14 March 2015 Q-switched fiber laser based on carbon nano wall saturable absorber
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We report a saturated absorption characteristic of carbon nanowall and Q-switched laser operation using carbon nanowall saturable absorber. Carbon nanowall is vertically aligned nanographite sheets on Si substrate synthesized by plasma-enhanced chemical vapor deposition method. A polyimide thin film, with incorporated carbon nanowall, coated by spin-coating method, is used as saturable absorber. Linear absorption spectrum of carbon nano-walls was observed without absorption peak wavelength range from 1000 to 2000nm. Modulation depth of carbon nanowall saturable absorber was measured with wavelength of about 1560nm. Q-switch laser operation with carbon nanowall saturable absorber and erbium doped optical fiber was demonstrated.
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Soichiro Omi, Soichiro Omi, Norihito Kawaguchi, Norihito Kawaguchi, Yuji Oki, Yuji Oki, "Q-switched fiber laser based on carbon nano wall saturable absorber", Proc. SPIE 9361, Ultrafast Phenomena and Nanophotonics XIX, 936104 (14 March 2015); doi: 10.1117/12.2076848; https://doi.org/10.1117/12.2076848


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