Narrow band emission from Au-film on Cu- substrate

TL;DR

This study reports narrow band emission from gold films on copper substrates excited by a red laser, but the origin of the emission remains uncertain due to inconclusive experimental data.

Contribution

It presents experimental observations of narrow band emission from Au on Cu substrates and discusses potential explanations, highlighting the need for further investigation.

Findings

Strong narrow band emission observed in spectra

Emission excited by red He-Ne laser in Raman geometry

Insufficient data to determine emission origin

Abstract

The experiments reveal the strong narrow band in the spectra of the emission from Au-film on the Cu substrate. The emission was excited by red He-Ne laser in standard geometry for Raman back-scattering experiments. Some additional experiments were made. The set of obtained data did not give enough arguments to make the final conclusion about the nature of this emission. The details of experiments, results, and possible explanations are discussed.