Conference paper
Narrow-linewidth all-solid large-mode-area photonic crystal fiber amplifier
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.
| Language: | English |
|---|---|
| Publisher: | SPIE - International Society for Optical Engineering |
| Year: | 2019 |
| Pages: | 1089728-1089728-5 |
| Proceedings: | SPIE Photonics West 2019 |
| Series: | Proceedings of Spie - the International Society for Optical Engineering |
| ISBN: | 1510624368 , 1510624376 , 9781510624368 and 9781510624375 |
| ISSN: | 1996756x and 0277786x |
| Types: | Conference paper |
| DOI: | 10.1117/12.2506246 |
| ORCIDs: | Hauge, Jakob Milo and Lægsgaard, Jesper |
