Previously reported progress in 3 micron dysprosium doped ZBLAN fiber lasers achieved record conversion efficiency but was limited in tuneability due to the inband nature of the pumping scheme. Near infrared pumping has also been demonstrated but was limited in conversion efficiency due both to pump excited state absorption and large quantum defect. We address these limitations by employing a Raman fiber laser operating at 1700 nm as a pump source. Reduced quantum defect shows promise for efficiency gains while maintaining near infrared pumping and the increased gain bandwidth shows promise for pulsed operation.
Matthew R. Majewski, Robert I. Woodward, and Stuart D. Jackson, "Near infrared pumped full gain bandwidth tunable 3 micron dysprosium fiber laser," Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105120U (Presented at SPIE LASE: January 30, 2018; Published: 26 February 2018); https://doi.org/10.1117/12.2289382.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the proceedings. They include the speaker's narration with video of the slides and animations. Most include full-text papers. Interactive, searchable transcripts and closed captioning are now available for 2018 presentations, with transcripts for prior recordings added daily.
Search our growing collection of more than 16,000 conference presentations, including many plenaries and keynotes.