Abstract: A single laser system that operates at any one or any combination of at least five wavelengths each of which are important to medical facilities offering laser cosmetic services. The present invention includes appropriate laser optics and a crystal rod configured to produce a first pulsed laser beam, and appropriate laser optics and a second crystal rod configured to produce a second pulsed laser beam. Both rods are pumped simultaneously preferably from the same pump source. Beams from each of these lasers are frequency doubled using frequency-doubling crystals to produce third and fourth laser beams. The frequencies of the first and second beams are also combined in a sum frequency generating crystal to produce a fifth laser beam. In a preferred embodiment the first and second laser beams are produced using YAP:Nd crystals with wavelengths of 1079 nm and 1341 nm. The third and fourth laser beams at 539.5 nm and 670.

Abstract: A laser system in which the gain medium is an excited YAP:Nd crystal. The system is configured so that the crystal produces a twin laser beam comprising wavelengths at both 1079 nm and 1340 nm with substantial intensities at each wavelength. Optical components are described which establish the desired ratio of the intensities of the light at each of the two wavelengths. These ratios, I1079 nm/I1340 nm, may vary from about 0.1 to 10. In a preferred embodiment of the invention a kit including a YAP:Nd crystal and a specially coated output coupler is provided for converting an existing Nd:YAG laser system to a twin light laser capable of producing the above described twin laser beam.

Abstract: A laser system in which the gain medium is an excited YAP:Nd crystal. The system is configured so that the crystal produces a twin laser beam comprising wavelengths at both 1079 nm and 1340 nm with substantial intensities at each wavelength. Optical components are described which establish the desired ratio of the intensities of the light at each of the two wavelengths. These ratios, I1079 nm/I1340 nm, may vary from about 0.1 to a preferred embodiment of the invention a kit including a YAP:Nd crystal and a specially coated output coupler is provided for converting an existing Nd:YAG laser system to a twin light laser capable of producing the above described twin laser beam.