Controllable dual-wavelength operation of a femtosecond neodymium fiber laser.
Simultaneous asynchronous mode locking of two wavelengths in a Nd(3+)-doped fiber laser is reported. The laser operates simultaneously at wavelengths of 1.060 and 1.100 microm where carrier-type passive mode locking is employed for the shorter wavelength and Kerr-type passive mode locking is used for the longer wavelength. The difference between the two repetition rates may be varied over a range from several megahertz to 500 Hz, limited by the onset of pulse interactions at small difference frequencies.
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MH
Ober
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Sucha
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ME
Fermann