期刊
OPTICS LETTERS
卷 45, 期 14, 页码 4060-4063出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.395811
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资金
- Ministerio de Economia y Competitividad [FIS2017-87970-R, MAT2016-75716-C2-1-R]
- Agencia de Gestio d'Ajuts Universitaris i de Recerca [2017SGR755]
- Consejeria de Educacion, Junta de Castilla y Leon [SA287P18]
- National Natural Science Foundation of China [51761135115, 61575199, 61850410533, 61875199, 61975208]
- Ministry of Science and Higher Education of the Russian Federation [Goszadanie 2019-1080]
- Deutsche Forschungsgemeinschaft [PE 607/14-1]
Surface channel waveguides (WGs) based on a half-ring (40-60-mu m-diameter) depressed-index cladding (type HI) geometry are fabricated in monoclinic Tm3+:MgWO4 by femtosecond (fs) laser writing at a repetition rate of 1 kHz. The WGs are characterized by con focal laser microscopy and mu-Raman spectroscopy. A Tm3+:MgWO4 WG laser generates 320 mW at similar to 2.02 mu m with a slope efficiency of 64.4%. The WG emits a transverse single-mode and linear polarization (E parallel to N-m). A remarkable low loss of < 0.1 dB/cm is measured for the WG. Vibronic laser emission at similar to 2.08 mu m is also achieved. (C) 2020 Optical Society of America
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