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Upconversion and migration in erbium-doped silica waveguides in the continuous-wave excitation switch-off regime
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.
2002 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 65, no 23Article in journal (Refereed) Published
Abstract [en]

Based on an approach for averaging solution of rate equations over possible ensemble configurations, we derive integral equation for population inversion taking into account nonlinear homogeneous upconversion and migration in Er3+-doped silica waveguides for the case of 1480-nm CW excitation switch-off (CWES) regime. Because of pump for CWES is off, only migration tends to refill the holes in excitation distribution caused by upconversion. Thus the upconversion is weaker than that for the CW operation, except for t=0 and t-->infinity, upconversion.

Place, publisher, year, edition, pages
2002. Vol. 65, no 23
Keyword [en]
homogeneous up-conversion, excited-state absorption, 980 nm, glasses, fibers
URN: urn:nbn:se:kth:diva-21702DOI: 10.1103/PhysRevB.65.233104ISI: 000176767900004OAI: diva2:340400
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Jaskorzynska, Bozena
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