Optical Recognition of Surface Chirality at Au(hkl) Single Crystalline Surfaces by Second Harmonic Generation Rotational Anisotropy

2005 ◽  
Vol 127 (36) ◽  
pp. 12743-12746 ◽  
Author(s):  
Ichizo Yagi ◽  
Masaki Chiba ◽  
Kohei Uosaki
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Single Crystalline ◽  
Optical Recognition ◽  
Crystalline Surfaces

Single-Crystalline Epitaxial ZnS Waveguides for Phase Matched Second Harmonic Generation Devices

1991 ◽  
Vol 30 (Part 1, No. 4) ◽  
pp. 667-671 ◽  
Author(s):  
Tohru Saitoh ◽  
Toshiya Yokogawa ◽  
Tadashi Narusawa
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Single Crystalline

scholarly journals Ambient-condition growth of high-pressure phase centrosymmetric crystalline KDP microstructures for optical second harmonic generation

2016 ◽  
Vol 2 (8) ◽  
pp. e1600404 ◽  
Author(s):  
Yan Ren ◽  
Xian Zhao ◽  
Edward W. Hagley ◽  
Lu Deng
Keyword(s):  
High Pressure ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Ambient Condition ◽  
Crystal Phase ◽  
Monoclinic Crystal ◽  
Single Crystalline ◽  
Type Iv ◽  
Optical Second Harmonic Generation

Noncentrosymmetric potassium dihydrogen phosphate (KH2PO4or KDP) in the tetragonal crystal phase is arguably the most extensively studied nonlinear optical crystal in history. It has prolific applications ranging from simple laser pointers to laser inertial confinement fusion systems. Recently, type IV high-pressure KDP crystal sheets with a monoclinic crystal phase having centrosymmetric properties have been observed. However, it was found that this new crystal phase is highly unstable under ambient conditions. We report ambient-condition growth of one-dimensional, self-assembled, single-crystalline KDP hexagonal hollow/solid-core microstructures that have a molecular structure and symmetry identical to the type IV KDP monoclinic crystal that was previously found to exist only at extremely high pressures (>1.6 GPa). Furthermore, we report highly efficient bulk optical second harmonic generation (SHG) from these ambient condition–grown single-crystalline microstructures, even though they have a highly centrosymmetric crystal phase. However, fundamental physics dictates that a bulk optical medium with a significant second-order nonlinear susceptibility supporting SHG must have noncentrosymmetric properties. Laue diffraction analysis reveals a weak symmetry-breaking twin-crystal lattice that, in conjunction with tight confinement of the light field by the tubular structure, is attributed to the significant SHG even with sample volumes <0.001 mm3. A robust polarization-preserving effect is also observed, raising the possibility of advanced optical technological applications.

Absolute Measurements of the Second Order Susceptibilities of ZnSe, ZnTe and ZnS

1998 ◽  
Vol 07 (04) ◽  
pp. 553-561 ◽  
Author(s):  
M. Kühnelt ◽  
H. P. Wagner
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Second Order ◽  
Light Sources ◽  
Single Crystalline ◽  
Absolute Measurements ◽  
Nm Range

The second order susceptibilities of single crystalline cubic ZnTe, ZnSe and ZnS have been determined using a Maker Oscillation technique. Q-switched Nd:YLF lasers emitting at fundamental wavelengths of λ F =1321 nm and λ F =1047 nm were used as light sources. The resulting second harmonic generation coefficients at λ F =1321 nm range from 8 pm/V (ZnS) to 52 pm/V (ZnTe). An increase of the values is observed at λ F =1047 nm as expected from the dispersion of the second order coefficients.

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