In:
Optics Letters, Optica Publishing Group, Vol. 47, No. 8 ( 2022-04-15), p. 2121-
Abstract:
For the first time, to the best of our knowledge, the use of
Nd 3+ codoping for enhancing the ∼ 4.0 μ m emission from the
Ho 3+ : 5 I 5 → 5 I 6 transition was investigated in a Ho 3+ ,
Nd 3+ -codoped Gd 0.1 Y 0.9 AlO 3 [(Y,Gd)AlO 3 ] crystal [Ho/Nd:(Y,Gd)AlO 3 ]. In this study, the ∼ 4.0 μ m emission characteristics and energy
transfer were investigated in detail, and it was found that the codoped Nd 3+ ions in the Ho/Nd:(Y,Gd)AlO 3 crystal significantly enhanced the Ho 3+ : ∼ 4.0 μ m emission, depopulated the lower
laser level of Ho 3+ : 5 I 6 , and had
little effect on the higher laser level of Ho 3+ : 5 I 5 . It was also found that the
energy transfer efficiency from Nd 3+ : 4 F 3/2 to
Ho 3+ : 5 I 5 was as high as 43.0%,
indicating that Nd 3+ ions can be used as an effective
sensitizer for Ho 3+ ions and that
Ho/Nd:(Y,Gd)AlO 3 crystal has the potential to be pumped by
a commercialized InGaAs laser diode (LD). These results suggest that Ho/Nd:(Y,Gd)AlO 3 crystals are likely to become attractive
hosts for developing solid-state lasers at around 4.0 μ m under a conventional 808 nm LD
pump.
Type of Medium:
Online Resource
ISSN:
0146-9592
,
1539-4794
Language:
English
Publisher:
Optica Publishing Group
Publication Date:
2022
detail.hit.zdb_id:
243290-0
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