1700 nm and 1800 nm band tunable thulium doped mode-locked fiber lasers
| Autor: | Hairul Azhar Abdul Rashid, Siamak Dawazdah Emami, Hui Jing Lee, Mahdi Mozdoor Dashtabi, Atoosa Sadat Arabanian |
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| Rok vydání: | 2017 |
| Předmět: |
Amplified spontaneous emission
Materials science lcsh:Medicine chemistry.chemical_element Physics::Optics 02 engineering and technology Article law.invention 020210 optoelectronics & photonics law Fiber laser 0202 electrical engineering electronic engineering information engineering lcsh:Science Multidisciplinary business.industry lcsh:R Laser Thulium chemistry Optical cavity Optoelectronics lcsh:Q business Lasing threshold Tunable laser Photonic-crystal fiber |
| Zdroj: | Scientific Reports Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017) |
| ISSN: | 2045-2322 |
| Popis: | This paper presents short wavelength operation of tunable thulium-doped mode-locked lasers with sweep ranges of 1702 to 1764 nm and 1788 to 1831 nm. This operation is realized by a combination of the partial amplified spontaneous emission suppression method, the bidirectional pumping mechanism and the nonlinear polarization rotation (NPR) technique. Lasing at emission bands lower than the 1800 nm wavelength in thulium-doped fiber lasers is achieved using mode confinement loss in a specially designed photonic crystal fiber (PCF). The enlargement of the first outer ring air holes around the core region of the PCF attenuates emissions above the cut-off wavelength and dominates the active region. This amplified spontaneous emission (ASE) suppression using our presented PCF is applied to a mode-locked laser cavity and is demonstrated to be a simple and compact solution to widely tunable all-fiber lasers. |
| Databáze: | OpenAIRE |
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