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Tm3+-doped Bismuth Tellurite Glasses for S- and U-band Optical Amplifiers

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Abstract:

Effective ~1.47mm and powerful ~1.8mm infrared emissions have been observed in Tm3+-doped bismuth tellurite glasses with low phonon energy under the excitation of 793nm diode laser. Judd-Ofelt parameters W2 (4.65´10-20cm2), W4 (1.15´10-20cm2), and W6 (1.16´10-20cm2) indicate a higher asymmetric and stronger covalent environment in the optical glasses. In 0.5wt% Tm3+-doped sample, the peak emission cross-sections of 3H4®3F4 and 3F4®3H6 transitions are derived to be 2.83´10-21 and 6.13´10-21cm2, respectively, and the maximum gain coefficients of 0.38 and 2.21dB/cm at 1.675 (U-band edge) and 1.856mm wavelengths were anticipated in an ideal status. These results indicate the Tm3+-doped bismuth tellurite glasses are a promising candidate in developing S- and U-band amplifiers.

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Advanced Materials, CEAM 2011 View Preview

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Periodical:

Advanced Materials Research (Volumes 239-242)

Pages:

3078-3081

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.239-242.3078

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Online since:

May 2011

Authors:

Quan Shen, Li Fan Shen, Hai Lin, Chang Min Li

Keywords:

Infrared Emission, Optical Gain, S-Band, Tm3+-Doped Tellurite Glasses, U-Band

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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