Passively mode-locked lasers with 17.2-GHz fundamental-mode repetition rate pulsed by carbon nanotubes |
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Authors: | Song Yong-Won Yamashita Shinji Goh Chee S Set Sze Y |
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Institution: | Department of Electronic Engineering, University of Tokyo, Tokyo, Japan. ywsong@sagnac.t.u-tokyo.ac.jp |
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Abstract: | 17.2 GHz, the highest fundamental-mode repetition rate to our knowledge, of a carbon nanotube-based passively mode-locked laser is realized at 1570 nm by employing purified single-walled carbon nanotubes as saturable absorbers. The ultrashort linear laser cavity configured with a approximately 9 mm length is designed and demonstrated with our extremely miniaturized nanotube mode locker and a mirror-coated semiconductor optical amplifier as gain medium. The demonstrated pulsed laser has the inferred temporal pulse width of 14 ps and a 3 dB spectral bandwidth of 0.73 nm. |
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