Abstract
Biomedical spectroscopy has greatly attributed to the innovation of laser in last 60 years. Although
developments in optics and detectors brought huge contributions into molecular spectroscopy as well,
the laser technology was the largest driving force for the molecular spectroscopy to break through the
various difficulties especially in the biomedical applications. In this preface of the present special issue,
the history of laser is briefly mentioned along with the footsteps of fluorescence, infrared, Raman and
near-infrared spectroscopies.
