Solid-state Er:Yb:glass laser mode-locked by using single-wall carbon nanotube thin film |
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Authors: | Fong Kok Hann Kikuchi Kazuro Goh Chee S Set Sze Y Grange Rachel Haiml Markus Schlatter Adrian Keller Ursula |
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Institution: | Research Center for Advanced Science and Technology, University of Tokyo, Tokyo, Japan. |
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Abstract: | We design single-wall carbon nanotube (SWNT) thin-film saturable absorbers (SAs) integrated onto semiconductor distributed Bragg reflectors for mode-locking solid-state Er:Yb:glass lasers. We characterize the low nonsaturable loss, high-damage-threshold SWNT SAs and verify their operation up to a pulse fluence of 2 mJ/cm(2). We demonstrate passive fundamental continuous-wave mode locking with and without group-delay dispersion compensation. Without compensation the laser produces chirped 1.8 ps pulses with a spectral width of 3.8 nm. With compensation, we obtain 261 fs Fourier-transform-limited pulses with a spectral width of 9.6 nm. |
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