In:
Optics Letters, Optica Publishing Group, Vol. 45, No. 14 ( 2020-07-15), p. 4060-
Abstract:
Surface channel waveguides (WGs) based on a half-ring (40–60-µm-diameter) depressed-index cladding (type III) geometry are fabricated in monoclinic Tm 3 + : MgWO 4 by femtosecond (fs) laser writing at a repetition rate of 1 kHz. The WGs are characterized by confocal laser microscopy and μ -Raman spectroscopy. A Tm 3 + : MgWO 4 WG laser generates 320 mW at ∼ 2.02 µ m with a slope efficiency of 64.4%. The WG emits a transverse single-mode and linear polarization ( E | | N m ). A remarkable low loss of 〈 0.1 dB / cm is measured for the WG. Vibronic laser emission at ∼ 2.08 µ m is also achieved.
Type of Medium:
Online Resource
ISSN:
0146-9592
,
1539-4794
Language:
English
Publisher:
Optica Publishing Group
Publication Date:
2020
detail.hit.zdb_id:
243290-0
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