Forced spaser oscillations

Alexander A. Lisyansky; Eugeney S. Andrianov; Alexander V. Dorofeenko; Alexander A. Pukhov; Alexey P. Vinogradov

doi:10.1117/12.946616

9 October 2012 Forced spaser oscillations

Alexander A. Lisyansky, Eugeney S. Andrianov, Alexander V. Dorofeenko, Alexander A. Pukhov, Alexey P. Vinogradov

Proceedings Volume 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X; 84570X (2012) https://doi.org/10.1117/12.946616
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

Abstract

We study oscillations of a spaser driven by an external optical wave. When the frequency of the external field is shifted from the frequency of an autonomous spaser, the spaser exhibits stochastic oscillations at low field intensity. The plasmon oscillations lock to the frequency of the external field only when the field amplitude exceeds a threshold value. We find a region of external field amplitude and the frequency detuning (the Arnold tongue) for which the spaser becomes synchronized with the external wave. We obtain the conditions upon the amplitude and frequency of the external field (the curve of compensation) at which the spaser’s dipole moment oscillates with a phase shift of π relatively to the external wave. For these values of the amplitude and frequency, the loss in the metal nanoparticles within the spaser is exactly compensated for by the gain. It is expected that if these conditions are not satisfied, then due to loss or gain of energy, the amplitude of the wave travelling along the system of spasers either tends to the curve of compensation or leave the Arnold tongue. We also consider cooperative phenomena showing that in a chain of interacting spasers, depending on the values of the coupling constants, either all spasers oscillate in phase or a nonlinear autowave travels in the system. In the latter scenario, the traveling wave is harmonic, unlike excitations in other nonlinear systems. Due to the nonlinear nature of the system, any initial distribution of spaser states evolves into one of these steady states.

Citation Download Citation

Alexander A. Lisyansky, Eugeney S. Andrianov, Alexander V. Dorofeenko, Alexander A. Pukhov, and Alexey P. Vinogradov "Forced spaser oscillations", Proc. SPIE 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X, 84570X (9 October 2012); https://doi.org/10.1117/12.946616

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available