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 The PEEM work was performed at the Center for Integrated Nanotechnologies, an Office of Science User Facility (DE-AC04-94AL85000). T. O. was supported by the CINT user program and Sandia LDRD. M. B. and C. C. were supported by a U.S. DOE-EERE SunShot BRIDGE award (DE-FOA-0000654 CPS25859). K. K. was supported by the Army Research Office MURI (W911NF-11-1-0362). A. D. M. was supported by LANL LDRD. J. M. R. and W. S. S. were supported by NSF PFI:AIR-RA (#1538733). We thank R. Guild Copeland for constructing the tunable DUV light source, and Norman Bartelt for fruitful discussions. We also thank Anthony McDonald for providing photoluminescence maps of the TMD samples. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.