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Nonlinear laser absorption over a dielectric embedded with nanorods

Published online by Cambridge University Press:  11 November 2019

Soni Sharma  and
A. Vijay
Soni Sharma
Affiliation:
Department of Physics, GLA University, Mathura-281406, India
A. Vijay*
Affiliation:
Department of Physics, GLA University, Mathura-281406, India
*
Author for correspondence: A. Vijay, Department of Physics, GLA University, Mathura-281406, India. E-mail: [email protected]
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Abstract

An analytical formalism of laser absorption in a nanorod embedded dielectric surface has been developed. Nanorods lie in the plane of the dielectric, in the form of a planar array. A laser, impinged on them with an electric field perpendicular to the lengths of the nanorods, imparts oscillatory velocity to nanorod electrons. As the free electrons of a nanorod are displaced, a space charge field is developed in the nanorod that exerts restoration force on the electrons and their drift velocity shows a resonance at ${\rm \omega} = {\rm \omega} _{\rm p}/\sqrt 2 $, where ωp denotes the plasma frequency of free electrons inside the nanorod. It is inhibited by collisions and nanorod expansion. At the resonance, the electrons are efficiently heated by the laser and laser energy is strongly absorbed, resulting in significant reduction in laser transmissivity. The transmissivity decreases with laser intensity.

Keywords

Dielectric surfacelaser absorptionnanorodsplasma frequency
Type
Research Article
Information
Laser and Particle Beams , Volume 37 , Issue 4 , December 2019 , pp. 381 - 385
Copyright
Copyright © Cambridge University Press 2019

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References

Ahmad, A and Tripathi, VK (2006) Nonlinear absorption of femtosecond laser on a metal surface embedded by metallic nanoparticles. Applied Physics Letters 89, 153112.CrossRefGoogle Scholar
Amendola, V, Rizz, GA, Polizz, S and Meneghetti, M (2005) Synthesis of gold nanoparticles by laser ablation in toluene: quenching and recovery of the surface plasmon absorption. Journal of Physical Chemistry B 109, 23125–23128.CrossRefGoogle ScholarPubMed
Bendib, A (2017) Nonlinear collisional absorption and induced anisotropy in plasmas heated by an intense laser field. Physics of Plasmas 24, 070702.CrossRefGoogle Scholar
Burakov, IM, Bulgakova, NM, Stoian, R, Mermillod-Blondin, A, Audouard, E, Rosenfeld, A, Husakou, A and Herte, IV (2007) Spatial distribution of refractive index variations induced in bulk fused silica by single ultrashort and short laser pulses. Journal of Applied Physics 101, 043506.CrossRefGoogle Scholar
Deepika, , Chauhan, P, Varshney, A, Singh, DB and Sajal, V (2015) Enhanced absorption of surface plasma wave by metal nanoparticle in the presence of external magnetic field. Journal of Physics D: Applied Physics 48, 345103.CrossRefGoogle Scholar
Ditmire, T, Zweiback, J, Yanovsky, VP, Cowan, TE, Hays, G and Wharton, KB (1999) Nuclear fusion from explosions of femtosecond laser-heated deuterium clusters. Nature 398, 489–492.CrossRefGoogle Scholar
Hwang, TY, Vorobyev, AY and Guo, C (2009) Ultrafast dynamics of femtosecond laser-induced nanostructure formation on metals. Applied Physics Letters 95, 123111.CrossRefGoogle Scholar
Kumar, A and Verma, AL (2011) Nonlinear absorption of intense short pulse laser over a metal surface embedded with nanoparticles. Laser and Particle Beams 29, 333–338.CrossRefGoogle Scholar
Kumar, M and Tripathi, VK (2013) Nonlinear absorption and harmonic generation of laser in a gas with anharmonic clusters. Physics of Plasma 20, 023302.CrossRefGoogle Scholar
Link, S, Burda, C, Nikoobakht, B and El-Sayed, MA (2001) How long does it take to melt a gold nanorod?: A femtosecond pump–probe absorption spectroscopic study. Chemical Physics Letters 315, 12–18.CrossRefGoogle Scholar
Liu, CS and Tripathi, VK (2003) Ion Coulomb explosion of clusters by a Gaussian laser beam. Physics of Plasmas 10, 4085–4089.CrossRefGoogle Scholar
Phipps, CA, Zhigilei, L, Polynkin, P, Baumert, T, Sarnet, T, Bulgakova, N, Bohn, W and Reif, J (2014) Laser interaction with materials: introduction. Applied Optics 53, LIM1–LIM3CrossRefGoogle ScholarPubMed
Pustovalov, VK (2004) Theoretical study of heating of spherical nanoparticle in media by short laser pulses. Chemical Physics 308, 103–108.CrossRefGoogle Scholar
Thareja, RK and Sharma, AK (2006) Reactive pulsed laser ablation: plasma studies. Laser and Particle Beams 24, 311–320.CrossRefGoogle Scholar
Yoneda, H, Inubushi, Y, Yabashi, M, Katayama, T, Ishikawa, T, Ohashi, H, Yumoto, H, Yamauchi, K, Mimura, H and Kitamura, H (2014) Saturable absorption of intense hard X-rays in iron. Nature Communication 10, 1038.Google Scholar