Narrow-linewidth all-solid large-mode-area photonic crystal fiber amplifier

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Large-mode-area (LMA) photonic crystal fiber (PCF) amplifiers are attractive for high-power amplification of single-mode (SM) narrow-linewidth light. Traditionally, LMA PCF designs include air holes but splicing and interfacing of fibers with air holes is complicated. Recently, this was addressed with the development of a LMA PCF amplifier fiber without air holes but with SM operation maintained. This all-solid fiber can be spliced with standard splicers and thus enables integration of PCFs into all-fiber monolithic laser systems. The new fiber, named DC-250/30-PM-Yb-FUD, is demonstrated in a free-space configuration for high-power amplification of 1064 nm light with a narrow linewidth of less than 20 kHz. A seed power of 380 mW is amplified to 40 W, corresponding to a single-stage gain of 20 dB, with an optical to optical efficiency of 69%. No indication of stimulated Brillouin scattering is observed, and the output is stable during frequency modulation of the seed laser.
Original languageEnglish
Title of host publicationProceedings of spie
Number of pages6
Volume10897
PublisherSPIE - International Society for Optical Engineering
Publication date2019
Article number1089728
DOIs
Publication statusPublished - 2019
EventSPIE Lase - The Moscone Center, San Francisco, United States
Duration: 2 Feb 20197 Feb 2019

Conference

ConferenceSPIE Lase
LocationThe Moscone Center
CountryUnited States
CitySan Francisco
Period02/02/201907/02/2019
SeriesProceedings of SPIE, the International Society for Optical Engineering
Volume10897
ISSN0277-786X
CitationsWeb of Science® Times Cited: No match on DOI

    Research areas

  • Photonic crystal fiber, Fiber amplifier, Narrow-linewidth, Large-mode-area, All-solid fiber, High-power

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