Electronic supplementary material from Nonlinear optical spectroscopy and two-photon excited fluorescence spectroscopy reveal the excited states of fluorophores embedded in a beetle’s elytra MouchetSébastien R. VerstraeteCharlotte MaraDimitrije CleuvenbergenStijn Van FinlaysonEwan D. DeunRik Van DeparisOlivier VerbiestThierry MaesBjorn VukusicPete KolaricBranko 2018 Non-linear optical spectroscopy and two-photon excited fluorescence spectroscopy reveal the excited states of fluorophores embedded in a beetle's elytra