Fabrication of copper oxide–coated hollow waveguides for CO2 laser radiation

Yuji Matsuura, Daisuke Miura, Mitsunobu Miyagi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Hollow fibers for transmitting CO2 laser light were fabricated by the chemical vapor deposition (CVD) method. A dielectric film of copper oxide (Cu2O) was deposited upon the inside of a Ag-coated glass capillary by use of a metal acetylacetonate as the precursor. The waveguide, which was coated with Cu2O and had a bore diameter of 700 mm, showed a loss of 0.9 dB/m for CO2 laser light. The Cu2O film deposited by CVD had high chemical and heat resistivity. Therefore a hollow fiber coated with copper oxide is suitable for high-power laser applications in a severe environment.

Original languageEnglish
Pages (from-to)1700-1703
Number of pages4
JournalApplied Optics
Issue number9
Publication statusPublished - 1999 Mar 20


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