Abstract
Synchronous mode locking using phase modulation directly from the pump laser is demonstrated for what is to our knowledge the first time. A synchronously mode-locked erbium/ytterbium fiber laser pumped with a Nd:YAG laser delivers 2.4-ps pulses at a repetition rate of 100 MHz. The emission wavelength is self-adjusting to the cavity length within a locking range of 1 mm. The relative timing jitter is consistently less than 40% of the fiber laser pulse width and less than 1% of the pump pulse width.
© 1993 Optical Society of America
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