Photochemical Hole Burning
Photochemical hole buring (PHB) is a laser spectroscopy method for measuring quasihomogeneous linewidths in the presence of inhomogenous line broadening (for a recent survey see 1). The holes, which are burnt with laser irradiation, appear as small indentations in the absorption spectra of dye molecules which are doped into a polymer or glass in minute concentrations.
KeywordsBlack Reaction Solvent Shift Inhomogenous Line Logarithmic Time Scale Photochemical Quantum Yield
- 1).J. Friedrich and d. Haarer in “Optical Spectroscopy of Glasses”, ed. I. Zschokke, Reidel Publ. Comp. 1986Google Scholar