Vibrational and optical spectroscopies integrated with environmental transmission electron microscopy

Here, we presera a measuremera plalform for collecling mulliple types of spectroscopy data during high resolution environmental transmission electron microscopy observations of dynamic processes. Such coupled measurements are made possible by a broadband, high-efficiency, free-space optical system. The critical element of the system is a parabolic mirror, inserted using an independent hollow rod and placed below the sample holder which can focus a light on the sample and/or collect the optical response. We demonstrate the versatility of this optical setup by using it to combine in situ atomic-scale electron microscopy observations with Raman spectroscopy. The Raman data is also used to measure the local temperature of the observed sample area. Other applications include, but are not limited to cathodo-and photoluminescence spectroscopy, and use of he laser as a local, high-rate healing source. Published by Elsevier B.V.