Yb/Er phosphate optical glasses and fibers for eye-safe compact optical amplifiers in LIDARs (Conference Presentation)

Optical Components and Materials XVI ◽

10.1117/12.2509892 ◽

2019 ◽

Author(s):

Nadia G. Boetti ◽

Diego Pugliese ◽

Duccio Gallichi Nottiani ◽

Davide Janner ◽

Federico Leone ◽

...

Keyword(s):

Optical Amplifiers ◽

Optical Glasses

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.3078 ◽

2011 ◽

Vol 239-242 ◽

pp. 3078-3081

Author(s):

Quan Shen ◽

Li Fan Shen ◽

Hai Lin ◽

Chang Min Li

Keyword(s):

Diode Laser ◽

Cross Sections ◽

Optical Amplifiers ◽

Phonon Energy ◽

Band Edge ◽

Tellurite Glasses ◽

Promising Candidate ◽

Maximum Gain ◽

Optical Glasses ◽

Peak Emission

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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