Optical Second Harmonic Generation in CdxZn1−xS and the CdxZn1−xS:CdyZn1−yS Superlattice System

MRS Proceedings ◽

10.1557/proc-228-357 ◽

1991 ◽

Vol 228 ◽

Author(s):

J. T. Mullins ◽

T. Taguchi

Keyword(s):

Optical Absorption ◽

Second Harmonic Generation ◽

Harmonic Generation ◽

Second Harmonic ◽

Epitaxial Layers ◽

Resonant Enhancement ◽

Harmonic Radiation ◽

Optical Second Harmonic Generation ◽

Strained Layer Superlattices ◽

Second Harmonic Radiation

ABSTRACTOptical second harmonic generation in epitaxial layers of CdxZn1−xS and CdxZn1−xS:ZnS and CdS:CdxZn1−xS strained layer superlattices which had been removed from their substrates has been investigated. Some evidence for resonant enhancement of the second order non-linear susceptibility has been found for one sample where the onset of optical absorption was at photon energies close to that of the second harmonic radiation.

Download Full-text

Laser second harmonic generation in a rippled density plasma in the presence of azimuthal magnetic field

Laser and Particle Beams ◽

10.1017/s0263034609990498 ◽

2009 ◽

Vol 27 (4) ◽

pp. 719-724 ◽

Cited By ~ 12

Author(s):

U. Verma ◽

A.K. Sharma

Keyword(s):

Magnetic Field ◽

Second Harmonic Generation ◽

Harmonic Generation ◽

Second Harmonic ◽

Transverse Component ◽

Azimuthal Magnetic Field ◽

Harmonic Radiation ◽

Potential Source ◽

Oscillatory Velocity ◽

Second Harmonic Radiation

AbstractThe strong azimuthal magnetic fields, observed in many laser plasma experiments, are shown to be a potential source of second harmonic generation. The laser imparts oscillatory velocity to electrons and exerts a longitudinal pondromotive force on them. This force in conjunction with the azimuthal magnetic field and density ripple produces a second harmonic current with significant transverse component. The latter produces resonant second harmonic radiation.

Download Full-text

Terahertz radiation and second-harmonic generation from a single-component polar organic ferroelectric crystal

Journal of Materials Chemistry C ◽

10.1039/c8tc02638f ◽

2018 ◽

Vol 6 (35) ◽

pp. 9330-9335 ◽

Cited By ~ 12

Author(s):

Uppari Venkataramudu ◽

Chakradhar Sahoo ◽

Solaiappan Leelashree ◽

Mottamchetty Venkatesh ◽

Damarla Ganesh ◽

...

Keyword(s):

Second Harmonic Generation ◽

Harmonic Generation ◽

Terahertz Radiation ◽

Second Harmonic ◽

Single Component ◽

Ferroelectric Crystal ◽

Harmonic Radiation ◽

Second Harmonic Radiation

A single-component polar organic ferroelectric crystal produces THz and second-harmonic radiation.

Download Full-text

Nonlinear Optical Studies of Mixed π-Conjugated Polymer Multilayers by Second Harmonic Generation

MRS Proceedings ◽

10.1557/proc-173-691 ◽

1989 ◽

Vol 173 ◽

Author(s):

H. Koezuka ◽

T. Kurata ◽

A. Tsumura ◽

H. Fuchigami

Keyword(s):

Second Harmonic Generation ◽

Harmonic Generation ◽

Layered Structure ◽

Conjugated Polymer ◽

Nonlinear Optical ◽

Second Harmonic ◽

Optical Studies ◽

Harmonic Radiation ◽

Second Harmonic Radiation ◽

Maker Fringe

ABSTRACTThe structures of the mixed LB monolayers, composed of two different kinds of π-conjugated system, poly(3-hexylthiophene) (PHT) and pentacosa-10, 12-diynoic acid (DA), have been investigated mainly by a second harmonic generation (SHG) Maker fringe method. The mixed LB films partly contain a double-layered structure consisting of PHT and DA. The second harmonic radiation has been produced from slightly twisted PHT in the double layer. Both UV-polymerization of DA and successive heat-treatments enhanced the SHG intensities. The enhancement of the SHG intensities has been elucidated by the enlargement of the PHT twisting and the interaction between PHT and a newly formed π-conjugated system.

Download Full-text