Optical channel waveguides written by high repetition rate femtosecond laser irradiation in Li–Zn fluoroborate glass
Low loss, optical channel waveguides have been successfully produced by high repetition rate femtosecond laser inscription in a Li–Zn fluoroborate glass (64.9B 2 O 3 + 25Li 2 O + 10ZnF 2 + 0.1Er 2 O 3 ). High quality waveguides were produced at 500 kHz, 1 MHz and 2 MHz laser repetition rates, show...
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Published in | Journal of optics (New Delhi) Vol. 47; no. 3; pp. 412 - 415 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
New Delhi
Springer India
01.09.2018
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Low loss, optical channel waveguides have been successfully produced by high repetition rate femtosecond laser inscription in a Li–Zn fluoroborate glass (64.9B
2
O
3
+ 25Li
2
O + 10ZnF
2
+ 0.1Er
2
O
3
). High quality waveguides were produced at 500 kHz, 1 MHz and 2 MHz laser repetition rates, showing a refractive index contrast in the range of 3–6 × 10
−3
depending on laser fluences. Dependence of experimental parameters such as average laser power, pulse repetition rate and writing speed on the properties of fabricated waveguides has been discussed. The comparison of optical and compositional characterization techniques evidences an enrichment of B and Zn in the guiding region, while F migrates to the heat diffused region of the written structure. |
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ISSN: | 0972-8821 0974-6900 |
DOI: | 10.1007/s12596-018-0462-1 |