Abstract
Passive mode-locking of laser by utilizing a suitable saturable absorber is a well-known technique for ultrafast pulse generation. Semiconductor-based saturable absorbers such as SESAMs have revolutionized femtosecond laser technology, providing a robust and ultrafast nonlinear optical switching mechanism which enabled practical applications for ultrafast lasers [1]. SESAMs, however, provide a spectrally limited nonlinearity and often require sophisticated manufacturing technology with additional post-treatments to reduce response time for femtosecond operation [2].
© 2013 IEEE
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