Small-bore hollow waveguides for delivery of 3-μm laser radiation

Rebecca L. Kozodoy, Antonio T. Pagkalinawan, James A. Harringtonng

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Flexible hollow glass waveguides with bore diameters as small as 250 μm have been developed for 3-μm laser delivery. All the guides exhibit straight losses between 0.10 and 1.73 dB@m, and the loss increases to between 2.4 and 5.1 dB@m upon bending 1 m of the guides into 15-cm-diameter coils. This behavior is shown to depend strongly on the launch conditions and mode quality of the input beam. The waveguides are capable of efficiently delivering up to 8 W of Er:YAG laser power with proper input coupling, and they are suitable for use in both medical and industrial applications.

Original languageEnglish (US)
Pages (from-to)1077-1082
Number of pages6
JournalApplied Optics
Issue number7
StatePublished - Mar 1 1996

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


  • Erbium YAG
  • Erbium-YSGG
  • Fiber optics
  • Hollow waveguides
  • Infrared waveguides
  • Power delivery


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