Q-Switched Tm-doped fiber ring laser using Mo0.8W0.2S2 saturable absorber

Quan Hu; Junli Wang; Lei Chen; Haiting Yan; Lingjie Meng; Zhiyi Wei

doi:10.1117/12.2505313

15 November 2018 Q-Switched Tm-doped fiber ring laser using Mo_0.8W_0.2S₂ saturable absorber

Quan Hu, Junli Wang, Lei Chen, Haiting Yan, Lingjie Meng, Zhiyi Wei

Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109641I (2018) https://doi.org/10.1117/12.2505313
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China

Abstract

Mixed molybdenum tungsten disulphide (Mo_xW_1-xS₂), a new member of the transition metal dichalcogenides, has drawn much research attention in the photonic devices. In this work, we demonstrate a Q-switched Tm-doped fiber laser (TDF) using Mo_0.8W_0.2S₂ polymer film as a saturable absorber (SA). Mo_0.8W_0.2S₂ is obtained by microwave-assisted solvothermal method and its nanosheets are embedded into a polyvinyl alcohol (PVA) film. The film SA is sandwiched between two fiber connectors and is inserted into the all-fiber TDF laser cavity. The total cavity length of TDF is 30m and a 4 m Tmdoped fiber is used as the gain medium. The TDF is pumped by a multimode 793nm laser diode (LD). Use the polarization controller (PC) to change the polarization states, a relatively stable Q-switched pulse train are realized when the pump power up to 2.17 W. The output power of the oscillator increase from 4.4 mW to 7.3 mW with the pulse repetition rate from 11.9 kHz to 15.7 kHz. In addition, the shortest pulse duration of 11.7 μs generated with the pump power of 2.26W.

Citation Download Citation

Quan Hu, Junli Wang, Lei Chen, Haiting Yan, Lingjie Meng, and Zhiyi Wei "Q-Switched Tm-doped fiber ring laser using Mo_0.8W_0.2S₂ saturable absorber", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109641I (15 November 2018); https://doi.org/10.1117/12.2505313

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KEYWORDS

Molybdenum

Fiber lasers

Q switched lasers

Q switching

Transition metals

Optoelectronics

Polarization

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