Reflectionless Tunnelling of Light in Gradient Optics

Details Reflectionless Tunnelling of Light in Gradient Optics Reflectionless Tunnelling of Light in Gradient Optics

2005-12-15

arxiv.org/abs/physics/0512137v2

Optics Letters 31 (2006) 1127

Physics

Optics

Scientific paper

10.1364/OL.31.001127

We analyse the optical (or microwave) tunnelling properties of electromagnetic waves passing through thin films presenting a specific index profile providing a cut-off frequency, when they are used below this frequency. We show that contrary to the usual case of a square index profile, where tunnelling is accompanied with a strong attenuation of the wave due to reflection, such films present the possibility of a reflectionless tunnelling, where the incoming intensity is totally transmitted.

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