Enhanced 2.7- and 2.84-µm emissions from diode-pumped Ho³âº/Er³âº-doped fluoride glass.
Opt Lett
; 39(20): 5917-20, 2014 Oct 15.
Article
em En
| MEDLINE
| ID: mdl-25361119
ABSTRACT
This work reports the intense emissions at 2.7 and 2.84 µm in a Ho³âº/Er³âº-codoped fluoride glass (ZrF4-BaF2-YF3-AlF3). An extensive transmission spectrum and the absence of strong OHâ» absorption guarantee the observation of mid-infrared (IR) emissions. For the Ho³âº/Er³âº-codoped sample, the 2.7- and 2.84-µm emissions are 5.8 and 3.8 times higher with larger emission cross-sections (10.2×10⻲¹ and 9.8×10⻲¹ cm²), respectively. Meanwhile, other near to middle infrared emissions (1200, 2045 nm emissions from Ho³âº and 980, and 1535 nm emissions from Er³âº ions) are all enhanced. The collective enhanced effect originates from the disappearance of nonradiative decay processes after codping Er³âº and Ho³âº ions. Hence, the advantageous spectroscopic characteristics of Ho³âº/Er³âº-codoped ZBYA glass indicate that this kind of fluoride glass may be an attractive host to develop solid-state lasers for 3 µm.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Lett
Ano de publicação:
2014
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Article