Related papers: Objective-free excitation of quantum emitters with a laser-written micro parabolic mirror

Objective-free excitation of quantum emitters with a laser-written micro parabolic mirror

URL: http://arxiv.org/abs/2003.03089v2
Date: Tue, 30 Jun 2020 16:55:44 GMT
Title: Objective-free excitation of quantum emitters with a laser-written micro parabolic mirror
Authors: Sergii Morozov, Stefano Vezzoli, Ali Hossain Khan, Iwan Moreels, Riccardo Sapienza
Abstract summary: A 3.2 um wide parabolic mirror is fabricated by direct laser writing on CdSe/CdS colloidal quantum dots. It is capable of focusing the excitation light to a sub-wavelength spot and to extract the generated emission by collimating it into a narrow beam.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: The efficient excitation of quantum sources such as quantum dots or single molecules requires high NA optics which is often a challenge in cryogenics, or in ultrafast optics. Here we propose a 3.2 um wide parabolic mirror, with a 0.8 um focal length, fabricated by direct laser writing on CdSe/CdS colloidal quantum dots, capable of focusing the excitation light to a sub-wavelength spot and to extract the generated emission by collimating it into a narrow beam. This mirror is fabricated via in-situ volumetric optical lithography, which can be aligned to individual emitters, and it can be easily adapted to other geometries beyond the paraboloid. This compact solid-state transducer from far-field to the emitter has important applications in objective-free quantum technologies.

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