摘要Polymers are a kind of attractive hosts for laser dyes because of their superior optical homogeneity, and high transparency in pumping and lasing range. Copolymers usually have higher damage threshold and better photostability than mono-polymers. Solid dye samples based on copolymer of methyl methacrylate (MMA) with 2-hydroxypropyl methacrylate (HPMA) doped with 1-, 3-, 5-, 7-, 8-pentamethyl-2, 6-diethylpyrromethene-BF2 (PM567) are prepared. Spectra and lasing properties of the samples are studied. Compared to the samples based on monopolymer polymethyl methacrylate (PMMA), enhanced slope efficiency and photostability are obtained in the copolymers. The highest slope efficiency is 45.1%, and nearly one-fold increase of photostability is obtained. The longest useful lifetime of 4390 pumping pulses is presented with the pump energy as high as 183mJ per pulse at repetition rate of 10Hz. The results indicate that the laser performances of solid dye mediums can be greatly increased using copolymer of MMA with HPMA as host.
Abstract：Polymers are a kind of attractive hosts for laser dyes because of their superior optical homogeneity, and high transparency in pumping and lasing range. Copolymers usually have higher damage threshold and better photostability than mono-polymers. Solid dye samples based on copolymer of methyl methacrylate (MMA) with 2-hydroxypropyl methacrylate (HPMA) doped with 1-, 3-, 5-, 7-, 8-pentamethyl-2, 6-diethylpyrromethene-BF2 (PM567) are prepared. Spectra and lasing properties of the samples are studied. Compared to the samples based on monopolymer polymethyl methacrylate (PMMA), enhanced slope efficiency and photostability are obtained in the copolymers. The highest slope efficiency is 45.1%, and nearly one-fold increase of photostability is obtained. The longest useful lifetime of 4390 pumping pulses is presented with the pump energy as high as 183mJ per pulse at repetition rate of 10Hz. The results indicate that the laser performances of solid dye mediums can be greatly increased using copolymer of MMA with HPMA as host.
[1] Soffer B H and McFarland B B 1967 Appl. Phys. Let. 10 266 [2] Peterson O G and Snavely B B 1968 Appl. Phys. Lett. 12 238 [3] Costela A, Garcia-Moreno I, Sastre R 2003 Phys. Chem. Chem.Phys. 5 4745 [4] Susdorf T, Del Agua D and Tyagi A et al 2007 Appl. Phys. B 86 537 [5] Costela A, Garcia-Moreno I, Figuere J M 1996 Opt.Commun. 130 44 [6] Hermes R E, Allik T H and Hutchinson J A 1993 Appl. Phys.Lett. 63 877 [7] Singh S, Kanetkar V R, Sridhar G, Muthuswamy V and Raja K 2003 J. Luminescence 101 286 [8] Rahn M D, King T A 1995 Appl. Opt. 34 8260 [9] Ahmad M, King T A, Cha B H and Lee J 2002 Opt. Laser Technol. 34 445 [10] Giffin S M, McKinnie I T, Wadsworth W J et al 1999 Opt.Commun. 161 163 [11] Calder\'on O G, Guerra J M, Costela A et al 1997 Appl. Phys.Lett. 70 25 [12] Bergmann A, Holzer W, Stark R et al 2001 Chem. Phys. 271 201
2008, Vol. 25 
