Cooperative upconversion and optical gain in ion-beam sputter-deposited ErxY2-xSiO5 waveguides

被引：53

作者：

Suh, Kiseok ^{[1
]}

Lee, Minkyung ^{[1
]}

Chang, Jee Soo ^{[1
]}

Lee, Hansuek ^{[3
]}

Park, Namkyoo ^{[3
]}

Sung, Gun Yong ^{[4
]}

Shin, Jung H. ^{[1
,2
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea

[2] Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol WCU, Taejon 305701, South Korea

[3] Seoul Natl Univ, Sch Elect Engn & Comp Sci, Opt Commun Syst Lab, Seoul 151744, South Korea

[4] ETRI, Biosensor Res Team, Taejon 305700, South Korea

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 08期

关键词：

ERBIUM; SILICATE;

D O I：

10.1364/OE.18.007724

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Single-phase, polycrystalline ErxY2-xSiO5 thin films were deposited by reactive ion-beam sputter deposition and rapid thermal annealing. Due to the crystalline nature, the silicate thin films provide peak Er3+ emission cross-section of 0.9 +/- 0.02 x 10(-20) cm(2) that is higher than that in silica. Optical gain, with near 60% inversion, is achieved via optical pumping of a single-mode, ridge-type waveguide with the silicate core with an Er concentration of 1.7 x 10(20) cm(-3). Analysis of pump-power dependence of the optical gain and spontaneous emission intensity of Er3+ indicate that the gain is limited by cooperative upconversion process, whose coefficient is determined to be (8 +/- 3) x 10(-17) cm(3)/sec. (C) 2010 Optical Society of America

引用

页码：7724 / 7731

页数：8

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