Analyzing role of relaxation time on second harmonic generation and optical dielectric function of impurity doped quantum dots under the aegis of noise

2020 ◽  
Vol 588 ◽  
pp. 412166
Author(s):  
Sk Md Arif ◽  
Aindrila Bera ◽  
Anuja Ghosh ◽  
Manas Ghosh
Keyword(s):  
Quantum Dots ◽  
Relaxation Time ◽  
Second Harmonic Generation ◽  
Dielectric Function ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Doped Quantum Dots ◽  
Impurity Doped ◽  
Optical Dielectric

Exploring Optical Dielectric Function of Impurity Doped Quantum Dots in Presence of Gaussian White Noise

2017 ◽  
Vol 6 (1) ◽  
pp. 48-55
Author(s):  
Surajit Saha ◽  
Suvajit Pal ◽  
Jayanta Ganguly ◽  
Manas Ghosh
Keyword(s):  
White Noise ◽  
Dielectric Function ◽  
Gaussian White Noise ◽  
Peak Height ◽  
Peak Position ◽  
Doped Quantum Dots ◽  
Mode Of Application ◽  
Impurity Doped ◽  
Optical Dielectric

We investigate the total optical dielectric function (TODF) of impurity doped quantum dot (QD) in presence and absence of noise. Noise invoked is Gaussian white noise and the QD is doped with Gaussian impurity. Noise has been introduced to the system additively and multiplicatively. The TODF profiles have been monitored as a function of incident photon energy for different values of several important parameters. Moreover, the role of mode of application of noise (additive/multiplicative) on the TODF profiles has also been meticulously analyzed. We have found that the shift of TODF peak position and change in TODF peak height sensitively depend on presence/absence of noise and also on its mode of application. Introduction of multiplicative noise causes greater deviation of TODF profiles from that of noise-free condition than using additive noise.

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,...

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