This technology comprises multiple apparatuses to access slow electron transitions for spectroscopy, broadband emission, and quenching. The spectroscopy platform uses a radiation source to emit an excitation beam into a conductive layer, generating a 2D plasmon field. A probe beam then illuminates the testing sample in the 2D plasmon field. The sample absorbs spectral components of the probe beam, which is measured by a detector.
The broadband light emission platform uses an emitter placed a short distance away from a conductive layer. A light source illuminates the emitter with a monochromatic beam of light, exciting the emitter from first to second energy state. When the emitter relaxes to the first state, a broadband light beam is emitted with at least two plasmons.
The quenching platform uses molecules in singlet and triplet states that are placed above a 2D plasmon supporting surface. An emitter in an excited state quenches through the spontaneous emission of 2D plasmons by the surface molecules. The rate at which triplet state molecules can be quenched is tunable electronically by varying the conduction electron density of the surface.