Tweezers controlled resonator

Opt Express. 2015 Nov 2;23(22):28914-9. doi: 10.1364/OE.23.028914.

Abstract

We experimentally demonstrate trapping a microdroplet by using an optical tweezer and then activating it as a microresonator by bringing it close to a tapered-fiber coupler. Our tweezers facilitated the tuning of the coupling from the under-coupled to the critically-coupled regime while the quality-factor [Q] is 12 million and the resonator's size is at the 80 μm scale.