Limits of Femtosecond Fiber Amplification by Parabolic Pre-Shaping.
We explore parabolic pre-shaping as a means of generating and amplifying ultrashort pulses. We develop a theoretical framework for modeling the technique and use its conclusions to design a femtosecond fiber amplifier. Starting from 9 ps pulses, we obtain 4.3μJ, nearly transform-limited pulses 275 fs in duration, simultaneously achieving over 40 dB gain and 33-fold compression. Finally, we show that this amplification scheme is limited by Raman scattering, and outline a method by which the pulse duration and energy may be further improved and tailored for a given application.
School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA.
Walter
W
Fu
School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA.
Yuxing
Y
Tang
nLIGHT Corporation, 5408 NE 88th Street, Bldg. E, Vancouver, Washington 98665, USA.
Timothy S
TS
McComb
nLIGHT Corporation, 5408 NE 88th Street, Bldg. E, Vancouver, Washington 98665, USA.
Tyson L
TL
Lowder
School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA.
Frank W
FW
Wise