THE INVESTIGATIONS OF DIFFERENT NPP CRYSTAL SURFACE STRUCTURES BY AFM

1994 ◽  
Vol 03 (01) ◽  
pp. 45-53
Author(s):  
DA-WEN WANG ◽  
CHENG YE ◽  
JIAN-LIANG ZHAO ◽  
CHUN-LI BAI
Keyword(s):  
Nonlinear Optical ◽  
Crystal Surface ◽  
Surface Structures ◽  
Nonlinear Optical Crystal ◽  
Optical Efficiency ◽  
Optimal Angle ◽  
Molecular Charge ◽  
Optical Crystal ◽  
Bulk Structure ◽  
First Time

The investigations of nonlinear optical crystal surface structures have been reported in this paper for the first time. The AFM observations for cleavage (101) surface and (001) surface of NPP crystal indicate that the molecular arrangements on both of them are the same with its bulk structure, without any superstructure. And the phenyl and pyrrolidine rings in (001) surface can be distinguished. The angle between the molecular charge transfer axis and the binary axis obtained by AFM is 56°, closed to the optimal angle, which leads to the large nonlinear optical efficiency of NPP crystal.

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.

Growth of a nonlinear optical crystal: cesium lithium borate

1995 ◽  
Vol 156 (3) ◽  
pp. 307-309 ◽  
Author(s):  
Yusuke Mori ◽  
Ikuo Kuroda ◽  
Satosi Nakajima ◽  
Akira Taguchi ◽  
Takatomo Sasaki ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Lithium Borate ◽  
Nonlinear Optical Crystal ◽  
Optical Crystal

Measurement of thermal refractive index coefficients of nonlinear optical crystal RbBe2BO3F2

2013 ◽  
Vol 36 (2) ◽  
pp. 333-336 ◽  
Author(s):  
Naixia Zhai ◽  
Lirong Wang ◽  
Lijuan Liu ◽  
Xiaoyang Wang ◽  
Yong Zhu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Nonlinear Optical ◽  
Nonlinear Optical Crystal ◽  
Optical Crystal

Growth of a new nonlinear optical crystal YCa9(VO4)7

2007 ◽  
Vol 304 (1) ◽  
pp. 233-235 ◽  
Author(s):  
Zhoubin Lin ◽  
Guofu Wang ◽  
Lizhen Zhang
Keyword(s):  
Nonlinear Optical ◽  
Nonlinear Optical Crystal ◽  
Optical Crystal
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