TY - JOUR
T1 - Laser properties of pyrromethene dyes in sol-gel glasses
AU - Yariv, E.
AU - Reisfeld, R.
PY - 1999/10
Y1 - 1999/10
N2 - Solid-state dye lasers were made by incorporating pyrromethene dyes in organically modified silicate (ormosil) and composite glass matrices. Three different types of pyrromethene (PM) were used: PM 567, PM 580 and PM 597. The ormosil glass samples were prepared by a one-step process at room temperature sol-gel technology which led to the formation of hybrid organic/inorganic materials. The composite glass samples are made by a biphase process: (a) preparation of porous silica gel, (b) impregnation of the dye dissolved in methylmethacrylate (MMA) into the silica gel. A number of various glass compositions were tested and their efficiencies and half output energy lifetimes were measured. The optimal slope efficiency for the lasers pumped transversally, by frequency doubled Nd-Yag laser, approaches 42%. Fluorescence lifetimes, excitation and emission spectra were also measured. In addition, significant dependency of these dyes on pH was found. These dyes lose their lasing ability in acidic (pH < 3) surroundings. This must be considered in the sample preparation.
AB - Solid-state dye lasers were made by incorporating pyrromethene dyes in organically modified silicate (ormosil) and composite glass matrices. Three different types of pyrromethene (PM) were used: PM 567, PM 580 and PM 597. The ormosil glass samples were prepared by a one-step process at room temperature sol-gel technology which led to the formation of hybrid organic/inorganic materials. The composite glass samples are made by a biphase process: (a) preparation of porous silica gel, (b) impregnation of the dye dissolved in methylmethacrylate (MMA) into the silica gel. A number of various glass compositions were tested and their efficiencies and half output energy lifetimes were measured. The optimal slope efficiency for the lasers pumped transversally, by frequency doubled Nd-Yag laser, approaches 42%. Fluorescence lifetimes, excitation and emission spectra were also measured. In addition, significant dependency of these dyes on pH was found. These dyes lose their lasing ability in acidic (pH < 3) surroundings. This must be considered in the sample preparation.
UR - http://www.scopus.com/inward/record.url?scp=0033208117&partnerID=8YFLogxK
U2 - 10.1016/S0925-3467(99)00010-5
DO - 10.1016/S0925-3467(99)00010-5
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AN - SCOPUS:0033208117
SN - 0925-3467
VL - 13
SP - 49
EP - 54
JO - Optical Materials
JF - Optical Materials
IS - 1
T2 - Proceedings of the 1997 1st Spanish-Israeli Workshop on Solid State Lasers
Y2 - 14 December 1997 through 16 December 1997
ER -