SERS effect enhancement by surface wave in photonic crystal

 I. A. Boginskaya ¹, R. A. Sirazov ³, I. A. Nechepurenko ^1,2, A. V. Dorofeenko ^1,2,3, I. V. Bykov ¹, K. N. Afanasyev ¹,
 M. V. Sedova ¹, I. A. Ryzhikov ¹, A. P. Vinogradov ^1,2,3, A. V. Eremenko ^4,5, I. A. Budashov ^4,5, I. N. Kurochkin

 ¹ Institute for Theoretical and Applied Electromagnetics of RAS, Uzhorskaya st. 13, Moscow 125412, Russia
² Dukhov Research Institute of Automatics, Suschevskaya st. 22, Moscow 127055, Russia

³ Moscow Institute of Physics and Technology, Institutskiy lane 9, Dolgoprudnyi Moscoe region, 141700, Russia

⁴ Emanuel Institute of Biochemical Physics RAS, Kosygina st. 4, Moscow 119334, Russia

⁵ M.V. Lomonosov Moscow State University, Chemical Department, Leninskie Gory 1-3, Moscow 119991, Russia

 

The paper is received on October 11, 2017

 

Abstract. Surface enhanced Raman scattering (SERS) effect enhancement with a dielectric multilayer structure (1D photonic crystal) is proposed. The photonic crystal is used as a resonant substrate. The enhancement is due to the high field intensity at the PC/vacuum interface, where the SERS-active layer is placed. Numerical calculations show a possibility of 2-3 orders enhancement of SERS signal. We also propose a method of photonic crystal quality characterization with the use of spectroscopic ellipsometry. In the hypothetic lossless case the amplitude reflection coefficient does not reveal the presence of resonance. Only the phase of the reflection coefficient shows a resonant behavior, which is seen in the ellipsometric spectrum. Losses in the real system, which are caused by scattering and absorption, lead to the appearance of dip in the amplitude reflection spectrum. At some value of losses, the dip falls to zero, which is analogous to the same situation in Kretschmann effect. Further growth of losses leads to the decrease in the dip depth. We have shown that transition through the point of zero reflection is accompanied by an abrupt change in the ellipsometric spectrum. Thus, we argue that only the structures, which have losses below the aforementioned value, may be efficient as resonant SERS substrates.

Keywords: Raman scattering, photonic crystal, surface waves, ellipsometry.

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For citation:

I.A. Boginskaya, R.A. Sirazov, I.A. Nechepurenko, A.V. Dorofeenko, I.V. Bykov, K.N. Afanasyev, M.V. Sedova, I.A. Ryzhikov, A.P. Vinogradov, A.V. Eremenko, I.A. Budashov, I.N. Kurochkin. SERS effect enhancement by surface wave in photonic crystal. Zhurnal Radioelektroniki - Journal of Radio Electronics, 2017, No. 10. Available at http://jre.cplire.ru/jre/oct17/8/text.pdf. (In Russian)