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The method involves measuring the polarization dependence of the STM-LE spectra and evaluating the localized surface plasmon confinement length to determine the presence and orientation of dipole emitter\/s. We apply this technique to the STM-LE from Au-tip\/Au(111) surface and Au-tip\/Ag(111) surface systems. The observed spectra contain multiple peaks that cannot be described by a single confinement length, indicating the presence of multiple dipole emissions arising from electrical excitation within the tip-surface junction. The polarization of the STM-LE from distinct dipoles reveals that these dipoles have different orientations. Our work demonstrates that a simple and all-optical addition to a standard ultrahigh vacuum STM system can be used to obtain more in-depth information from the STM-LE spectra.<\/jats:p>","DOI":"10.1177\/00037028261463282","type":"journal-article","created":{"date-parts":[[2026,6,20]],"date-time":"2026-06-20T05:08:49Z","timestamp":1781932129000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Simplified Protocol for Analyzing Polarization Properties of Scanning Tunneling Microscope (STM) Light Emission Spectra at an Oblique Angle"],"prefix":"10.1177","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9539-5858","authenticated-orcid":false,"given":"Lean","family":"Dasallas","sequence":"first","affiliation":[{"name":"University of the Philippines Diliman"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafael","family":"Jaculbia","sequence":"additional","affiliation":[{"name":"Institute for 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