Homogeneous broadening spectral width

If dye molecules are embedded into an amorphous matrix, preferably transparent polymers, greatly and inbornogenously broadened spectral lines are observed. This broadening is caused by the energetic interaction of the dye molecules with the locally different environment in the polymer matrix. The ratio of the homogenous initial line width of the dye molecule T to the inhomogenous line width of the dye in the polymer T ranges from 1 10 to 1 10 . ... 

Fig. 12.17 Photochemical hole-burning within an inhomogeneously-broadened spectral line, narrow-band laser light is applied. A hole is then burned into the broad absorption line, with the spectral width of the laser light or with the homogeneous linewidth The absorption line of the...

In the case of inhomogeneous laser transitions, the whole line profile can be divided into homogeneously broadened subsections with the spectral width (for example, the natural linewidth or the pressure- or... 

---