Long wavelength operation of a dysprosium fiber laser for polymer processing
| Autor: | Matthew R. Majewski, Stuart D. Jackson, Gayathri Bharathan, Alexander Fuerbach |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
business.industry Orders of magnitude (temperature) Slope efficiency Physics::Optics 02 engineering and technology Output coupler 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics law.invention 010309 optics Wavelength Optics Fiber Bragg grating law Optical cavity Fiber laser 0103 physical sciences 0210 nano-technology business |
| Zdroj: | Optics letters. 46(3) |
| ISSN: | 1539-4794 |
| Popis: | We demonstrate operation of a mid-infrared dysprosium-doped fiber laser with emission at 3388 nm, representing the longest wavelength yet achieved from this class of laser, to the best of our knowledge. Oscillation far removed from the D y 3 + gain peak around 3 µm is achieved through the design of a high feedback optical cavity employing a directly inscribed fiber Bragg grating as the output coupler. Laser performance is characterized by a slope efficiency with respect to injected pump power of 38% and maximum output power of 134 mW, an improvement of at least three orders of magnitude over prior attempts at long wavelength D y 3 + fiber laser operation. This wavelength coincides with a maximum in the absorption coefficient of PMMA, which we exploit for preliminary demonstration of the utility of this source in polymer processing. |
| Databáze: | OpenAIRE |
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