Tweezers controlled resonator

TL;DR

This paper demonstrates the use of optical tweezers to trap and tune microdroplet resonators, achieving high-quality factors and precise coupling control for potential applications in micro-optics.

Contribution

It introduces a novel method of combining optical tweezers with microresonator fabrication and tuning, enabling precise control over coupling regimes.

Findings

Achieved an optical Q of 12 million.

Successfully tuned coupling from under-coupled to critically coupled.

Demonstrated microresonator size at 85 microns.

Abstract

We experimentally demonstrate trapping a microdroplet with an optical tweezer and then enabling 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 with an optical Q of 12 million and microresonator size at the 85 mirons scale.