25W average-power, second-harmonic-generation of a linearly-polarized Er fiber source in PPKTP and its application for tandem harmonic generation in UV

2004 ◽  
Author(s):  
M. Y. Vyatkin ◽  
R.I. Yagodkin ◽  
A. V. Avdokhin ◽  
A.G. Dronov ◽  
S.V. Popov ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Average Power ◽  
Linearly Polarized

High average power second harmonic generation in air

2009 ◽  
Vol 95 (12) ◽  
pp. 121502 ◽  
Author(s):  
Martynas Beresna ◽  
Peter G. Kazansky ◽  
Yuri Svirko ◽  
Martynas Barkauskas ◽  
Romas Danielius
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Average Power ◽  
High Average Power

The Growth of Organic Single Crystals in Glass Capillaries for Second Harmonic Generation

1989 ◽  
Vol 152 ◽  
Author(s):  
Geoffrey E. Holdcroft ◽  
P. L. Dunn ◽  
J. D. Rush
Keyword(s):  
Refractive Index ◽  
Second Harmonic Generation ◽  
Single Crystals ◽  
Harmonic Generation ◽  
Conversion Efficiency ◽  
Second Harmonic ◽  
Average Power ◽  
Single Mode ◽  
Glass Capillary ◽  
Fibre Direction

ABSTRACTThe growth and characterisation of a number of organic single crystals, e.g. benzil, 2–methyl–4– nitroaniline and 2–N,N–dimethylamino–5–nitroacetanilide, in silica capillary has become fairly well established over recent years. [1–6 ] However the growth of these same compounds in glass capillary with a much higher refractive index than silica has received little interest. Crystal cored fibres, ccf's, in which there is a close match of the refractive index of the cladding to that of the core allows the possibility of fabricating single mode waveguides with useful dimensions for crystal growth. There is a better overlap integral between phase matched fundamental and second harmonic modes in a low moded structure than in a structure with more allowable modes and thus a rise in the conversion efficiency can be expected if the correct dimensions of waveguide are chosen. If a ccf of high conversion efficiency, 10% at 0.1 mW average power, could be made then the promise of fabricating an organic optical nonlinear device, e.g. parametric amplifier, might be realised. In this paper we will describe how the growth method adopted for silica clad organic crystals has been adapted for their growth in a range of Schott glasses which are better matched in refractive index, RI, than silica to the organic material. The linear and nonlinear optical properties of these crystal cored fibres will be given in terms of; the orientation of the crystal axes with respect to the fibre direction; the sideways scattering characteristics from defects; the throughput of the fundamental beam; the polarisation states of both the fundamental and the second harmonic outputs; and the overall efficiency of second harmonic generation.

scholarly journals Efficient forward second-harmonic generation from planar archimedean nanospirals

Nanophotonics ◽  
2015 ◽  
Vol 4 (1) ◽  
pp. 108-113 ◽  
Author(s):  
Roderick B. Davidson II ◽  
Jed I. Ziegler ◽  
Guillermo Vargas ◽  
Sergey M. Avanesyan ◽  
Yu Gong ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Average Power ◽  
Two Dimensional ◽  
Harmonic Generator ◽  
Left Handed ◽  
Planar Arrays ◽  
Power Loading ◽  
Axis Of Symmetry

Abstract:The enhanced electric field at plasmonic resonances in nanoscale antennas can lead to efficient harmonic generation, especially when the plasmonic geometry is asymmetric on either inter-particle or intra-particle levels. The planar Archimedean nanospiral offers a unique geometrical asymmetry for second-harmonic generation (SHG) because the SHG results neither from arranging centrosymmetric nanoparticles in asymmetric groupings, nor from non-centrosymmetric nanoparticles that retain a local axis of symmetry. Here, we report forward SHG from planar arrays of Archimedean nanospirals using 15 fs pulses from a Ti:sapphire oscillator tuned to 800 nm wavelength. The measured harmonic-generation efficiencies are 2.6·10−9, 8·10−9 and 1.3·10−8 for left-handed circular, linear, and right-handed circular polarizations, respectively. The uncoated nanospirals are stable under average power loading of as much as 300 μWper nanoparticle. The nanospirals also exhibit selective conversion between polarization states. These experiments show that the intrinsic asymmetry of the nanospirals results in a highly efficient, two-dimensional harmonic generator that can be incorporated into metasurface optics.

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