Study Of Random Laser Based On Energy Transfer Of Plasmon Resonan

Random laser are studied not only for their interesting physical properties,but also for their importance in technological app Iications.Fundamentally,the study of random laser helps us understand how the localization effects interplay with coherent amplification and how a random lasing mode evolves in the lasing process.Random laser are a new tool to study the localization effects of the random systems and the chemical properties of the gain medium.The promising industrial uses of random laser are cheap and efficient sources of light,including micro-lasers,paint,pixels,photonic marking for identification purposes(photonic codes,search-and-rescue missions,military applications,marking of hazardous materials)and photo-dynamics therapy.In this paper,we mainly study the random laser based on the plasma resonance energy conversion.The effect of the plasma resonance effect between different metal nanoparticles and different laser dyes on the behavior of random laser is studied,At the same time,the threshold of random laser is studied,Stud y on the stability and its principle,The main contents are as follows:1.The concept of random laser is introduced briefly,and the way to generate random lasers,different from traditional laser and its application.At the same time,the research status of random laser is introduced.2.The principle of laser generation and the characteristics of laser and traditional laser theory are introduced.The mechanism of random laser generation and the random laser theory and the classification of random laser are analyzed.3.We fabricated liquid core fibers with different sizes of gold nanoparticles and PM597 laser dyes.The oil-soluble gold nanoparticles with different sizes were synthesized and the gold nanoparticles were characterized.The laser phenomenon of PM597 laser dyes and different sizes of gold nanoparticles in solution system and liquid core fiber was studied.The effects of the local surface plasmon resonance peaks of different sizes of gold nanoparticles and the emission spectra of PM597 laser dyes on the random laser behavior were investigated.4.In this paper,the effect of surface plasmon resonance(SPR)on the random laser is studied.We synthesized the fiber core and cladding of the fiber drawing tower and drawn into an optical fiber.The behavior of the random laser induced by the local surface plasmon resonance(SPR)of the polymer fiber and the PM597 laser dye in the polymer optical fiber is studied,the relationship between the intensity of random laser and pump energy is analyzed,threshold of random laser,stability of random lasers.5.The synthesis of metal nanosilver particles was studied,plasma resonance spectra of metal nanoparticles with different ratios of polyvinylpyrrolidone and hydrogen peroxide.We studied the effect of nanosilver particles on the absorption and emission spectra of rhodamine 6G,it is found that the localized surface plasmon resonance of the silver nanoparticles can promote the generation of random laser.