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Performance of large-area few-layer graphene saturable absorber in femtosecond bulk laser
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10.1063/1.3672213
/content/aip/journal/apl/99/26/10.1063/1.3672213
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/26/10.1063/1.3672213
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Illustration of the two-component ultrafast dynamics after photon-excitation in graphene. (b) UV-Vis-NIR absorption spectrum for stable graphene dispersion. Inset: photograph of the measured graphene dispersion. (c) Raman spectra at room temperature taken by focusing the 532 nm laser on the graphene films of the SAM.

Image of FIG. 2.
FIG. 2.

(Color online) Configuration of the graphene mode-locked laser. M1: dichroic mirror coated for high transmission (HT) at the pump wavelength and high reflection (HR) in 1010–1070 nm region. M2, M3: HR concave mirrors. GTI1, GTI2: HR Gires-Tournois interferometer mirrors with dispersion of −1300 and −600 fs2 per reflection, respectively.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Average output power as a function of absorbed pump power. Three different operation regimes, i.e., QML under low pump power, CWML, and QML under high pump power, are indicated with dashed lines, respectively. Insert (b), (c), and (d) are the transverse beam profiles recorded in the three distinctive regimes.

Image of FIG. 4.
FIG. 4.

(Color online) (a) Pulse trains in 20 ns and 50 μs per division (div) time scales. (b) Normalized autocorrelation trace for 428 fs duration. Inset: the corresponding spectrum centered at 1031.1 nm.

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/content/aip/journal/apl/99/26/10.1063/1.3672213
2011-12-29
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Performance of large-area few-layer graphene saturable absorber in femtosecond bulk laser
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/26/10.1063/1.3672213
10.1063/1.3672213
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