Fiber optic high-quality Nd: YAG beam delivery for materials processing

Duncan P. Hand, Daoning Su, Mohammed Naeem, J. D C Jones

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Optical fibers of 50-µm core diameter are investigated for high-quality beam delivery of moderate power (30 W cw) Nd:YAG laser light. The fiber output near-field profile is important for materials processing applications, but is dependent on the modal distribution within the fiber, together with any intermodal interference. Launch optics design, mode-coupling, and modulation techniques are investigated as methods of controlling this beam profile, together with any associated beam quality (M2) changes. As an example application, high-precision, small kerfwidth cutting of stainless steel is demonstrated. ©1996 Society of Photo-Optical Instrumentation Engineers.

Original languageEnglish
Pages (from-to)502-506
Number of pages5
JournalOptical Engineering
Issue number2
Publication statusPublished - Feb 1996


  • Beam delivery
  • Nd:YAG laser cutting
  • Optical fibers


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