scholarly journals The role of ferroelectric domain structure in second harmonic generation in random quadratic media

2010 ◽  
Vol 18 (5) ◽  
pp. 4012 ◽  
Author(s):  
V. Roppo ◽  
W. Wang ◽  
K. Kalinowski ◽  
Y. Kong ◽  
C. Cojocaru ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Domain Structure ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Ferroelectric Domain ◽  
Ferroelectric Domain Structure

Second Harmonic Generation-based Nonlinear Plasmonic RI-Sensing in Solution: Pivotal Role of Particle Size

2021 ◽  
Author(s):  
Mrigank Verma ◽  
Manabendra Chandra
Keyword(s):  
Particle Size ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Gold Nanorods ◽  
Second Harmonic ◽  
Solution Phase ◽  
Pivotal Role

Here, we demonstrate the utility of the second harmonic generation (SHG) for refractometric sensing in the solution phase. We employ an aqueous colloid of gold nanorods as our sensors and,...

Second-harmonic near-field imaging of ferroelectric domain structure ofYMnO3

2009 ◽  
Vol 79 (10) ◽  
Author(s):  
Catalin C. Neacsu ◽  
Bas B. van Aken ◽  
Manfred Fiebig ◽  
Markus B. Raschke
Keyword(s):  
Domain Structure ◽  
Second Harmonic ◽  
Near Field ◽  
Ferroelectric Domain ◽  
Near Field Imaging ◽  
Ferroelectric Domain Structure ◽  
Field Imaging

scholarly journals Metal-Free Perovskites for Non-Linear Optical Materials

2019 ◽  
Author(s):  
Thomas W. Kasel ◽  
Zeyu Deng ◽  
Austin Mroz ◽  
Christopher H. Hendon ◽  
Keith Butler ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
First Principles Calculations ◽  
Halide Anion ◽  
Metal Free ◽  
Organic Group ◽  
Nlo Response ◽  
Earth Abundant

<div> <div> <div> <p>We identify the existence of nonlinear optical (NLO) activity in a number of novel ABX3-type metal-free perovskites, where A is a highly tuneable organic cation, B is a NH4 cation and X a halide anion. Through systematic first-principles calculations, we identify important trends to chart the second-harmonic generation of this class of materials. We study three perovskites MDABCO- NH4 I3 , CNDABCO-NH4 I3 and ODABCO-NH4 I3 for use as deep-UV second-harmonic generation materials. We identify the role of the dipole moment imparted by the organic group on the A cation as an important parameter to tune the NLO properties of these materials. We apply this knowledge functionalising the organic group DABCO with the highly polar cyanide CN group, and we demonstrate a significant improvement of the NLO response in this family of materials. These findings can accelerate the application of metal free perovskites as inexpensive, non-toxic, earth-abundant materials for the next generation of optical communication applications. </p> </div> </div> </div>

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