Development of dye laser feedback control system by using laser induced mass signals

Laser wavelength is very important in laser induced isotope ionization. In this study, we have studied the detection of wave length change and controling of laser wavelength when the experimental condition have changed, for example temperature. We have used two commercial dye lasers to ionize different isotope separately and have found that we can control laser wavelength less than several GHz. Samarium was used as a test element, and home made RIMS system was used to detect ionized mass signals. Maximum feedback wavelength is 10 times less than dye laser bandwidth. Experimental results shows that when initial wave length is not optimized, feedback system can find optimal wavelength and keep this wavelength more than several hours