Investigation on the Stability of WSe<sub>2</sub>-PVA Saturable Absorber in an all PM Q-Switched Fiber Laser
In this paper, we demonstrate an all polarization maintaining (PM) Q-switched erbium-doped fiber laser based on tungsten diselenide-polyvinyl alcohol (<inline-formula><tex-math notation="LaTeX">$\rm{WSe}_{{2}}\rm{-PVA}$</tex-math> </inline-formula>) saturable absorb...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2016-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7567610/ |
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| Summary: | In this paper, we demonstrate an all polarization maintaining (PM) Q-switched erbium-doped fiber laser based on tungsten diselenide-polyvinyl alcohol (<inline-formula><tex-math notation="LaTeX">$\rm{WSe}_{{2}}\rm{-PVA}$</tex-math> </inline-formula>) saturable absorber (SA) and investigated the stability of <inline-formula><tex-math notation="LaTeX"> $\rm{WSe}_{{2}}\rm{-PVA}$</tex-math></inline-formula> SA in the laser. The all PM cavity isolated the environmental perturbation on the cavity birefringence so that the evolution of material properties of <inline-formula> <tex-math notation="LaTeX">$\rm{WSe}_{{2}}\rm{-PVA}$</tex-math></inline-formula> SA during the Q-switched operation can be investigated based on the laser output. It is found that when heat accumulation reached a certain level in <inline-formula><tex-math notation="LaTeX">$\rm{WSe}_{{2}}\rm{-PVA}$</tex-math></inline-formula> SA, PVA in SA would first melt and perturb the transmission of SA; then, WSe<sub>2</sub> in SA would be quickly damaged, resulting in a permanent increase of the SA loss. This work will benefit the research on obtaining a long-term stable all PM Q-switched lasers based on 2-D material saturable absorber. |
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| ISSN: | 1943-0655 |