Quantitative measurement of the phase locking of highly repetitive ultrashort optical pulses generated by a multifrequency continuous-wave Raman laser
被引:3
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作者:
Zaitsu, Shin-ichi
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Kyushu Univ, Grad Sch Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan
Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, JapanKyushu Univ, Grad Sch Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan
Zaitsu, Shin-ichi
[1
,2
]
Imasaka, Totaro
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Kyushu Univ, Grad Sch Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan
Kyushu Univ, Ctr Future Chem, Div Translat Res, Nishi Ku, Fukuoka 8190395, JapanKyushu Univ, Grad Sch Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan
Imasaka, Totaro
[1
,3
]
机构:
[1] Kyushu Univ, Grad Sch Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan
[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan
[3] Kyushu Univ, Ctr Future Chem, Div Translat Res, Nishi Ku, Fukuoka 8190395, Japan
We proposed and demonstrated a novel method for the evaluation of optical pulse trains generated by a multifrequency continuous-wave Raman laser operating at a mode separation of 17.6 THz. This approach is based on the detection of a nonlinear signal arising from the intensity modulation of a pulse train, which should provide a useful means for measuring the deviation from phase locking of multifrequency lasers. Our results suggest that an optimization of intracavity dispersion allows the generation of phase-locked multifrequency emissions, which leads to optical pulse trains at a repetition rate in excess of 10 THz. (C) 2010 Optical Society of America