Passively <i>Q</i>-switched erbium doped fiber laser using a gold nanostars based saturable absorber

Zhe Kang; Mingyi Liu; Zhenwei Li; Siqing Li; Zhixu Jia; Chengzhi Liu; Weiping Qin; Guanshi Qin

doi:doi:10.1364/PRJ.6.000549

Photonics Research, 2018, 6 (6): 06000549, Published Online: Jul. 2, 2018

Passively Q-switched erbium doped fiber laser using a gold nanostars based saturable absorber

Zhe Kang ^1,2Mingyi Liu ²Zhenwei Li ¹Siqing Li ²Zhixu Jia ²Chengzhi Liu ¹Weiping Qin ²Guanshi Qin ^2,*

Author Affiliations

¹ Changchun Observatory, NAO, Chinese Academy of Sciences, Changchun 130012, China

² State Key Laboratory on Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, Changchun 130012, China

Figures & Tables

Fig. 1. Characterization of the GNSs and GNS film. (a) TEM image of GNSs at scale of 100 nm; inset: photographs of GNS aqueous solution and the TEM image of GNSs at a scale of 20 nm. (b) SEM image of GNS film at scale of 500 nm; inset: the photograph of GNS film.

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Fig. 2. Absorption spectra of GNS solution (red line) and GNS film (black line).

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Fig. 3. Setup of measurement of saturable absorption by balanced twin detector measurement technology.

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Fig. 4. Dependence of the transmittance of the GNS film on the incident pump peak power density.

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Fig. 5. Schematic of the experimental setup for the GNS based passively Q-switched EDFL. Laser diode (LD), wavelength division multiplexer (WDM), Er3+ doped fiber (EDF), isolator (ISO), output coupler (OC), optical spectrum analyser (OSA). Inset: TEM image of GNS.

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Fig. 6. Q-switched pulse output characterization in the EDF laser cavity with a GNS SA. (a) Optical spectra of CW laser and Q-switched pulsed laser. (b) Pulse train and (c) single pulse characteristics of Q-switched pulsed laser for a pump power of 120 mW. (d) Pulse repetition rate and pulse width versus pump power.

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Fig. 7. Measured emission spectra of the Q-switched laser based on the GNS SA.

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Fig. 8. Relationship between the average output powers and pump powers.

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Zhe Kang, Mingyi Liu, Zhenwei Li, Siqing Li, Zhixu Jia, Chengzhi Liu, Weiping Qin, Guanshi Qin. Passively Q-switched erbium doped fiber laser using a gold nanostars based saturable absorber[J]. Photonics Research, 2018, 6(6): 06000549.

Passively Q-switched erbium doped fiber laser using a gold nanostars based saturable absorber

Fig. 1. Characterization of the GNSs and GNS film. (a) TEM image of GNSs at scale of 100 nm; inset: photographs of GNS aqueous solution and the TEM image of GNSs at a scale of 20 nm. (b) SEM image of GNS film at scale of 500 nm; inset: the photograph of GNS film.

Fig. 2. Absorption spectra of GNS solution (red line) and GNS film (black line).

Fig. 3. Setup of measurement of saturable absorption by balanced twin detector measurement technology.

Fig. 4. Dependence of the transmittance of the GNS film on the incident pump peak power density.

Fig. 5. Schematic of the experimental setup for the GNS based passively Q-switched EDFL. Laser diode (LD), wavelength division multiplexer (WDM), Er3+ doped fiber (EDF), isolator (ISO), output coupler (OC), optical spectrum analyser (OSA). Inset: TEM image of GNS.

Fig. 7. Measured emission spectra of the Q-switched laser based on the GNS SA.

Fig. 8. Relationship between the average output powers and pump powers.

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Passively Q-switched erbium doped fiber laser using a gold nanostars based saturable absorber

Fig. 1. Characterization of the GNSs and GNS film. (a) TEM image of GNSs at scale of 100 nm; inset: photographs of GNS aqueous solution and the TEM image of GNSs at a scale of 20 nm. (b) SEM image of GNS film at scale of 500 nm; inset: the photograph of GNS film.

Fig. 2. Absorption spectra of GNS solution (red line) and GNS film (black line).

Fig. 3. Setup of measurement of saturable absorption by balanced twin detector measurement technology.

Fig. 4. Dependence of the transmittance of the GNS film on the incident pump peak power density.

Fig. 5. Schematic of the experimental setup for the GNS based passively Q-switched EDFL. Laser diode (LD), wavelength division multiplexer (WDM), Er3+ doped fiber (EDF), isolator (ISO), output coupler (OC), optical spectrum analyser (OSA). Inset: TEM image of GNS.

Fig. 7. Measured emission spectra of the Q-switched laser based on the GNS SA.

Fig. 8. Relationship between the average output powers and pump powers.

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