Working Principle: The system consists of a direct current excited carbon dioxide laser tube.

CO2 fills a closed RF laser tube with electrodes. The laser tube is placed in an optical resona-tor with mirrors at both ends; the mirrors at the back are fully reflective, while the mirrors at the front are partially reflective and capable of directing the CO2 laser beam into the delivery system.

The DC power supply (pump) provides voltage to the electrode, which produces electron re-lease perpendicular to the laser tube. The released electrons collide with CO2 molecules in the gas matrix and excite them to a vibrantly excited state (asymmetric stretching). The stimulated release occurs between this energy state and a lower energy state (symmetric stretching), producing a far-infrared laser with a wavelength of 10.6 micrometers. The wavelength of the CO2 laser is located in the mid-wave infrared region of the electro-magnetic wave, which is not visible to the naked eye.

Clinical principle: The CO2 laser used in the vaginal laser therapy are with their wavelengths

of 10600nm in the invisible area and have their absorption maximum in the tissue water. De-pending on the applied energy and pulse duration, different effects occur in the tissue: from cold ablation through explosive vaporization of tissue water to a purely thermal, non-ablative reaction.

Due to their physical properties, the CO2 lasers were mainly absorbed by the mucosa during vaginal laser therapy, could show with histological specimens that in the anticonvulsant hor-mone therapy an effect up to the lamina propria is to be proven: an increase of blasts and fi-brils as an indication for a possible neo collagenisation. Various studies have been able to show by histological studies that after a vaginal laser therapy to a thickening of the vaginal epithelium and to improve the vascularization, without damaging surrounding tissue.