Experimental investigation on surface plasmon resonance (SPR) modulated interference has been proposed and demonstrated under radially sheared environment with the help of a birefringent lens. SPR modulated interference images captured by a charged couple device have been demonstrated in two different analyzing regime, namely, using an analyzer and using a Wollaston prism, the later being advantageous for the simultaneous observation of p- and s-polarized contribution towards SPR. We also report the analysis of the interference imaging for the two substrate materials and also for the two analytes in order to show the substrate-sample dependency of SPR. Moreover, phase dependent resonant behavior, together with the analysis of amplitude reflection co-efficient in complex plane, has been theoretically simulated and discussed in support of the present experimental investigation, which can be well utilized for biological and chemical sensing.
Experimental surface plasmon resonance modulated radially sheared interference imaging using a birefringent lens
Mahua Bera, Jayeta Banerjee, Mina Ray; Experimental surface plasmon resonance modulated radially sheared interference imaging using a birefringent lens. Appl. Phys. Lett. 23 June 2014; 104 (25): 251104. https://doi.org/10.1063/1.4884815
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