Comparison of 1.48-um and 980-nm pumping for Er-doped superfluorescent fiber sources

Paul F. Wysocki; Robert F. Kalman; Michel J. F. Digonnet; Byoung Yoon Kim

doi:10.1117/12.134970

1 February 1992 Comparison of 1.48-um and 980-nm pumping for Er-doped superfluorescent fiber sources

Paul F. Wysocki, Robert F. Kalman, Michel J. F. Digonnet, Byoung Yoon Kim

Proceedings Volume 1581, Fiber Laser Sources and Amplifiers III; (1992) https://doi.org/10.1117/12.134970
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

The characteristics of Er-doped superfluorescent fiber sources are simulated for pump wavelengths in the 980 nm and 1.48 ?m pump absorption bands. Because absorption near 980 nm occurs to a short-lived pump state, while absorption near 1.48 ?m occurs to the long-lived upper-laser state, sources pumped in these wavelength regions have different characteristics. Both pump bands are found to have optimal pump wavelengths for stability and power (976 nm and 1.475 ?m). While both pump bands are efficient, the 1.48 ?m pump band has a lower threshold pump power level and a higher slope efficiency. On the other hand, the 980 nm pump band produces broader spectra and permits the use of shorter fiber lengths. These and other source characteristics are discussed in detail.

Citation Download Citation

Paul F. Wysocki, Robert F. Kalman, Michel J. F. Digonnet, and Byoung Yoon Kim "Comparison of 1.48-um and 980-nm pumping for Er-doped superfluorescent fiber sources", Proc. SPIE 1581, Fiber Laser Sources and Amplifiers III, (1 February 1992); https://doi.org/10.1117/12.134970

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