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Proceedings Paper

Broadband near-infrared emission properties for Bi-doped silicate glasses as new laser and optical amplification media
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Paper Abstract

A broad near-infrared emission of Bi-doped lithium alumino silicate glasses has been investigated. It was found that the peak wavelength and width of the emission from the glasses could be controlled drastically by the excitation wavelength. The emission spectrum had the broadest full width of half maximum (FWHM) of more than 500 nm under the 900 nm excitation. The emission consisted of two Gaussian peaks and the stimulated emission cross sections at the peaks were calculated as 7.3×10-21 and 2.3×10-20 cm2. The lifetime was almost independent of temperature up to 350 K, indicating that the emission from the Bi-doped lithium alumino silicate glass has strong resistance to the thermal quenching. It was found that the peak wavelength and the width of the emission from the glasses depend on both the excitation wavelength and the Bi content for the first time. The emission covered a spectral range from 920 to wavelengths over 2000 nm. The bandwidth exceeded 1000 nm. The quantum efficiency of the emission was obtained as 11% when the glass was excited at 974 nm.

Paper Details

Date Published: 2 October 2006
PDF: 9 pages
Proc. SPIE 6389, Active and Passive Optical Components for Communications VI, 638915 (2 October 2006); doi: 10.1117/12.686814
Show Author Affiliations
Yasutake Ohishi, Toyota Technological Institute (Japan)
Takenobu Suzuki, Toyota Technological Institute (Japan)


Published in SPIE Proceedings Vol. 6389:
Active and Passive Optical Components for Communications VI
Achyut K. Dutta; Yasutake Ohishi; Niloy K. Dutta; Jesper Moerk, Editor(s)

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