High second‐harmonic conversion efficiency of quasi‐phase‐matched LiTaO3 waveguides pumped by single‐mode pulsed AlGaAs laser diodes

1995 ◽  
Vol 67 (16) ◽  
pp. 2263-2265 ◽  
Author(s):  
A. Azouz ◽  
N. Stelmakh ◽  
J.‐M. Lourtioz ◽  
D. Delacourt ◽  
D. Papillon ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Second Harmonic ◽  
Laser Diodes ◽  
Single Mode ◽  
Harmonic Conversion

Low-noise operation (−140 dB/Hz) in close-coupled Nd:YVO_4 second-harmonic lasers pumped by single-mode laser diodes

1993 ◽  
Vol 32 (33) ◽  
pp. 6610 ◽  
Author(s):  
Hideo Nagai ◽  
Masahiro Kume ◽  
Akio Yoshikawa ◽  
Kunio Itoh
Keyword(s):  
Second Harmonic ◽  
Laser Diodes ◽  
Single Mode ◽  
Low Noise ◽  
Mode Laser ◽  
Single Mode Laser

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 Analytical approximation of the second-harmonic conversion efficiency

2020 ◽  
Vol 59 (28) ◽  
pp. 9010
Author(s):  
John R. Daniel ◽  
Shan-Wen Tsai ◽  
Boerge Hemmerling
Keyword(s):  
Conversion Efficiency ◽  
Second Harmonic ◽  
Analytical Approximation ◽  
Harmonic Conversion

scholarly journals Theoretical analysis of second-harmonic conversion efficiency in negative-index materials

2009 ◽  
Vol 58 (2) ◽  
pp. 914
Author(s):  
Zhou Cheng ◽  
Gao Yan-Xia ◽  
Wang Pei-Ji ◽  
Zhang Zhong ◽  
Li Ping
Keyword(s):  
Theoretical Analysis ◽  
Conversion Efficiency ◽  
Second Harmonic ◽  
Negative Index ◽  
Negative Index Materials ◽  
Harmonic Conversion

scholarly journals 400%/W second harmonic conversion efficiency in 14 μm-diameter gallium phosphide-on-oxide resonators

2018 ◽  
Vol 26 (26) ◽  
pp. 33687 ◽  
Author(s):  
Alan D. Logan ◽  
Michael Gould ◽  
Emma R. Schmidgall ◽  
Karine Hestroffer ◽  
Zin Lin ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Gallium Phosphide ◽  
Second Harmonic ◽  
Harmonic Conversion
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