Wei, Juan Yang, Ying-Jie Li. A new rare-earth borate K3LuB6O12: crystal and electronic structure, and luminescent properties activated by Eu3+ // Mater Sci: Mater Electron., 2017, pp. 1–9. https://doi.org/10.1007/s10854-016-5501-6 Atuchin V. V., Subanakov A. K., Aleksandrovsky A. S., Bazarov B. G., Bazarova J. G., Dorzhieva S. G., Gavrilova T. A., Krylov A. S., Molokeev M. S., Oreshonkov A. S., Pugachev A. M., Tushinova Yu. L., Yelisseyev A. P. Exploration of structural, thermal, vibrational and spectroscopic properties of new noncentrosymmetric double borate Rb3NdB6O12 // Powder Technol., 2017, v. 28, pp. 1309–1315. https://doi.org/10.1016/j.apt.2017.02.019 Atuchin V. V., Subanakov A. K., Aleksandrovsky A. S., Bazarov B. G., Bazarova J. G., Gavrilova T. A., Krylov A. S., Molokeev M. S., Oreshonkov A. S., Stefanovich S. Yu. Structural and spectroscopic properties of new noncentrosymmetric selfactivated borate Rb3EuB6O12 with B5O10 units // Des., 2018, v. 140, pp. 488–494. https://doi.org/10.1016/j.matdes.2017.12.004 Sangen Zhao, Guochun Zhang, Jiyong Yao, Yicheng Wu. K3YB6O12: A new nonlinear optical crystal with a short UV cutoff edge // Res. Bull., 2012, v. 47, pp. 3810–3813. https://doi.org/10.1016/j.materresbull.2012.05.062 Miriding Mutailipu, Zhiqing Xie, Xin Su, Min Zhang, Ying Wang, Zhihua Yang, Muhammad Ramzan Saeed Ashraf Janjua, Shilie Pan. Chemical cosubstitution- oriented design of rare-earth borates as potential ultraviolet nonlinear optical materials // Am. Chem. Soc., 2017, v. 139, pp. 18397–18405. https://doi.org/10.1021/jacs.7b11263 Li Yang, Yingpeng Wan, Honggen Weng, Yanlin Huang, Cuili Chen, Hyo Jin Seo. Luminescence and color center distributions in K3YB6O12 : Ce3+ phosphor // Phys. D: Appl. Phys., 2016, v. 49 (325303), pp. 1–12. https://doi.org/10.1088/0022-3727/49/32/325303

Photochemical Moisture Proof Coating on Nonlinear Optical Crystal by ArF Excimer Laser

2004 ◽  
Vol 843 ◽  
Author(s):  
M. Kojima ◽  
M. Murahara
Keyword(s):  
Excimer Laser ◽  
Nonlinear Optical ◽  
Silicone Oil ◽  
Crystal Surface ◽  
Substrate Surface ◽  
New Technology ◽  
Nonlinear Optical Crystal ◽  
Nonlinear Optical Crystals ◽  
Arf Excimer Laser ◽  
Optical Crystal

ABSTRACTSilicone oil was photo-chemically oxidized to change into SiO2 on the crystal by using an ArF excimer laser; the protective moistureproof film has been developed for a nonlinear optical crystal that is deliquescent.The nonlinear optical crystals such as CsLiB6O10 (CLBO) and KH2PO4 (KDP) are deliquescent, which causes their surfaces to be cloudy by absorbing moisture in the air. We, therefore, demonstrated the growth of the SiO 2 film directly on the crystal so as to be moistureproof.Firstly, dimethylsiloxane silicone oil (-O-Si(CH3)2-O-)n was poured on the substrate and coated by a spinner for making the silicone oil thin layer. Then, the ArF excimer laser was vertically irradiated on the sample in oxygen atmosphere. The O atom on the substrate surface was photo-excited by the laser to generate a high active O atom. At the same time, the Si-CH3 bond of the silicone oil was photo-dissociated and the dangling bond of Si was linked with the active O atom to form a SiO 2 film on the crystal surface.In short, the film formed by the new technology can be used as a protective coating, which has the moisture resistance and the UV permeability, for a nonlinear optical crystal.

Co-crystal LiCl·(H3C3N3O3): a promising solar-blind nonlinear optical crystal with giant nonlinearity from coplanar π-conjugated groups

2019 ◽  
Vol 55 (44) ◽  
pp. 6257-6260 ◽  
Author(s):  
Fei Liang ◽  
Naizheng Wang ◽  
Xiaomeng Liu ◽  
Zheshuai Lin ◽  
Yicheng Wu
Keyword(s):  
First Principles ◽  
Nonlinear Optical ◽  
First Principles Calculations ◽  
Nonlinear Optical Crystal ◽  
Nonlinear Optical Crystals ◽  
Solar Blind ◽  
Optical Crystals ◽  
Optical Crystal

Co-crystal LiCl·(H3C3N3O3) with the largest SHG coefficient among all solar-blind nonlinear optical crystals was studied by first principles calculations.

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