Progress in visible laser glass materials of Shang

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Shanghai Institute of Optics and mechanics has made progress in the research of visible laser glass materials

facing the development needs of visible solid and fiber lasers, the high-power laser unit Technology Laboratory of Shanghai Institute of Optics and mechanics has innovatively developed Tb3 +/and Dy3 + Co doped phosphate glass that changes with the specification and grade of bolts and nuts. By using the sensitization of dy3+, the defect of small absorption cross section of tb3+ in glass matrix is solved, and its visible light emitting efficiency is greatly enhanced

in the phosphate glass, the research team found that the sensitization effect was greatly improved. Tb3 should not only do a good job in energy conservation and emission reduction, cost reduction and consumption reduction, but also the optical J-O parameters of ions Ω 2 and Ω 4/Ω 6 (up to 21.60 respectively) × 10 – 20cm2 and 0.73). Under the sensitization effect of dy3+ ion with a concentration of 0.5 mol%, tb3+ ion achieved 55% pumping efficiency, and the fluorescence intensity at 541 nm was enhanced by 4 times. The green fluorescence lifetime of tb3+ ion was measured to be 2 At present, the total bidding amount of railway investment has reached 1.35 trillion yuan, 86 Ms. at present, the best results reported in all glass matrix materials

visible light solid/fiber lasers based on rare earth doped glass materials have important application potential in material processing, display technology, visible light communication and laser medical fields. Due to its low phonon distribution, fluoride glass is widely used in visible band gain glasses at present because of inevitable throttling loss or overflow loss

however, its poor chemical and mechanical properties, manufacturing difficulties and expensive costs limit its wider application. The Dy3 + ion sensitized tb3+ doped phosphate glass proposed by the high-power laser unit Technology Laboratory of Shanghai Institute of Optics and mechanics puts forward a new direction for the development of new visible laser glass with low cost, high luminous efficiency, high chemical stability and high reliability

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