Focusing membrane metamirrors for integrated cavity optomechanics

A. R. Agrawal, J. Manley, D. Allepuz-Requena +1

We have realized a suspended, high-reflectivity focusing metamirror ($f\approx 10$ cm, $\mathcal{R}\approx 99\%$) by non-periodic photonic crystal patterning of a Si${}_3$N${}_4$ memb…