What would be the pulse compression limit for initial pulses from fibre laser with average power 4mw, 4.5ps duration and 0.4nm fwhm bandwidth.After amplification to 450mw and propagating through a length of SMF (different lengths can be chosen 5m,10m etc..and hence different amount of spectral broadening) , I want to understand on choosing optimal length of SMF to achieve maximum pulse compression (pulse compression limit using spectral broadening in SMF). How would the length of SMF affect the subsequent pulse compression stage?
Thanks in advance!
The famous equation is: \tau_compressed [ps] = 0.05 \sqrt( \tau_in[ps] )
Dianov et al. Efficient compression of high-energy pulses, IEEE J. Quantum Electron. 25, 828 (1989).
Another good reference is: W. J. Tomlinson and W. H. Knox, Limits of fiber-grating
optical pulse compression, J. Opt. Soc. Am. B 4, 1404 (1987).
So you can expect best compression to about 100 fs, and this may already prove to be quite a challenge.
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