Fig. 3: Tunable hybrid electro-optic cavities.
From: Electro-optic cavities for in-situ measurement of cavity fields
a Tunable hybrid EOC design, implemented by a pair of electro-optic crystals with gold mirrors on the exterior facets, and a remotely-controllable air gap of size \({L}_{{\rm{Air}}}\). b Representative EO signal of a hybrid EOC with an air gap size of \({L}_{{\rm{Air}}}\) = 167 µm. Standard error of EOC signal is represented here and in (c) by light areas. c Corresponding EOC spectrum of (b). d Systematic measurement of EOC signal (false color) as a function of the air gap size \({L}_{{\rm{Air}}}\), where the dashed line indicates the gap size shown in (b, c). e Continuous EOC spectra (false color), derived from panel (d) with mode eigenvalues from Scattering Matrix Method (gray lines) overlaid
