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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 8 — Apr. 12, 2010
  • pp: 7724–7731

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

Kiseok Suh, Minkyung Lee, Jee Soo Chang, Hansuek Lee, Namkyoo Park, Gun Yong Sung, and Jung H. Shin  »View Author Affiliations


Optics Express, Vol. 18, Issue 8, pp. 7724-7731 (2010)
http://dx.doi.org/10.1364/OE.18.007724


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Abstract

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 × 10−20 cm2 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 × 1020 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) × 10−17 cm3/sec.

© 2010 OSA

OCIS Codes
(160.5690) Materials : Rare-earth-doped materials
(230.4480) Optical devices : Optical amplifiers

ToC Category:
Optical Devices

History
Original Manuscript: February 8, 2010
Revised Manuscript: March 15, 2010
Manuscript Accepted: March 26, 2010
Published: March 30, 2010

Citation
Kiseok Suh, Minkyung Lee, Jee Soo Chang, Hansuek Lee, Namkyoo Park, Gun Yong Sung, and Jung H. Shin, "Cooperative upconversion and optical gain in ion-beam sputter-deposited ErxY2-xSiO5 waveguides," Opt. Express 18, 7724-7731 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-8-7724


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