20 October 2022, Volume 9, Issue 10, pp. 1100-1209

A wedged diamond membrane integrated in a fully tunable open Fabry-Perot microcavity. Adjusting both the mirror separation via vertical and the diamond thickness via lateral movement provides full control of both the absolute frequency and the frequency difference of two optical modes. Such a platform enables the double-resonant enhancement of nonlinear processes, such as Raman scattering, over wide frequency range. See Flågan et al., pp. 1197–1209. See print version of the cover.