All-in-One Fiber Laser Based on a Liquid Crystal Transducer
| Autor: | Xinyue Lei, Christoph Wieschendorf, Alexander Fuerbach, Josiah Firth, Leonardo Silvestri, François Ladouceur |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry 02 engineering and technology Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics Amplitude modulation 020210 optoelectronics & photonics Optics Transducer Modulation Liquid crystal law Fiber laser 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Frequency modulation Energy (signal processing) |
| Zdroj: | IEEE Photonics Technology Letters. 31:1409-1412 |
| ISSN: | 1941-0174 1041-1135 |
| Popis: | We report a new method of generating continuous-wave (cw) radiation, Q-Switched as well as mode-locked laser pulses from a single linear fiber laser cavity. The three operating modes can be selected by the electric signal that is applied to an intracavity liquid crystal (LC) transducer cell. In addition, this is the first demonstration of using an LC modulator as an active mode-locking device in a fiber laser oscillator to date. In the proof-of-principle experiments presented here, the Q-Switched laser pulses with a duration of 1.3 $ {\mu }\text{s}$ , a maximum energy of 2.7 $ {\mu }\text{J}$ , and a peak power of 1.93 W were generated at low repetition rates ranging from 0.2 to 6 kHz. In mode-locked operation, pulse trains with repetition rates as high as 944.5 kHz and a shorter duration of 65 ns were achieved. Finally, a slight modification of the LC cell allows for a direct comparison between amplitude modulation (AM) and frequency modulation (FM) mode-locking. |
| Databáze: | OpenAIRE |
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