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

Yasutake Ohishi; Takenobu Suzuki

doi:10.1117/12.686814

2 October 2006 Broadband near-infrared emission properties for Bi-doped silicate glasses as new laser and optical amplification media

Yasutake Ohishi, Takenobu Suzuki

Author Affiliations +

Proceedings Volume 6389, Active and Passive Optical Components for Communications VI; 638915 (2006) https://doi.org/10.1117/12.686814
Event: Optics East 2006, 2006, Boston, Massachusetts, United States

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.

Citation Download Citation

Yasutake Ohishi and Takenobu Suzuki "Broadband near-infrared emission properties for Bi-doped silicate glasses as new laser and optical amplification media", Proc. SPIE 6389, Active and Passive Optical Components for Communications VI, 638915 (2 October 2006); https://doi.org/10.1117/12.686814

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