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Experimental observation of flat focusing mirror based on photonic jet effect.

ABSTRACT: In this work, we experimentally demonstrate that a thin rectangle dielectric-metal structure can have a function of a flat focusing mirror based on photonic jet effect in reflection mode. Using polydimethylsiloxane (PDMS) rectangle with size length of 10 ?m and wavelength-scale thickness of 1 ?m on the top of a silicon wafer, we have built a flat mirror which focuses an incident beam at the focal length changing from 1.38 ?m to 11.67 ?m upon tuning the beam incidence angle from 30° to 75°. The focusing properties of such a mirror persist in the wavelength range of 405?nm to 671?nm. Our approach can be extended to realize other optical functionalities by properly controlling rectangle dimensions and materials. This flat focusing mirror is able to guide the incident beam in free space without perceptible diffraction at the distance equal to the photonic jet length and suitable for small-scale photonic circuits.

SUBMITTER: Minin IV

PROVIDER: S-EPMC7242355 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Experimental observation of flat focusing mirror based on photonic jet effect.

Minin Igor V IV Liu Cheng-Yang CY Yang Yu-Chih YC Staliunas Kestutis K Minin Oleg V OV

Scientific reports 20200521 1

In this work, we experimentally demonstrate that a thin rectangle dielectric-metal structure can have a function of a flat focusing mirror based on photonic jet effect in reflection mode. Using polydimethylsiloxane (PDMS) rectangle with size length of 10 μm and wavelength-scale thickness of 1 μm on the top of a silicon wafer, we have built a flat mirror which focuses an incident beam at the focal length changing from 1.38 μm to 11.67 μm upon tuning the beam incidence angle from 30° to 75°. The f ...[more]

PMID: 32439953

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